Average Co-Inventor Count = 3.26
ph-index = 3
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. (5 from 27,375 patents)
5 patents:
1. 5602818 - Lock mechanism for a floating unit in a disc player
2. 5396381 - Apparatus for identifying a type of tape cassette inserted into a tape
3. 4558964 - Print element and printing apparatus using same
4. 4133012 - Magnetic recording and reproducing device
5. 4021006 - Container for magnetic tape