Average Co-Inventor Count = 2.86
ph-index = 2
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. U.S. Philips Corporation (1 from 14,087 patents)
2. T.m.c., Inc. (1 from 232 patents)
2 patents:
1. 4863162 - Gymnastics apparatus
2. 4323936 - Recording and/or reproducing apparatus