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. Toyo Kohan Co., Ltd. (2 from 260 patents)
2 patents:
1. 4585529 - Method for producing a metal lithographic plate
2. 4445998 - Method for producing a steel lithographic plate