IDiyas

For the Inventor, By the Inventor

Tsukuba, Japan

Yukio Sakai

USPTO Granted Patents = 9

Average Co-Inventor Count = 3.0

ph-index = 3

Forward Citations = 50(Granted Patents)


Location History:

  • Kurashiki, JP (1985 - 1987)
  • Kayama, JP (1988)
  • Okayama, JP (1990 - 1993)
  • Tukuba, JP (1999 - 2001)
  • Tsukuba, JP (2001)
  • Ibaraki-ken, JP (2001)

Company Filing History:

goldMedal8 out of 2,245 
 
Mitsubishi Gas Chemical Company, Inc.
 patents
silverMedal1 out of 1 
 
Mitsubishi Gas Chemical Company Co., Inc.
 patent

Years Active: 1985-2001

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9 patents (USPTO):Explore Patents
1. 6241923 - Process for the production of carbon fibers (2001-06-05),
2. 6228343 - Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes (2001-05-08),
3. 6187964 - Method of producing phenol compound (2001-02-13),
4. 5944980 - Method for producing isotropic pitch, activated carbon fibers and carbon (1999-08-31),
5. 5182010 - Mesophase pitch for use in the making of carbon materials (1993-01-26),
6. 4891126 - Mesophase pitch for use in the making of carbon materials and process (1990-01-02),
7. 4789455 - Process for producing pitch used as starting material for the making of (1988-12-06),
8. 4694089 - Process for preparing pyromellitic dianhydride (1987-09-15),
9. 4500730 - Process for producing aromatic polycarboxylic acid (1985-02-19),
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