Average Co-Inventor Count = 2.29
ph-index = 4
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)
2. Panasonic Intellectual Property Management Co., Ltd. (1 from 13,307 patents)
4 patents:
1. D766524 - Vacuum cleaner
2. D446306 - Medical information communication apparatus
3. D426637 - Sphygmomanometer
4. D402740 - Electric water closet