Average Co-Inventor Count = 2.18
ph-index = 6
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. (8 from 27,375 patents)
2. West Electric Co., Ltd. (1 from 145 patents)
8 patents:
1. D294412 - Rechargeable vacuum cleaner
2. D290884 - Portable rechargeable light
3. D290294 - Portable rechargeable light
4. D289930 - Flashlight
5. D275902 - Battery operated record cleaner
6. D264634 - Swing arm lamp
7. 4251854 - Light angle indicator of photographic flash
8. D243272 - Portable electric light