Hirofumi Kishita

This inventor holds 74 USPTO granted patents and 3 published patent applications and 10 EPO patents, primarily in Fluorinated Polymers (CPC class 528 ). Top assignees: Shin-Etsu Chemical Co., Ltd., Shin-Etsu Chemical Company Co., Ltd.. Active years: 1980-2014.

USPTO Granted Patents = 74 (Patent Applications = 3)

% Patents Active = 86.5

EPO Patents = 10 (Patent Applications = 9)

Average Co-Inventor Count = 3.6

ph-index = 12

Forward Citations = 473(Granted Patents)

Forward Citations (Not Self Cited) = 439(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Gunma, JP (1994)
Usui-gun, JP (1998 - 2003)
Matsuida-machi, JP (1996 - 2004)
Takasaki, JP (2005)
Gunma-ken, JP (1996 - 2012)
Annaka, JP (1980 - 2014)

Company Filing History:

73 out of 5,989

Shin-Etsu Chemical Co., Ltd.

patents

1 out of 1

Shin-Etsu Chemical Company Co., Ltd.

patent

Years Active: 1980-2014

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Areas of Expertise:

Fluorooxyalkylene

Surface Treatment

Perfluoropolyether

Rubber Composition

Fluorinated Organosilicon

Curable Composition

Coating Composition

Anti-Reflection Film

Organopolysiloxane

Fluorinated Amide

Silicone Coating

Fluorocarbon Compounds

74 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8900711 - Fluorooxyalkylene group-containing polymer composition, a surface treatment agent comprising the same and an article treated with the agent (2014-12-02),

2. 8865820 - Fluorine-containing curable composition and rubber article (2014-10-21),

3. 8765870 - Diluent for a flourine-containing silicone coating agent (2014-07-01),

4. 8420763 - Fluorooxyalkylene group-containing polymer composition, a surface treatment agent comprising the same and an article treated with the agent (2013-04-16),

5. 8362186 - Coating composition and a coating therefrom having waterdrop sliding property (2013-01-29),

6. 8283480 - Perfluoropolyether group-containing acrylate compound (2012-10-09),

7. 8263724 - Fluorine-containing surface treating agent and an article surface-treated therewith (2012-09-11),

8. 8143359 - Organic silicone compound (2012-03-27),

9. 8119760 - Curable perfluoropolyether compositions and rubber or gel articles comprising the same (2012-02-21),

10. 8022161 - Perfluoropolyether-organopolysiloxane copolymer and a surface treatment composition comprising the same (2011-09-20),

11. 8013096 - Perfluoroether moiety-containing polymer and a surface treating agent comprising the same (2011-09-06),

12. 7847015 - Coating composition (2010-12-07),

13. 7838616 - Perfluoropolyether rubber composition and ion-conducting polymer electrolyte membrane (2010-11-23),

14. 7794843 - Fluorine-containing organopolysiloxane, a surface treatment composition comprising the same and an article treated with the composition (2010-09-14),

15. 7781604 - Fluorine-containing acrylate (2010-08-24),

Title: Hirofumi Kishita: Innovator in Fluoropolymer Technologies

Introduction

Hirofumi Kishita, based in Annaka, Japan, is a prominent inventor known for his contributions to the field of polymer chemistry. With an impressive portfolio of 74 patents, his work primarily focuses on developing advanced fluoropolymer compositions that are crucial for various industrial applications.

Latest Patents

Kishita's recent innovations include several significant patents. One notable patent is for a fluorooxyalkylene group-containing polymer composition, which outlines a new surface treatment agent enhanced by the inclusion of a one-terminal modified polymer and a both-terminal modified polymer. This innovation allows for improved performance characteristics in treated articles. Another key patent is a fluorine-containing curable composition, known for its reduced viscosity and exceptional properties such as heat resistance and mechanical strength. This composition involves a straight chain fluorine-containing polymer and specific organosilicon compounds, positioning it as a valuable material in the manufacturing of durable rubber products.

Career Highlights

Throughout his career, Kishita has worked with reputable companies including Shin-Etsu Chemical Co., Ltd. and Shin-Etsu Chemical Company Co., Ltd. His tenure at these organizations underscores his commitment to advancing polymer technology and his role as an industry leader in research and development.

Collaborations

Kishita has collaborated with notable individuals in his field, including his coworkers Noriyuki Koike and Shinichi Sato. These partnerships have contributed to the depth and breadth of his work, helping to refine innovations that make significant impacts in various applications of polymer science.

Conclusion

Hirofumi Kishita's innovative approach to polymer chemistry and his extensive patent portfolio exemplify his dedication to advancing technology in the materials science sector. His contributions, particularly in fluoropolymer compositions, continue to influence the industry and provide solutions for high-performance applications.