Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9438636 | Method to block split phone and gateway registration | Charles Y. Farwell, Don Gillespie, Cliff Grimes, Scott Hendrick, Won Huh +5 more | 2016-09-06 |
| 9183359 | Method and apparatus for assigning and releasing licenses | William T. Walker | 2015-11-10 |
| 8089872 | Efficient load balancing and heartbeat mechanism for telecommunication endpoints | Mehmet C. Balasaygun, Frank J. Boyle, Scott Hendrick, Renee Krahn, Manish Marwah +1 more | 2012-01-03 |
| 7668100 | Efficient load balancing and heartbeat mechanism for telecommunication endpoints | Mehmet C. Balasaygun, Frank J. Boyle, Scott Hendrick, Renee Krahn, Manish Marwah +1 more | 2010-02-23 |
| 7327721 | Determination of endpoint virtual address assignment in an internet telephony system | Mehmet C. Balasaygun, Charles Bertsch, Anthony Frissora, Robert R. Gilman, Brijesh Mandan | 2008-02-05 |
| 5485512 | Mnemonic and synonymic addressing in a telecommunications system | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1996-01-16 |
| 5412714 | Mnemonic and synonymic addressing in a telecommunications system | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1995-05-02 |
| 5404395 | External-to-internal numbering plan aliasing | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1995-04-04 |
| 5343517 | Use-code based call-treatment selection | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-08-30 |
| 5333188 | Dialed number recognition arrangement | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-07-26 |
| 5329582 | Dynamic tone-administration | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-07-12 |
| 5321743 | Shared-tenant services arrangement providing numbering-plan independence and cross-plan access to tenant groups | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-06-14 |
| 5311584 | Telecommunications call-processing arrangement | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-05-10 |
| 5311586 | Dynamic routing-administration | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Ditmer, Frederick R. Fix +2 more | 1994-05-10 |
| 5299261 | Arrangement for effecting segmentation of a dialed number | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-03-29 |
| 5289535 | Context-dependent call-feature selection | Frank J. Bogart, Bruce D. Butterfield, David Chavez, Henry C. Dittmer, Frederick R. Fix +2 more | 1994-02-22 |
| 4661974 | Automatic route selection of a private telephone network path on the basis of a public telephone network number | Bruce M. Bales, Steven London | 1987-04-28 |