Average Co-Inventor Count = 2.00
ph-index = 9
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 (27 from 6,858 patents)
2. Ciby-Geigy Corporation (1 from 2 patents)
28 patents:
1. 4219464 - Hindered piperidine carboxylic acids, metal salts thereof and stabilized
2. 4208522 - Substituted piperazine diones
3. 4203890 - Hindered piperidine carboxylic acids, metal salts thereof and stabilized
4. 4191829 - Hindered piperidine carboxylic acids and metal salts thereof
5. 4191682 - Hindered piperidine carboxylic acids, metal salts thereof and stabilized
6. 4139520 - Compositions stabilized with hindered piperidine carboxylic acids or
7. 4125517 - Substituted piperazine diones and polymeric compositions stabilized
8. 4116933 - Hindered piperidine carboxylic acids, metal salts thereof and stabilized
9. 4101509 - Hindered piperidine carboxylic acids, metal salts thereof and stabilized
10. 4089842 - Hindered piperidine carboxylic acids, metal salts thereof and stabilized
11. 4087406 - Metal salts of hindered piperidine carboxylic acids and stabilized
12. 4070335 - 3,5-Dialkyl-4-hydroxyphenylalkyl substituted piperazine diones and
13. 4069199 - Metal salts of hindered piperidine carboxylic acids and stabilized
14. 4069196 - Piperidyl esters of higher di-tri-, and polybasic aliphatic carboxylic
15. 4067848 - Alkyl alkanoate derivatives of substituted piperazine-diones and polymer