Average Co-Inventor Count = 3.36
ph-index = 4
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. Seiko Epson Corporation (11 from 33,436 patents)
2. King Jim Co., Ltd. (4 from 168 patents)
3. Seiko Epson Corporation and King Jim Co., Ltd. (2 from 5 patents)
4. Sieko Epson Corporation (1 from 14 patents)
14 patents:
1. 7677740 - Optical diaphragm and projector
2. 6270326 - Transfusion device and liquid supply tube
3. 6152624 - Stamp-making apparatus, as well as function changeover mechanism,
4. 6062749 - Dial input device
5. 6040918 - Copying machine
6. 6025051 - Plate-making strip and a plate making-strip group, as well as a printer
7. 6016749 - Stamp-making apparatus, as well as function changeover mechanism,
8. 6006661 - Stamp-making apparatus, as well as function changeover mechanism,
9. 5934191 - Electronic apparatus
10. 5915299 - Stamp making unit and package therefor
11. 5779373 - Ribbon cartridge device for electronic equipment
12. 5771808 - Stamp material, stamp making method using the stamp material and stamp
13. 5699166 - Copying machine for reproducing an image on a continuous web of labels
14. 5669304 - Stamp unit and method of preparing stamp unit