Average Co-Inventor Count = 1.33
ph-index = 4
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 (2 from 833,002 patents)
2. Surgical Design Corporation (1 from 48 patents)
3. Velotron Machine Corp. (1 from 1 patent)
4 patents:
1. 4256385 - Cornea-examining instrument
2. 3940135 - Hockey game
3. 3937469 - Games using magnetically actuated members
4. 3936164 - Instruments for measuring visual fields