Call classification through analysis of dtmf events
US-2024323270-A1 · Sep 26, 2024 · US
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Identification of class of calling subscriber
Identification of class of calling subscriber · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04Q3/70 |
| Official title | Identification of class of calling subscriber |
| Display label | Identification of class of calling subscriber |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Call classification through analysis of DTMF events
US-12015731-B2 · Jun 18, 2024 · US
Prioritized call sessions
US-11627392-B2 · Apr 11, 2023 · US
Call classification through analysis of dtmf events
US-2022337924-A1 · Oct 20, 2022 · US
Prioritized Call Sessions
US-2022264195-A1 · Aug 18, 2022 · US
Call classification through analysis of DTMF events
US-11388490-B2 · Jul 12, 2022 · US
Prioritized call sessions
US-11363354-B2 · Jun 14, 2022 · US
Call classification through analysis of dtmf events
US-2021152897-A1 · May 20, 2021 · US
Call classification through analysis of DTMF events
US-10904643-B2 · Jan 26, 2021 · US
Prioritized Call Sessions
US-2020382849-A1 · Dec 3, 2020 · US
Prioritized call sessions
US-10715884-B2 · Jul 14, 2020 · US
Prioritized Call Sessions
US-2019281368-A1 · Sep 12, 2019 · US
Call classification through analysis of dtmf events
US-2019238956-A1 · Aug 1, 2019 · US
Call classification through analysis of DTMF events
US-10257591-B2 · Apr 9, 2019 · US
Prioritized call sessions
US-10178446-B2 · Jan 8, 2019 · US
Prioritized Call Sessions
US-2018070153-A1 · Mar 8, 2018 · US
Call classification through analysis of dtmf events
US-2018041823-A1 · Feb 8, 2018 · US
Prioritized call sessions
US-9716925-B2 · Jul 25, 2017 · US