Average Co-Inventor Count = 2.67
ph-index = 2
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. Clarion Co (4 from 1,057 patents)
4 patents:
1. 4672484 - Tape player changing mechanism
2. 4574322 - Channel changing mechanism of a tape player
3. 4538753 - Tape recorder
4. 4497001 - Auto-reverse mechanism for use in magnetic recording/reproducing