Average Co-Inventor Count = 3.00
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. U.S. Philips Corporation (3 from 14,087 patents)
3 patents:
1. 4654731 - VCR cassette transport mechanism with mechanical overload protection
2. 4509087 - Tape grounding element in a magnetic-tape cassette
3. 4125844 - Magnetic position marker for a tape recorder using magnetically