Average Co-Inventor Count = 3.46
ph-index = 1
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)
3 patents:
1. 7248430 - Magnetic recording and reproduction apparatus
2. 7180698 - Magnetic recording and reproduction apparatus
3. 6172840 - Magnetic recording/reproduction apparatus including a rotary head cylinder and both vertical and inclined guides for winding a magnetic tape about the rotary head cylinder