Average Co-Inventor Count = 3.00
ph-index = 3
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. Shell Oil Comapny (2 from 7,646 patents)
2. Pennzoil-Quaker State Company (1 from 15 patents)
3 patents:
1. 7244522 - Lubricant for magnetic recording medium and use thereof
2. 7195828 - Lubricant for magnetic recording medium and use thereof
3. 6667284 - Lubricant for magnetic recording medium and use thereof