Average Co-Inventor Count = 2.57
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. Other (3 from 832,812 patents)
3 patents:
1. 4408578 - Piston engine as a combustion engine or as a compressor with opposed
2. 4318370 - Rotary internal combustion engines
3. 4178885 - Rotary piston/cylinder engines