Average Co-Inventor Count = 4.00
ph-index = 5
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. Ciba-geigy Corporation (8 from 6,850 patents)
8 patents:
1. 4460567 - Quaternary, copolymeric, high molecular weight ammonium salts based on
2. 4460568 - Quaternary, copolymeric, high molecular weight ammonium salts based on
3. 4460569 - Quaternary, copolymeric, high molecular weight ammonium salts based on
4. 4460570 - Quaternary, copolymeric, high molecular weight ammonium salts based on
5. 4454114 - Quaternary, copolymeric, high molecular weight ammonium salts based on
6. 4440744 - Quaternary, copolymeric, high molecular weight ammonium salts based on
7. 4419344 - Quaternary, copolymeric, high molecular weight ammonium salts based on
8. 4393886 - Mixtures of quaternary, polymeric, high molecular weight ammonium salts,