Growing community of inventors

Santa Barbara, CA, United States of America

David S Trandal

Average Co-Inventor Count = 2.70

ph-index = 30

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 = 3,159

David S TrandalLeland W Kirchhoff (55 patents)David S TrandalDavid J Brahm (50 patents)David S TrandalColin Denison Kelley (36 patents)David S TrandalRobert F Smith (36 patents)David S TrandalDavid Frank Hofstatter (34 patents)David S TrandalDavid C McClintock (19 patents)David S TrandalRobert J Duva (12 patents)David S TrandalRobert A Dolan (11 patents)David S TrandalJason S Spievak (10 patents)David S TrandalDavid Giannini (10 patents)David S TrandalJohn R Day (8 patents)David S TrandalAnthony Bladon (5 patents)David S TrandalEric Johnson (3 patents)David S TrandalBob F Smith (3 patents)David S TrandalJason J Liberman (3 patents)David S TrandalAdrian Van Haaften (3 patents)David S TrandalDonnie Tognazzini (2 patents)David S TrandalScott Herriman (2 patents)David S TrandalIvan Johannessen (2 patents)David S TrandalRussell Williams (2 patents)David S TrandalVictor Jara Borda (1 patent)David S TrandalJeffrey Brian Stearns (1 patent)David S TrandalGarrett Mickle (1 patent)David S TrandalDavid S Trandal (135 patents)Leland W KirchhoffLeland W Kirchhoff (59 patents)David J BrahmDavid J Brahm (52 patents)Colin Denison KelleyColin Denison Kelley (54 patents)Robert F SmithRobert F Smith (38 patents)David Frank HofstatterDavid Frank Hofstatter (40 patents)David C McClintockDavid C McClintock (19 patents)Robert J DuvaRobert J Duva (15 patents)Robert A DolanRobert A Dolan (19 patents)Jason S SpievakJason S Spievak (17 patents)David GianniniDavid Giannini (16 patents)John R DayJohn R Day (8 patents)Anthony BladonAnthony Bladon (5 patents)Eric JohnsonEric Johnson (3 patents)Bob F SmithBob F Smith (3 patents)Jason J LibermanJason J Liberman (3 patents)Adrian Van HaaftenAdrian Van Haaften (3 patents)Donnie TognazziniDonnie Tognazzini (8 patents)Scott HerrimanScott Herriman (8 patents)Ivan JohannessenIvan Johannessen (2 patents)Russell WilliamsRussell Williams (2 patents)Victor Jara BordaVictor Jara Borda (11 patents)Jeffrey Brian StearnsJeffrey Brian Stearns (10 patents)Garrett MickleGarrett Mickle (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Callwave Communications, LLC (68 from 80 patents)

2. Callwave, Inc. (32 from 37 patents)

3. Other (16 from 831,952 patents)

4. Invoca, Inc. (9 from 30 patents)

5. J2 Global Communications, Inc. (5 from 40 patents)

6. Safefaces LLC (3 from 3 patents)

7. Ringcentral, Inc. (1 from 324 patents)

8. Ringrevenue, Inc. (1 from 3 patents)


135 patents:

1. 9917953 - Systems and methods for call processing

2. 9860385 - Methods and systems for providing communications services

3. 9838542 - Methods and systems for managing communications

4. 9706029 - Methods and systems for call processing

5. 9692891 - Methods and systems for blocking unwanted communications

6. 9686414 - Methods and systems for managing telecommunications and for translating voice messages to text messages

7. 9647978 - Methods and apparatus for providing expanded telecommunications service

8. 9621729 - Methods and systems for data transfer and campaign management

9. 9609139 - Methods and systems for providing telecommunications services

10. 9531882 - Methods and systems for confirming message delivery

11. 9497308 - Method and systems for messaging services

12. 9491297 - Methods and systems for managing telecommunications

13. 9438733 - Methods and systems for data transfer and campaign management

14. 9432494 - Methods and systems for creating a dynamic call log and contact records

15. 9413885 - Methods and systems for blocking unwanted communications

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as of
9/10/2025
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