Average Co-Inventor Count = 1.33
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. Other (2 from 832,891 patents)
2. Roca Productions, Inc. (2 from 2 patents)
4 patents:
1. 6776550 - Removable insert for a binder
2. 6702330 - Book with hidden spine
3. 5739744 - Electronically simulated rotary-type cardfile
4. 5452240 - Electronically simulated rotary-type cardfile