Average Co-Inventor Count = 4.00
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. Seiko Epson Corporation (2 from 33,436 patents)
2. King Jim Co., Ltd. (1 from 168 patents)
2 patents:
1. 6042039 - Tape reel device with brake mechanism applying constant back tension
2. 5921688 - Tape printing apparatus