Average Co-Inventor Count = 2.77
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. Matsushita Electric Industrial Co., Ltd. (3 from 27,375 patents)
3 patents:
1. 6839501 - Video cassette recorder
2. 6731861 - Video tape recorder
3. 6275647 - Video tape recorder