Average Co-Inventor Count = 1.00
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. Sanyo Electric Co., Ltd. (1 from 8,777 patents)
2. Tokyo Sanyo Electric Co. (1 from 68 patents)
1 patent:
1. D288440 - Cassette tape player