Average Co-Inventor Count = 4.44
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 164,173 patents)
4 patents:
1. 5539906 - Method and apparatus for controlling access to data elements in a data
2. 5446903 - Method and apparatus for controlling access to data elements in a data
3. 5307261 - Method and system for product configuration management in a computer
4. 5191534 - Engineering and manufacturing change control mechanism