Average Co-Inventor Count = 1.33
ph-index = 8
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. Ingram Corporation (8 from 11 patents)
8 patents:
1. 4470740 - Apron for pipe handling system
2. 4453872 - Handling apparatus for pipe and other tubulars
3. 4439091 - Pipe feeding system
4. 4426182 - Tubular handling apparatus
5. 4382738 - Pipe handling system
6. 4380297 - Pipe storage system
7. 4379676 - Pipe handling system
8. 4371302 - Pipe handling apparatus