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Tohru Iwai

This inventor holds 8 USPTO granted patents. Top assignees: Sumitomo Electric Industries, Limited, Other. Active years: 1984-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tohru Iwai. Retrieved from https://idiyas.com/inventor/tohru-iwai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 8

% Patents Active = 87.5

Average Co-Inventor Count = 2.7

ph-index = 6

Forward Citations = 117(Granted Patents)

Company Filing History:

7 out of 10,647

Sumitomo Electric Industries, Limited

1 out of 834,570

Other

patents

Years Active: 1984-2003

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6521829 - Electromagnetic wave absorbing sheet (2003-02-18),

2. 5815795 - Oscillation detecting system for wireless repeater (1998-09-29),

3. 4983984 - Roadside beacon system with polarized beams (1991-01-08),

4. 4887090 - Vehicle antenna with shiftable gain patterns (1989-12-12),

5. 4833481 - Roadside beacon system (1989-05-23),

6. 4823138 - Roadside beacon system (1989-04-18),

7. 4444462 - Picture image observation system (1984-04-24),

8. 4429392 - Laser output controlling device (1984-01-31),

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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