Average Co-Inventor Count = 1.33
ph-index = 2
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. O.k. Partnership (2 from 4 patents)
2. Other (1 from 832,812 patents)
3. Access Corporation (1 from 5 patents)
4 patents:
1. 4601397 - Machine-retrievable card and card retrieval apparatus and method therefor
2. 4330063 - Machine-retrievable card and card retrieval apparatus and method therefor
3. 4327834 - Document retrieval system
4. 4308960 - Document retrieval system and components thereof