Average Co-Inventor Count = 5.14
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. Matsushita Electric Industrial Co., Ltd. (2 from 27,375 patents)
2. Matsushita Electric Industrial (1 from 33 patents)
3 patents:
1. 7416384 - Electric blower and vacuum cleaner using same
2. 7346957 - Vacuum cleaner
3. 7309365 - Vacuum cleaner