For the Inventor, By the Inventor

Enter assignee name

Ishigaki Company Limited

USPTO Granted Patents = 29

CIPO Patents = 2

EPO Patents = 4

Trademarks = 6

Forward Citations = 190

Loading Chart...

Loading Chart...

35 inventors (with patents filed for the assignee):

Eiichi Ishigaki (14 out of 19 patents)

Masayoshi Katayama (7 out of 7 patents)

Manabu Yamashita (6 out of 28 patents)

4. Kazuhisa Otani (4 out of 4 patents)

5. Masakazu Morita (3 out of 3 patents)

6. Hiroyuki Mino (3 out of 3 patents)

7. Yasuaki Nishihara (3 out of 3 patents)

8. Atsushi Yanai (3 out of 3 patents)

9. Ryosuke Tamauchi (3 out of 3 patents)

10. Yasutaka Suetsugu (3 out of 3 patents)

11. Kunio Fujita (3 out of 3 patents)

12. Masaharu Miyawaki (3 out of 3 patents)

13. Yukitoshi Mitani (3 out of 4 patents)

14. Hiroichi Kawasaki (3 out of 4 patents)

15. Nobuo Honda (3 out of 3 patents)

29 patents: Sort by Forward Citations

1. 12083452 - Outer cylinder screen washing apparatus of screw press (2024-09-10),

2. 11401188 - Sludge dehydration system and sludge dehydration method (2022-08-02),

3. 10974982 - Recovery device and recovery method for recovering specific material from sludge (2021-04-13),

4. 10252482 - Belt press (2019-04-09),

5. 10252192 - Filter medium, filtering device using filter medium, and filter medium manufacturing method (2019-04-09),

6. 9975798 - Sludge dehydration system and sludge dehydration method (2018-05-22),

7. 9718004 - Filter medium layer and filter device provided with same (2017-08-01),

8. 8881648 - Concentrator-integrated screw press (2014-11-11),

9. D655780 - Filter plate for a filter press (2012-03-13),

10. D655779 - Filter plate for a filter press (2012-03-13),

11. 7906029 - Sludge thickening method (2011-03-15),

12. 7828961 - Sludge thickening device (2010-11-09),

13. 7021890 - Turbo pump (2006-04-04),

14. 6923694 - Waterjet propelling device of boat (2005-08-02),

15. 6821167 - Outboard motor (2004-11-23),

Ishigaki Company Limited is a renowned company specializing in innovative construction services. With over 50 years of experience, we have proudly delivered numerous successful projects across various industries. Our expertise includes civil engineering, building construction, and architectural design. We strive to provide high-quality solutions that meet the unique needs of our clients. Visit our website to learn more about our company and the services we offer.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

29 Patents

#943 in Tokyo

#2,302 in Japan

#21,884 in the World

Ishigaki Company Limited

Forward Citations = 190

35 inventors:

Eiichi Ishigaki (14 out of 19 patents)

Masayoshi Katayama (7 out of 7 patents)

Manabu Yamashita (6 out of 28 patents)

4. Kazuhisa Otani (4 out of 4 patents)

5. Masakazu Morita (3 out of 3 patents)

Please report any incorrect information to support@idiyas.com

Loading…