Average Co-Inventor Count = 4.20
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. Other (1 from 832,812 patents)
2. Nippon Sheet Glass Company, Limited (1 from 1,156 patents)
3. Tsutsunaka Plastic Industry Co., Ltd. (1 from 8 patents)
2 patents:
1. 6247511 - Method and apparatus for cutting wooden plates
2. 5286537 - Double glazing glass