Average Co-Inventor Count = 2.88
ph-index = 3
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Oki Data Corporation (7 from 1,875 patents)
2. Tdk Corporation (6 from 7,976 patents)
3. Oki Electric Industry Co., Ltd. (6 from 4,979 patents)
4. Q.p. Corporation (1 from 37 patents)
5. Denka Engineering Kabushiki Kaisha (1 from 4 patents)
6. Mitsubishi Chemical Corporation (2,351 patents)
20 patents:
1. D1009988 - Toner cartridge
2. D998033 - Image drum cartridge
3. D984529 - Image drum cartridge
4. 11500303 - Image formation unit and image formation apparatus
5. D967891 - Toner cartridge
6. 11435692 - Image formation unit and image formation apparatus having image carrier shutter unit
7. 10962904 - Image forming unit attachable to image forming apparatus and protecting image carrying surface
8. 10606208 - Developer container, image formation unit, and image formation apparatus
9. D874563 - Image drum cartridge
10. D874564 - Toner cartridge
11. D874565 - Toner cartridge
12. D863418 - Toner cartridge
13. 9588463 - Developer container, image forming unit, and image forming apparatus
14. 7436051 - Component for fabricating an electronic device and method of fabricating an electronic device
15. 7173361 - Film bulk acoustic wave resonator