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Hirofumi Sato

USPTO Granted Patents = 8

Average Co-Inventor Count = 2.5

ph-index = 6

Forward Citations = 118(Granted Patents)

Company Filing History:

5 out of 17,583

Brother Kogyo Kabushiki-kaisha

Brother Industries, Ltd.

Years Active: 2000-2009

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. D601184 - Photosensitive drum unit (2009-09-29),

2. D601183 - Toner cartridge (2009-09-29),

3. D595343 - Toner cartridge (2009-06-30),

4. 6812421 - Key switch device, keyboard with the key switch device, and electronic device with the keyboard (2004-11-02),

5. 6586695 - Electronic apparatus including keyboard with key switch device (2003-07-01),

6. 6455794 - Key switch device, keyboard with the key switch device, and electronic apparatus with the keyboard (2002-09-24),

7. 6371671 - Key switch device, keyboard with the key switch device, and electronic apparatus with the keyboard (2002-04-16),

8. 6072134 - Key switch device (2000-06-06),

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