Average Co-Inventor Count = 2.00
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. Speedfam-ipec Corporation (3 from 151 patents)
3 patents:
1. 7083515 - Clean room facility and construction method
2. 6612084 - Clean room and method
3. 6574937 - Clean room and method