Average Co-Inventor Count = 2.31
ph-index = 3
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. (5 from 27,375 patents)
5 patents:
1. D251665 - Tape recorder
2. D249507 - Tape recorder
3. D248392 - Tape recorder
4. D245037 - Combined radio receiver and cassette tape recorder
5. D245038 - Combined radio receiver and cassette tape recorder