Average Co-Inventor Count = 3.92
ph-index = 6
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 (16 from 58,131 patents)
16 patents:
1. 8564907 - Position determining member to align a magnetic tape cartridge in a magnetic recording and reproducing apparatus
2. 7252257 - Tape drive apparatus, tape extraction apparatus and tape cassette
3. 7019931 - Tape drive apparatus
4. 6991193 - Tape drive device, tape extraction device and tape cassette
5. 6869036 - Recording and/or reproducing apparatus
6. 6865047 - Single reel tape cartridge and recording and reproducing device using the tape cartridge
7. 6762903 - Tape drive
8. 6680817 - Recording medium device containing recording medium and recording/reproducing device
9. 6667846 - Information storage device having tape cassette with noncontact memory and antenna
10. 6611394 - Recording medium, tape drive, and method for identifying type of recording medium
11. 6583955 - Tape cassette having first and second write inhibit mechanisms
12. 6490132 - Tape cassette having first and second write inhibit mechanisms for cassette type discrimination
13. 6445528 - Transformer and cassette library system having the same
14. 6084736 - Reading device for reading identification information of a cartridge
15. 5905604 - Cassette transfer mechanism for use in cassette library system