Average Co-Inventor Count = 7.50
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. Varco I/p, Inc. (3 from 191 patents)
2. National Oilwell Varco, L.p. (2 from 572 patents)
5 patents:
1. 8746459 - Automatic vibratory separator
2. 8561805 - Automatic vibratory separator
3. 7571817 - Automatic separator or shaker with electromagnetic vibrator apparatus
4. 7331469 - Vibratory separator with automatically adjustable beach
5. 7278540 - Adjustable basket vibratory separator