Average Co-Inventor Count = 3.35
ph-index = 5
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. International Business Machines Corporation (6 from 164,108 patents)
6 patents:
1. 6280884 - Process for photorefractive index grating formation
2. 5607799 - Optical photorefractive article
3. 5460907 - Photorefractive materials
4. 5361148 - Apparatus for photorefractive two beam coupling
5. 5064264 - Photorefractive materials
6. 4614116 - Phase sensitive ultrasonic modulation method for the detection of