Average Co-Inventor Count = 6.35
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. University of British Columbia (2 from 932 patents)
2. Other (1 from 832,680 patents)
3. Qlt Phototherapeutics, Inc. (1 from 15 patents)
4. Ciba Vision Opthalmics (1 from 1 patent)
3 patents:
1. 6248734 - Use of photodynamic therapy for prevention of secondary cataracts
2. 6043237 - Use of photodynamic therapy for prevention of secondary cataracts
3. 5857965 - Operating stage