Average Co-Inventor Count = 2.03
ph-index = 8
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. Sony Corporation (7 from 58,131 patents)
2. Sony Computer Entertainment Inc. (5 from 1,799 patents)
3. Topcon Corporation (5 from 526 patents)
4. Samsung Electronics Co., Ltd. (2 from 131,744 patents)
5. Daiwa Seiko, Inc. (2 from 602 patents)
26 patents:
1. D1088236 - Eye testing apparatus and equipment
2. D1087797 - Surveying instrument
3. D1079950 - Eye testing apparatus
4. D1073496 - Surveying instrument
5. D1070616 - Surveying instrument
6. D1069123 - Eye testing apparatus and equipment
7. D1064282 - Eye testing apparatus and equipment
8. D1057170 - Eye testing apparatus and equipment
9. D1051965 - Laser marking instrument for construction
10. D971037 - Surveying instrument
11. 8359072 - Mobile terminal having floated displaying unit
12. 8094852 - Headset
13. D626108 - Mobile phone
14. D568275 - Combined video tape recorder with a display
15. D565557 - Microphone