Average Co-Inventor Count = 4.57
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 (3 from 164,197 patents)
2. Lexmark International, Inc. (1 from 3,032 patents)
4 patents:
1. D321532 - Printer
2. 4994861 - Printing machine with charge neutralizing system
3. D310998 - Expansion unit for a personal computer
4. D307746 - Control unit for a personal computer