Average Co-Inventor Count = 1.26
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. Pitney Bowes Inc. (8 from 2,979 patents)
8 patents:
1. 4805946 - Postage meter security seal
2. 4796526 - Value printing die protection device in an electronic postage meter
3. 4796527 - Value printing die protection mechanism in a postage meter machine
4. 4787046 - Mailing system having a capability for one-step postage metering
5. 4608484 - Postage meter
6. 4559444 - Postage meter
7. 4509780 - Postage access door for postage meters
8. 4478443 - Postage meter security seal