Average Co-Inventor Count = 2.29
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. Phonetics, Inc. (4 from 5 patents)
2. Wisconsin Bell, Inc. (1 from 1 patent)
4 patents:
1. 5757892 - Self-contained fax communications appliance
2. 4716582 - Digital and synthesized speech alarm system
3. D282463 - Remote communication monitor and telephonic alarm
4. 4558181 - Portable device for monitoring local area