Average Co-Inventor Count = 3.00
ph-index = 1
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. Caterpillar Inc. (4 from 9,451 patents)
4 patents:
1. D1065254 - Filter for an engine
2. D1065256 - Filter for an engine
3. D1065255 - Housing for a filter for an engine
4. D1032665 - Filter housing and pipework for an engine