Issued Patents All Time
Showing 25 most recent of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12335437 | Device independent text captioned telephone service | Robert M. Engelke, Kevin R. Colwell | 2025-06-17 |
| 12244752 | Text assisted telephony on wireless device method and apparatus | Christopher Engelke, Kevin R. Colwell | 2025-03-04 |
| 12231600 | Dual compatibility phone system | Robert M. Engelke, Kevin R. Colwell | 2025-02-18 |
| 12166920 | Communication device and methods for use by hearing impaired | Robert M. Engelke, Kevin R. Colwell | 2024-12-10 |
| 11936809 | Dual compatibility phone system | Robert M. Engelke, Kevin R. Colwell | 2024-03-19 |
| 11895257 | Text assisted telephony on wireless device method and apparatus | Christopher Engelke, Kevin R. Colwell | 2024-02-06 |
| 11856123 | Text assisted telephony on wireless device method and apparatus | Christopher Engelke, Kevin R. Colwell | 2023-12-26 |
| 11825008 | 911 call assistance for assisted device user | Robert M. Engelke, Kevin R. Colwell | 2023-11-21 |
| 11611644 | 911 call assistance for assisted device user | Robert M. Engelke, Kevin R. Colwell | 2023-03-21 |
| 11588936 | Communication device and methods for use by hearing impaired | Robert M. Engelke, Kevin R. Colwell | 2023-02-21 |
| 11570300 | Dual compatibility phone system | Robert M. Engelke, Kevin R. Colwell | 2023-01-31 |
| 11570291 | Text assisted telephony on wireless device method and apparatus | Christopher Engelke, Kevin R. Colwell | 2023-01-31 |
| 11272047 | 911 call assistance for assisted device user | Robert M. Engelke, Kevin R. Colwell | 2022-03-08 |
| 11258900 | Device independent text captioned telephone service | Robert M. Engelke, Kevin R. Colwell | 2022-02-22 |
| 11201957 | Text assisted telephony on wireless device method and apparatus | Christopher Engelke, Kevin R. Colwell | 2021-12-14 |
| 11190637 | Captioned telephone service | Robert M. Engelke, Kevin R. Colwell | 2021-11-30 |
| 11190630 | Text assisted telphony on wireless device method and apparatus | Christopher Engelke, Kevin R. Colwell | 2021-11-30 |
| 11153432 | Dual compatibility phone system | Robert M. Engelke, Kevin R. Colwell | 2021-10-19 |
| 11070669 | Communication device and methods for use by hearing impaired | Robert M. Engelke, Kevin R. Colwell | 2021-07-20 |
| 11064070 | Communication device and methods for use by hearing impaired | Robert M. Engelke, Kevin R. Colwell | 2021-07-13 |
| 11005991 | Captioned telephone service | Robert M. Engelke, Kevin R. Colwell | 2021-05-11 |
| 10972604 | Device independent text captioned telephone service | Robert M. Engelke, Kevin R. Colwell | 2021-04-06 |
| 10771604 | 911 call assistance for assisted device user | Robert M. Engelke, Kevin R. Colwell | 2020-09-08 |
| 10601980 | Captioning system and method for the vision impaired | Robert M. Engelke, Christopher Engelke, Kevin R. Colwell | 2020-03-24 |
| 10587751 | Captioned telephone service | Robert M. Engelke, Kevin R. Colwell | 2020-03-10 |