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UL Ultratec: 51 patents #3 of 25Top 15%
Overall (All Time): #46,707 of 4,157,543Top 2%
54
Patents All Time

Issued Patents All Time

Showing 25 most recent of 54 patents

Patent #TitleCo-InventorsDate
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