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 Expert  726231

Expert in Polymer Chemistry, Thermoset Polyimides, Epoxies, Cyanate Esters, BMIs, Ultrahigh Temp Polymers

Available for your Consulting and Expert Witness Needs

California (CA)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness Market Research

Summary of Expertise:

Listed with other top experts in: 

He has worked on high-temperature resistant aromatic and heteroaromatic polymers, including thermoset polyimides, BMIs, cyanate esters, and other high-temprature polymers. He has designed a series of high-temperature poly(arylene ethers) for the semiconductor manufacturers to be used as interlayer low-k dielectric materials, and led the product development project from concept design to through R&D and scale-up to commercialization. In addition, he has further built a second-generation dielectric system with stronger inherent mechanical properties and higher Tg based on a combination of perphenylated adamantanes and Diel-Alder chemistry.

aromatic polymer

He began his professional career in the aerospace industry and has comtributed to the development of thermoset polyimides as the resin materials for high temperature carbon fiber reinforced composites. He gained his expertise in solvent and hot-melt prepregging and contributed to improving processibility of thermoset polyimide systems.

composite material

He is expert in physical and chemical characterization of polymers and composite materials, adhesion failures, and prepregging defects. He is expert in interpreting thermal analytical results (DSC, TGA, DMA) and other analytical characterization techniques including NMR, FTIR, MS, GCMS, and HPLC. Although not a trained mechanical engineer, he has many years of working knowledge in thermomechanical testing, ASTM instron testing methods, and failure inspection of composite test specimens.

composite material characterization

During the years with the semiconductor industry, he has developed a second generation high temperature thermoset aromatic system for applications as low-k dielectric interlayer materials based on the chemistry of highly-phenylated adamantanes and Diels Alder reaction of tetracyclone and phenylacetylene. He also worked on the synthesis of highly phenylated terphenyl systems based on Diels-Alder reactions of the appropriate structures.

Diels-Alder reaction

He has more than 2 decades' experience in new product development of high-performance polymers for applications in harsh environmental conditions and high temeprature regimes. Polymer systems included the cyanate esters, bismaleimides, thermoset polyimides, polyarylene ethers, polyphenylenes, and polybenzimidazoles and polybenzoxazoles.

high-performance polymer

His experience with high temperature adhesives was mainly with thermosetting polyimides for aerospace structural applications.

high-temperature adhesive

He has worked on high temperature composites for high speed aircraft applications, and was mainly in thermoset polyimides and their isoimide modifications.

high-temperature composite

His work on polyimides and polyarylene ethers are AB-type homopolymers


He has worked on organic coatings with dielectric properties for the aerospace and semiconductor industries, where the coatings in the latter are thin films. The polymer types are mainly polyimides, epoxies, and poly(arylene ethers). A few of these developmental programs turned into practical systems for coating select classified structures (aerospace industry) and commercializing one of the world's earliest organic low-k dielectric thin films.

organic coating material

Polyamic acid is the more processible form of polyimide. Many solvent prepregs used for fabricating polyimide composites are the polyamic acid intermediates. In addition, he also studied and applied the polyisoimide alternative to circumvent the outgassing problems in processing polyimide through the amic acid stage.

polyamic acid

He has more than 20 years of experience working with the synthesis, characterization, and applications of different types of polymer systems for both the aerospace ans semiconductor industries.


He has over 20 years of expertise in polymer chemistry, including design, synthesis, characterization, and sturcture-property relationship studies.

polymer chemistry

He has extensive experience in polymer modification by monomer substitution, reactions on polymers, curative applications as in the case of epoxy chemistry.

polymer modification chemistry

He has extensive synthetic expertise in polyimides, monomer design, nucleophilic aromatic substitution, Diels-Alder synthesis.

synthetic polymer chemistry

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: San Jose, California;  San Francisco, California;  Sacramento, California;  Oakland, California;  Stockton, California;  Fremont, California;  Modesto, California;  Salinas, California;  Santa Rosa, California;  and Hayward, California.

Year   Degree   Subject   Institution  
1976   Ph D   Organic Chemistry   University of Iowa  

Work History:
Years   Employer   Department   Title   Responsibilities

2008 to






R&D Chemist-Technical Manager


He is responsible for R&D product development and property improvement per customer requests. Concurrently, he serves an as internal consultant to Manufacturing

2001 to





Technology consultant


Expert has served as consultant and has assisted several companies during this performance period on materials and polymer chemistry, surface chemistry, adhesives and coatings, product and process development. He has also involved in technical translation between Chinese and English.

2007 to 2008


YLA, Inc.




R&D Technical Manager


He manages daily lab operations, conducts R&D on product line improvement and new product development, provides technical service to aerospace customers, and directs chemical characterization and analysis.

2002 to 2004


Ciphergen Biosystems, Inc.




Senior Process Chemist


His assignment was process development of next generation protein chip design and development of a modular manufacturing process.

1994 to 2001


AlliedSignal Advanced Microelectronic Materials, Inc.




