Average Co-Inventor Count = 2.40
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. U.S. Philips Corporation (2 from 14,087 patents)
2 patents:
1. 4798447 - Lens mounting for an electrodynamic device for recording on and/or
2. 4691311 - Disc reading apparatus with disc shoot journaled in frame