Average Co-Inventor Count = 5.40
ph-index = 4
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. Sumitomo Chemical Company, Limited (5 from 6,892 patents)
2. Nippon Sheet Glass Company, Limited (2 from 1,156 patents)
3. Nittetsu Chemical Industrial Co., Ltd. (1 from 5 patents)
5 patents:
1. 5108857 - Light control sheets
2. 4929523 - Light control sheets
3. 4632966 - Thermosetting resin composition of an allylated novolak and a
4. 4108924 - Stabilized chlorine-containing resin composition
5. 4018739 - Tar-urethane composition