Average Co-Inventor Count = 2.76
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. Dictaphone Corporation. (2 from 159 patents)
2. Other (1 from 832,680 patents)
3. Pitney Bowes Inc. (1 from 2,979 patents)
4 patents:
1. 5179627 - Digital dictation system
2. 5163085 - Digital dictation system with voice mail capability
3. 5146439 - Records management system having dictation/transcription capability
4. 4893197 - Pause compression and reconstitution for recording/playback apparatus