Average Co-Inventor Count = 5.07
ph-index = 17
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. Hitachi, Ltd. (38 from 42,508 patents)
2. Babcock-Hitachi Kabushiki Kaisha (7 from 222 patents)
3. Eisai Company, Limited (5 from 677 patents)
4. Victor Company of Japan, Limited (3 from 2,887 patents)
5. Mitsubishi Petrochemical Company Limited (2 from 546 patents)
6. Hitachi Global Storage Technologies Japan, Ltd. (2 from 227 patents)
7. Shinmaywa Industries, Ltd. (2 from 51 patents)
8. Babcock-Hitachi K.k. (2 from 26 patents)
9. Hitachi, Ltd. and Babcock-Hitachi Kabushiki Kaisha (1 from 1 patent)
52 patents:
1. 7259936 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device
2. 7223449 - Film deposition method
3. 7133218 - Optical system
4. 7035049 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device
5. 6852432 - Magnetic recording media and magnetic disk apparatus
6. 6815454 - Percutaneously applicable preparation and suppository containing an antidementia medicament
7. 6801397 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device
8. 6743443 - Tablets immediately disintegrating in the oral cavity
9. 6703148 - Magnetic recording medium and magnetic disk apparatus using the same
10. 6623873 - Magnetic recording medium and magnetic disk apparatus using the same
11. 6577472 - Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture
12. 6544667 - Magnetic recording medium, producing method of the same and magnetic recording system
13. 6521639 - Percutaneously applicable preparation and suppository containing an antidementia medicament
14. 6517784 - Exhaust gas purifying apparatus for an internal combustion engine
15. 6509111 - Magnetic recording media and magnetic disk apparatus