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Kawasaki, Japan

Keiko Tonai

This inventor holds 8 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1996-2001.

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 4

Forward Citations = 64(Granted Patents)

Company Filing History:

8 out of 39,367

Fujitsu Corporation

Years Active: 1996-2001

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6212340 - Image forming apparatus utilizing a two-component developing apparatus with automatic toner replenishment and developer replacement (2001-04-03),

2. 5987280 - Developing device for electrostatic latent image (1999-11-16),

3. 5933690 - Toner recovery device (1999-08-03),

4. 5754919 - Electrostatic recording apparatus utilizing superimposition of colors in (1998-05-19),

5. 5640662 - Hot roller for thermal fixation device having elastomeric and (1997-06-17),

6. 5617192 - Multicolor electrostatic recording apparatus and electrostatic latent (1997-04-01),

7. 5517293 - Heat roller fixing apparatus with rotating lamps (1996-05-14),

8. 5508797 - Color image forming apparatus having toner image forming device (1996-04-16),

Profile summary based on public USPTO records.

Please report any incorrect information to [email protected]

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