Average Co-Inventor Count = 1.63
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 (3 from 832,843 patents)
2. Cubic-western Data (1 from 39 patents)
4 patents:
1. 5082015 - Sequencing valve position indicator
2. 4977502 - Transit vehicle farebox for conducting multi-media transit fare
3. 4877179 - Farebox security device
4. 4796657 - Zone selector and locking mechanism for sequencing valve