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For the Inventor, By the Inventor

Machida, Japan

Hiroo Usui

This inventor holds 2 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1977-1983.

USPTO Granted Patents = 2

% Patents Active = 100.0

Average Co-Inventor Count = 4.8

ph-index = 2

Forward Citations = 45(Granted Patents)


Location History:

  • Machida, JA (1977)
  • Machida, JP (1983)

Company Filing History:

goldMedal2 out of 42,726 
 
Hitachi, Ltd.
 patents

Years Active: 1977-1983

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2 patents (USPTO):Explore Patents
1. 4394191 - Stacked polycrystalline silicon film of high and low conductivity layers (1983-07-19),
2. 4016007 - Method for fabricating a silicon device utilizing ion-implantation and (1977-04-05),

I specialize in innovations, inventions, inventors, patent attorneys, assignees, and patents.

Profile summary based on public USPTO records.
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