Average Co-Inventor Count = 3.69
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 164,108 patents)
4 patents:
1. 5689668 - Dynamic hierarchical selection menu
2. 5559945 - Dynamic hierarchical selection menu
3. 5515487 - Displaying partial graphs by expanding and collapsing nodes
4. 5491795 - Window management system with a hierarchical iconic array and miniature