Average Co-Inventor Count = 2.57
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. Amoco Corporation (1 from 1,528 patents)
2. The Standard Oil Company (1 from 1,192 patents)
3. Standard Oil Company (indiana) (1 from 1,055 patents)
3 patents:
1. 4690217 - Process for water injectivity improvement treatment of water injection
2. 4201682 - Method of preparing overbased magnesium sulfonates
3. 3954849 - Preparation of alkenyl sulfonates