Average Co-Inventor Count = 1.00
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. Parker Manufacturing Co. (2 from 28 patents)
2. Ramco Industries, Inc. (1 from 10 patents)
3 patents:
1. 4238209 - Gas drying apparatus
2. 4072441 - Hole saw
3. 3940044 - Fastener driver with safety device