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For the Inventor, By the Inventor

Kitakyushu, Japan

Katsuhisa Kohyama

This inventor holds 13 USPTO granted patents. Top assignee: Mitsubishi Chemical Industries Limited. Active years: 1980-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhisa Kohyama. Retrieved from https://idiyas.com/inventor/katsuhisa-kohyama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 8

Forward Citations = 107(Granted Patents)


Location History:

  • Kyushu, JP (1985)
  • Kita-Kyushu, JP (1980 - 1987)

Company Filing History:

goldMedal13 out of 614 
 
Mitsubishi Chemical Industries Limited
 patents

Years Active: 1980-1987

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13 patents (USPTO):Explore Patents
1. 4684713 - Hydrocarbon terminated polyamide resin and process for producing the same (1987-08-04),
2. 4664679 - Aqueous dispersion of silicic anhydride and abrasive composition (1987-05-12),
3. 4661555 - Polycarbonate resin composition and process for its production (1987-04-28),
4. 4546172 - Process for producing polycarbonate resin particles (1985-10-08),
5. 4452976 - Process for producing aromatic polyester polycarbonate particles (1984-06-05),
6. 4429103 - Method for preparation of aromatic polyester-polycarbonate (1984-01-31),
7. 4369303 - Process for producing an aromatic polyesterpolycarbonate (1983-01-18),
8. 4323663 - Process for producing a halogen-containing polycarbonate resin (1982-04-06),
9. 4323519 - Method of washing organic solvent solution of polycarbonate (1982-04-06),
10. 4308373 - Halogen-containing polycarbonate resin and process for producing same (1981-12-29),
11. 4260731 - Aromatic polyester-polycarbonate (1981-04-07),
12. 4252939 - Method for manufacture of aromatic polyester-polycarbonate (1981-02-24),
13. 4239882 - Process for producing polyester (1980-12-16),

Title: Innovations of Katsuhisa Kohyama

Introduction

Katsuhisa Kohyama is a prominent inventor based in Kitakyushu, Japan. He has made significant contributions to the field of materials science, particularly in the development of polyamide resins and abrasive compositions. With a total of 13 patents to his name, Kohyama's work has had a notable impact on various industrial applications.

Latest Patents

Kohyama's latest patents include a hydrocarbon terminated polyamide resin and a process for producing the same. This innovation involves a polyamide resin with a relative viscosity ranging from 2.5 to 6, featuring hydrocarbon groups of 6 to 22 carbon atoms as end groups. The number of these hydrocarbon groups constitutes 40 to 100% of the total end groups of the polyamide. Another significant patent is for an aqueous dispersion of silicic anhydride and abrasive composition. This aqueous dispersion comprises an aqueous solvent and silicic anhydride, which has a surfacial silanol group density of 0.3 to 3 per 100 .ANG..sup.2, obtained through surface treatment of silicic anhydride produced by a dry method.

Career Highlights

Katsuhisa Kohyama is currently associated with Mitsubishi Chemical Industries Limited, where he continues to innovate and develop new materials. His work has been instrumental in advancing the capabilities of polyamide resins and their applications in various industries.

Collaborations

Kohyama has collaborated with notable colleagues, including Katsuhiko Nakamura and Katsuyuki Sakata. These partnerships have fostered a collaborative environment that enhances the innovation process.

Conclusion

Katsuhisa Kohyama's contributions to the field of materials science through his patents and collaborations highlight his role as a leading inventor. His work continues to influence the development of advanced materials in the industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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