IDiyas

For the Inventor, By the Inventor

Hikari, Japan

Sadakatsu Kumoi

USPTO Granted Patents = 12

Average Co-Inventor Count = 3.1

ph-index = 5

Forward Citations = 68(Granted Patents)


Location History:

  • Shin-nanyo, JP (1978 - 1980)
  • Yamaguchi, JP (1989 - 1999)
  • Hikari, JP (1984 - 2005)

Company Filing History:

goldMedal7 out of 285 
 
Toyo Soda Manufacturing Co., Ltd.
 patents
silverMedal5 out of 893 
 
Tosoh Corporation
 patents
bronzeMedal1 out of 1 
 
Delamine Bv
 patent
where one patent can have more than one assignee

Years Active: 1978-2005

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12 patents (USPTO):Explore Patents
1. 6896865 - Method for recovering hydrogen chloride from chlorine based waste and use of recovered hydrogen chloride (2005-05-24),
2. 5948265 - Ion-exchanger, process for production thereof, and process for removal (1999-09-07),
3. 5861537 - Method of producing high-quality polyethylenepolyamines (1999-01-19),
4. 5279717 - Process for removing chlorate salt from aqueous alkali chloride solution (1994-01-18),
5. 5039424 - Method for treating an amine-containing waste water (1991-08-13),
6. 4906782 - Process for preparation of alkyleneamines (1990-03-06),
7. 4845297 - Process for producing polyamines (1989-07-04),
8. 4625064 - Method for producing bis [.beta.(N,N-dimethylamino)ethyl]ether (1986-11-25),
9. 4492803 - Method for producing bis[.beta.-(N,N-dimethylamino)alkyl]-ether (1985-01-08),
10. 4490556 - Method for preparing bis[.beta.-(N,N-dimethylamino)ethyl]ether (1984-12-25),
11. 4182919 - Process for reaction in catalyst suspension system (1980-01-08),
12. 4123616 - Process for hydrogenation of organic peroxide (1978-10-31),
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