Average Co-Inventor Count = 2.90
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. Matsushita Electric Industrial Co., Ltd. (8 from 27,375 patents)
2. Samsung Electronics Co., Ltd. (1 from 131,744 patents)
9 patents:
1. 5121271 - Cassette holder device capable of receiving large and small size
2. 5101304 - Cassette holder device capable of preventing erroneous insertion of
3. 5034831 - Magnetic recording and reproducing apparatus having cassette
4. 4844377 - Tape cassette
5. 4809113 - Tape cassette with improved cover structure
6. 4803575 - Tape cassettes having bottom grooves for use in tape recorder having
7. 4191978 - Method for adjusting rotary head type magnetic video recording and
8. 4075670 - Tape auto-loading recording and reproducing apparatus
9. 4074329 - Rotary head type magnetic recording and reproducing system