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For the Inventor, By the Inventor

Narashino, Japan

Hiroji Kumagai

This inventor holds 4 USPTO granted patents. Top assignees: Toppan Printing Co., Ltd., Toyo Ink Mfg. Co., Ltd.. Active years: 1979-1986.

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 4.4

ph-index = 3

Forward Citations = 43(Granted Patents)


Location History:

  • Narashino, JP (1979 - 1981)
  • Tokyo, JP (1986)

Company Filing History:

goldMedal4 out of 1,269 
 
Toppan Printing Co., Ltd.
 patents
silverMedal1 out of 105 
 
Toyo Ink Mfg. Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1979-1986

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4 patents (USPTO):Explore Patents
1. 4592977 - Lithographic printing plate (1986-06-03),
2. 4268158 - Dry planographic printing apparatus (1981-05-19),
3. 4209551 - Method of fabricating a phosphor screen of a color television picture (1980-06-24),
4. 4175958 - Dry planographic printing method and plate made by electrophotographic (1979-11-27),
Profile summary based on public USPTO records.
Please report any incorrect information to [email protected]
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