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For the Inventor, By the Inventor

Nagano, Japan

Hirofusa Shirai

USPTO Granted Patents = 10 


Average Co-Inventor Count = 4.4

ph-index = 4

Forward Citations = 28(Granted Patents)


Location History:

  • Chiisagata, JP (1987 - 1991)
  • Chiisagata-gun, Nagano, JP (1996 - 1997)
  • Nagano, JP (1998)
  • Chiisagata-Gun, JP (1999)
  • Ueda-shi, Nagano JP (2007)

Company Filing History:

goldMedal6 out of 7,977 
 
Tdk Corporation
 patents
silverMedal1 out of 1 
 
Hirofusa Shirai & Nisshinbo Industries, Inc.
 patent
bronzeMedal1 out of 264 
 
Sankyo Seiki Mfg. Co., Ltd
 patents
4. 1 out of 2 
 
Ueda Textile Science Foundation
 patents
5. 1 out of 314 
 
Taisho Pharmaceutical Co., Ltd.
 patents
6. 6 out of 832,891 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2007

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10 patents (USPTO):Explore Patents
1. 7196240 - Method and equipment for making polychlorobiphenyl nontoxic (2007-03-27),
2. 5922743 - Pyridine derivative (1999-07-13),
3. 5828795 - Sealing device for use in a motor (1998-10-27),
4. 5776576 - Phthalaocyanine compound as a layer in optical recording medium (1998-07-07),
5. 5763601 - Naphthalocyanine compounds, naphthalocyanine polymers and method for (1998-06-09),
6. 5633370 - Naphthalocyanine compounds, naphthalocyanine polymers and method for (1997-05-27),
7. 5618930 - Phthalocyanine compound and method for making, nitro-substituted (1997-04-08),
8. 5516900 - Phthalocyanine compounds containing either a polymerizable vinyl group, (1996-05-14),
9. 5053464 - Polyurethane containing metal phthalocyanine in the main chain (1991-10-01),
10. 4663084 - Electroconductive compositions (1987-05-05),
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