For the Inventor, By the Inventor

Enter assignee name

Katayama Special Industries, Ltd.

USPTO Granted Patents = 21

% Expired Patents = 14.3

Forward Citations = 171

Loading Chart...

Loading Chart...

9 inventors (with patents filed for the assignee):

Hirofumi Sugikawa (18 out of 18 patents)

Keiichi Hayashi (2 out of 7 patents)

Hayashi Keiichi (2 out of 2 patents)

4. Michibata Sachio (2 out of 2 patents)

5. Sugikawa Hirofumi (2 out of 2 patents)

6. Toshihiko Ikehata (1 out of 8 patents)

7. Takuyuki Okano (1 out of 2 patents)

8. Misao Iguchi (1 out of 1 patent)

9. Sachio Michibata (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 8568917 - Material for contact components or battery components, and battery using the same (2013-10-29),

2. 6869728 - Method of manufacturing battery electrode substrate and battery electrode substrate (2005-03-22),

3. 6682852 - Method of manufacturing battery electrode substrate and battery electrode substrate (2004-01-27),

4. 6682851 - Method of manufacturing battery electrode substrate and battery electrode substrate (2004-01-27),

5. 6500582 - Method of producing electrode for battery and electrode produced by method (2002-12-31),

6. 6485865 - Porous metal sheet, battery electrode plate composed of porous metal sheet and battery having electrode plate (2002-11-26),

7. 6455201 - Method of manufacturing battery electrode substrate and battery electrode substrate (2002-09-24),

8. 6436580 - Method of manufacturing porous sheet, porous metal sheet manufactured by method, and electrode for battery (2002-08-20),

9. 6165640 - Battery can-forming plate and battery can (2000-12-26),

10. 6153027 - Method of manufacturing battery can-forming plate, battery can-forming (2000-11-28),

11. 6110417 - Porous metallic sheet used as an electrode substrate of a battery and (2000-08-29),

12. 6080357 - Method of manufacturing porous sheet, porous metal sheet manufactured by (2000-06-27),

13. 5850591 - Method of manufacturing a metal sheet (1998-12-15),

14. 5840441 - Battery can, sheet for forming battery can, and method for manufacturing (1998-11-24),

15. 5655295 - Lead-provided porous metal sheet and method for manufacturing the sheet (1997-08-12),

Company Overview

Katayama Special Industries, Ltd. is a prominent manufacturer based in Osaka, Japan, specializing in precision components and advanced materials. The company focuses on developing innovative solutions for various sectors, including automotive, electronics, and industrial machinery. With a commitment to quality and technological advancement, Katayama leverages its expertise in materials science and engineering to deliver high-performance products that meet the evolving needs of its global clientele.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

21 Patents

#312 in Osaka

#2,866 in Japan

#30,001 in the World

Katayama Special Industries, Ltd.

Forward Citations = 171

9 inventors:

Hirofumi Sugikawa (18 out of 18 patents)

Keiichi Hayashi (2 out of 7 patents)

Hayashi Keiichi (2 out of 2 patents)

4. Michibata Sachio (2 out of 2 patents)

5. Sugikawa Hirofumi (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Katayama Special Industries, Ltd.. Retrieved from https://idiyas.com/company/katayama-special-industries

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

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]

Loading…