Average Co-Inventor Count = 2.67
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. Bernoulli Optical Systems Company (3 from 4 patents)
2. Matsushita-kotobuki Electronics, Industries, Ltd. (1 from 10 patents)
4 patents:
1. 5563868 - Optical servo system for magnetic disk
2. 5121371 - Optical servo system for magnetic disk
3. 5101385 - Magneto-optical information storage system for flexible media having
4. 5012463 - Optical read/write storage system for flexible media having bernoulli