Average Co-Inventor Count = 13.48
ph-index = 4
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 (4 from 164,219 patents)
4 patents:
1. 6351871 - Aqueous quaternary ammonium hydroxide as a screening mask cleaner
2. 6280527 - Aqueous quaternary ammonium hydroxide as a screening mask cleaner
3. 6032683 - System for cleaning residual paste from a mask
4. 5916374 - Optimized in-line mask cleaning system