Senior Chemist and Materials Technology Leader


He directed the R&D development of organic low-k dielectric polymers from conceptualization to commercialization, designed experimentations, and interacted iteratively with Tier 1 semiconductor industry customers during the developmnet cycle.

1987 to 1994


Lockheed Aeronautical Systems & Missiles & Space Companies


Advanced Technology Center


Senior Staff Scientist


He served as polymer chemistry expert in the development of CFR polyimide composites, wrote contract proposals, and directed funded programs in the aerospace materials technology arena.

1979 to 1987


Hughes Aircraft Company


Technology Support Division


Senior staff engineer, group leader


His main responsibilities included new product development in epoxy and polyimide chemistries, technical interface with customers, and proposal preparation to secure contractual funding for the division of Hughes Aircraft Company.

Career Accomplishments:

American Chemical Society


Multiple Patent Awards from Hughes, and AlliedSignal-Honeywell, AlliedSignal; Employee of the Year Award from AlliedSignal

Publications and Patents Summary

Expert has contributed more than 40 professional journal publications in organic chemistry, polymer composites, and semiconductor materials. He also has contributed 4 book chapters on polyimide chemistry, and adhesion science. To date, he is the author of over 65 patents on polymer materials design and processes.

Government Experience:
Years   Agency   Role   Description
1980 to 1994   US Air Force   principal investigator   He was the PI of multiple government contracts for Hughes and Lockheed on polyimide technology and advanced materials for composites
1983 to 1987   ONR   Principal Investigator   He succesfully won and performed on materials programs from ONR on high temp adhesive development during his years with Hughes Aircraft Company from 1978 to 1987.
1980 to 1994   NASA Langley   technical liaison   He served as the technical laison between company (Hughes and Lockheed) and the agency on technical interactions

Consulting Services:
Selected Consulting Examples:
  • He has consulted on-site in the Bay Area for a technology company designing multilayer thin films and served partially also as patent reader and writer
  • He has consulted on-site in Ohio for a materials technology company and performed hands-on lab work in polymer chemistry on chemical synthesis and process development of photoimageable polymers.
  • He has consulted on-site for a start-up company in the Bay Area in epoxy chemistry and process development for microelectronic packaging.
  • He has served as off-site (via emails and telephone) technical consultant for a Bay Area optical equipment R&D company on chemistry-related questions on materials selection and surface chemistry.
  • He has a retained contract with a biopharmaceutical company in the Bay Area, for technical translations between Chinese and English and quality control in translated documents.
Recent Client Requests:
  • Expert for consulting on Epoxy potting comparison / replacement.
  • Polyimide expert for consulting on Polyimide Technology.
  • Expert in B2B chip design for ASIC and FPGA design.
  • Expert in polymer chemistry for consulting on electric motor coil varnish and polyamidimide.
  • Expert in Pre Preg Material Selection.
  • Polyalphaolefins expert for consulting on polyalphaolefins.
  • Expert in Optical Index Matching Fluid for PMMA/Elastomer System.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
Expert has served in a limited capacity as expert witness as a consultant to technical details in patent prosecution
Recent Litigation Client Requests:
  • Expert for consulting on frozen food film packaging malfunction.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
1994 to 2001   Japan   He has worked on-site at customer facilities mainly between Tokyo and Nagoya on scheduled visits and performed technical trouble-shooting.
1994 to 2001   Germany   He conducted technology transfer to an AlliedSignal-Honeywell corporate manufacturing facility in Seelze, Germany, and supported international tradeshows in Munich, Germany, during his time with the semiconductor industry from 1994 to 2001.
2002 to 2002   Taiwan, Republic of China   He was an invited speaker at ITRI, Hsinchu, Taiwan on chemical technologies.
2002 to 2002   Singapore   He was an invited speaker on organic dieletric polymers at IME in Singapore.

Language Skills:
Foreign Language   Description
Chinese   Expert is a native speaker of Chinese and knows the language at the literary level.

Market Research:
Expert has informally gained working knowledge on market trends, emerging technologies, key players, and company atttitudes while serving in technical capacities to assist marketing personnel in customer visits and vendor accessment tours.

Click the green button above to contact Expert for a free initial screening call regarding your marketing research, industry research, and company research needs.  For research needs involving multiple experts or secondary research, a Research Director can be assigned to coordinate the work into a custom report for you as a potentially quicker and more cost effective alternative to doing this work yourself or hiring a boutique consultancy.  Remember, your initial screening call to speak with Expert is free.

Additional Skills and Services:

As part of his professional responsibilities, Expert has given seminars and technical presentation on technical topics, including chemical technologies and dielectric materials processing and characterization.

Supplier and Vendor Location and Selection

Expert has been a technical R&D professional for several companies in different industries. Typically as project leader, he was responsible for interacting with suppliers and materials vendors to establish relevant links of enabling technologies for the company products. He often visited vendors on site to evaluate manufacturing facilities and operational procedures.

Other Skills and Services

In addition to technical consulting as an experienced polymer chemist in epoxy and polyimide chemistries and other high temperature polymers, Expert has also occasionally assisted clients in technical translations from French and German. He has more frequently helped in translations between Chinese and English, in both directions.


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