Growing community of inventors

Cliffwood Beach, NJ, United States of America

Charles David Caldwell

Average Co-Inventor Count = 3.90

ph-index = 5

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.

Forward Citations = 440

Charles David CaldwellRobert Sayko (8 patents)Charles David CaldwellJohn Bruce Harlow (6 patents)Charles David CaldwellNorman Shaye (6 patents)Charles David CaldwellTheodore Sizer (2 patents)Charles David CaldwellKatherine Grace August (2 patents)Charles David CaldwellThomas Michael Bauer (2 patents)Charles David CaldwellBlake Lane Wattenbarger (2 patents)Charles David CaldwellWalter H Hawkins (2 patents)Charles David CaldwellAnthony James Grewe (1 patent)Charles David CaldwellHoward M Singer (1 patent)Charles David CaldwellBarry S Seip (1 patent)Charles David CaldwellRobert F Henrick (1 patent)Charles David CaldwellSteven M Herbst (1 patent)Charles David CaldwellSteven M Herbst (1 patent)Charles David CaldwellRobert J Sayko (1 patent)Charles David CaldwellTheodore Ii Sizer (1 patent)Charles David CaldwellCharles David Caldwell (11 patents)Robert SaykoRobert Sayko (54 patents)John Bruce HarlowJohn Bruce Harlow (15 patents)Norman ShayeNorman Shaye (8 patents)Theodore SizerTheodore Sizer (48 patents)Katherine Grace AugustKatherine Grace August (18 patents)Thomas Michael BauerThomas Michael Bauer (16 patents)Blake Lane WattenbargerBlake Lane Wattenbarger (5 patents)Walter H HawkinsWalter H Hawkins (3 patents)Anthony James GreweAnthony James Grewe (17 patents)Howard M SingerHoward M Singer (16 patents)Barry S SeipBarry S Seip (13 patents)Robert F HenrickRobert F Henrick (12 patents)Steven M HerbstSteven M Herbst (4 patents)Steven M HerbstSteven M Herbst (1 patent)Robert J SaykoRobert J Sayko (1 patent)Theodore Ii SizerTheodore Ii Sizer (7 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. At+t Corp. (5 from 4,208 patents)

2. At&t Intellectual Property I, LP (4 from 16,497 patents)

3. Lucent Technologies Inc. (2 from 9,364 patents)

4. At&t Ipm Corp. (91 patents)


11 patents:

1. 9361888 - Method and device for providing speech-to-text encoding and telephony service

2. 8489397 - Method and device for providing speech-to-text encoding and telephony service

3. 8265931 - Method and device for providing speech-to-text encoding and telephony service

4. 8019686 - Method and system for allowing simultaneous usage of prepaid services

5. 7627529 - Method and system for allowing simultaneous usage of prepaid services

6. 7433818 - Subscriber terminal for providing speech-text encoding and telephony service

7. 7027986 - Method and device for providing speech-to-text encoding and telephony service

8. 6687349 - System and method for defining a local communication space

9. 6418202 - Spontaneous messaging service for prepaid calling card users

10. 6021432 - System for processing broadcast stream comprises a human-perceptible

11. 5671267 - Interactive system for communications between a cordless telephone and a

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