Average Co-Inventor Count = 1.96
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 (12 from 58,131 patents)
2. Komatsu Zenoah Co. (2 from 75 patents)
3. Memory-tech Holdings Inc. (2 from 19 patents)
4. Furukawa Mfg. Co., Ltd. (1 from 22 patents)
17 patents:
1. 10255941 - Optical disc having a plurality of recording layers
2. 9928868 - Optical disc having a plurality of recording layers
3. 9714105 - Apparatus for supplying a large amount of bag
4. D384940 - Remote controller
5. D330552 - Tape player
6. 5129125 - Cleaning machine
7. 5129124 - Cleaning machine
8. D320208 - Combined tape player and radio tuner
9. D316094 - Tape player
10. D316095 - Tape player
11. D314762 - Tape player
12. D312638 - Cassette tape player
13. D311537 - Tape recorder
14. D311006 - Cassette tape recorder
15. D305762 - Combined tape player and radio tuner