Average Co-Inventor Count = 3.75
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. Hitachi, Ltd. (1 from 42,485 patents)
2. Matsushita Electric Industrial Co., Ltd. (1 from 27,375 patents)
3. West Electric Co., Ltd. (1 from 145 patents)
4. Sanwa Electronics Instrument Co., Ltd. (1 from 1 patent)
2 patents:
1. 5151696 - Multi-function keyboard for remote control apparatus
2. 4251854 - Light angle indicator of photographic flash