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For the Inventor, By the Inventor

Yokohama, Japan

Kazuyasu Kawashima

USPTO Granted Patents = 6


Average Co-Inventor Count = 3.5

ph-index = 4

Forward Citations = 125(Granted Patents)


Location History:

  • Kanagawa, JP (1984 - 1987)
  • Yokohama, JP (1987 - 2005)

Company Filing History:

goldMedal3 out of 5 
 
Erma Optical Works, Ltd.
 patents
silverMedal2 out of 2 
 
Erma Inc.
 patents
bronzeMedal1 out of 879 
 
Sekisui Chemical Co., Ltd.
 patents
4. 1 out of 2 
 
Ulvac Service Corporation
 patents
where one patent can have more than one assignee

Years Active: 1984-2005

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6 patents (USPTO):Explore Patents
1. 6955758 - Ozone treating apparatus (2005-10-18),
2. 4729773 - Unit for degassing liquids (1988-03-08),
3. 4680552 - Apparatus for measuring impurities in super-pure water without exposure (1987-07-14),
4. 4652364 - Apparatus for adjusting the concentration of a solution (1987-03-24),
5. 4651087 - Apparatus for measuring impurities in ultrapure water (1987-03-17),
6. 4469495 - Method and device for degassifying liquid (1984-09-04),
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