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For the Inventor, By the Inventor

Gunma, Japan

Hisayuki Nagaoka

This inventor holds 9 USPTO granted patents. Top assignee: Toshiba Silicone Co., Ltd.. Active years: 1989-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisayuki Nagaoka. Retrieved from https://idiyas.com/inventor/hisayuki-nagaoka

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 4

Forward Citations = 56(Granted Patents)


Location History:

  • Gunma, JP (1989 - 1993)
  • Ohta, JP (1994)
  • Tokyo, JP (1995 - 1999)

Company Filing History:

goldMedal9 out of 162 
 
Toshiba Silicone Co., Ltd.
 patents

Years Active: 1989-1999

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9 patents (USPTO):Explore Patents
1. 5883184 - Curable organosiloxane composition (1999-03-16),
2. 5641832 - Room temperature-curable organopolysiloxane composition (1997-06-24),
3. 5378406 - Fungiresistant polyorganosiloxane composition (1995-01-03),
4. 5328966 - Curable resin composition (1994-07-12),
5. 5217651 - Room temperature vulcanizing type electroconductive silicone rubber (1993-06-08),
6. 5015413 - Electrically conductive polyorganosiloxane primer composition (1991-05-14),
7. 5004793 - Room temperature-curable composition (1991-04-02),
8. 4882396 - Siloxane-amide block copolymer and process for producing the same (1989-11-21),
9. 4877855 - Siloxane-amide block copolymer and process for producing the same (1989-10-31),

Title: The Innovations of Hisayuki Nagaoka

Introduction

Hisayuki Nagaoka is a prominent inventor based in Gunma, Japan. He has made significant contributions to the field of organosiloxane compositions, holding a total of nine patents. His work focuses on developing innovative materials that exhibit excellent adhesion properties.

Latest Patents

Nagaoka's latest patents include a curable organosiloxane composition. This composition comprises an organopolysiloxane with aliphatic unsaturated hydrocarbon groups, an organopolyhydrogensiloxane, a platinum-based catalyst, and an oil-absorbing filler. This formulation allows for satisfactory adhesion to substrates without the need for wiping off organic oily contaminants. Another notable patent is a room temperature-curable organopolysiloxane composition. This composition also features an organopolysiloxane, an organosilicon compound with hydrolyzable groups, and an oil-absorbing filler. It similarly provides excellent adhesion in various applications.

Career Highlights

Nagaoka is currently employed at Toshiba Silicone Co., Ltd., where he continues to innovate in the field of silicone materials. His expertise in organopolysiloxane compositions has positioned him as a key figure in the industry.

Collaborations

Throughout his career, Nagaoka has collaborated with notable coworkers such as Michio Zenbayashi and Chiyuki Shimizu. These collaborations have further enhanced his research and development efforts.

Conclusion

Hisayuki Nagaoka's contributions to organosiloxane compositions demonstrate his commitment to innovation and excellence in material science. His patents reflect a deep understanding of chemical properties and practical applications, making him a valuable inventor in his field.

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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