Average Co-Inventor Count = 3.00
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. Sony Corporation (1 from 58,130 patents)
2. The Yokohama Rubber Co., Ltd. (1 from 2,763 patents)
2 patents:
1. 6513722 - Cartridge and memory medium comprising cartridge and plate memory
2. 6319147 - Iron golf club set