Average Co-Inventor Count = 1.50
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. Parker-Hannifin Corporation (1 from 1,666 patents)
2. Briggs & Stratton, LLC (1 from 782 patents)
2 patents:
1. 8181458 - Pressure recovery system
2. 7614227 - Rotary control valve for a hydrostatic transmission