Average Co-Inventor Count = 1.28
ph-index = 9
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. Asahi Kogaku Kogyo Kabushiki Kaisha (9 from 3,132 patents)
2. Pentax Corporation (5 from 1,056 patents)
3. Hoya Corporation (1 from 2,532 patents)
15 patents:
1. D597580 - Conversion lens
2. D573167 - Conversion lens for single-lens reflex camera
3. D572740 - Spotting scope
4. D562875 - Strobe
5. D522032 - Binoculars
6. D522033 - Binoculars
7. D457906 - 35mm camera
8. D453351 - Strobe
9. D416033 - Surveillance camera body
10. D415128 - Scanner
11. 5917533 - Thermal line printer
12. D402278 - Scanner
13. 5638104 - Thermal line printer
14. D362267 - Printer
15. D361084 - Printer