Average Co-Inventor Count = 3.00
ph-index = 1
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. Mitsumi Electric Company Ltd. (3 from 1,572 patents)
3 patents:
1. 7777984 - Cartridge holder apparatus and magnetic recording/reproduction apparatus including same
2. 7742256 - Cartridge slot door mechanism for covering cartridge slot
3. 7522374 - Tape cassette recording/reproducing apparatus