Average Co-Inventor Count = 2.07
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. Other (2 from 832,718 patents)
2. Clarke Industries, Inc. (1 from 13 patents)
3 patents:
1. 6280305 - Vibration surface finishing apparatus
2. 5605493 - Stone polishing apparatus and method
3. 5462568 - Stone polishing composition