Reception control apparatus, reception system, control method, and control program
US-12388931-B2 · Aug 12, 2025 · US
involving a common line for all parties
involving a common line for all parties · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04M9/02 |
| Official title | involving a common line for all parties |
| Display label | involving a common line for all parties |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 9 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method, system, and server for reducing noise in a workspace
US-12346754-B2 · Jul 1, 2025 · US
Method, system, and server for reducing noise in a workspace
US-2025165317-A1 · May 22, 2025 · US
Evaluation apparatus, evaluation method, and program
US-12267453-B2 · Apr 1, 2025 · US
Information processing apparatus and method for calling
US-2024314235-A1 · Sep 19, 2024 · US
Reception control apparatus, reception system, control method, and control program
US-2024314243-A1 · Sep 19, 2024 · US
Active noise control system
US-11922916-B2 · Mar 5, 2024 · US
Audio group identification for conferencing
US-11916686-B2 · Feb 27, 2024 · US
Display control method, information processing server, and display terminal
US-11856334-B2 · Dec 26, 2023 · US
Display control method, information processing server, and display terminal
US-2023262203-A1 · Aug 17, 2023 · US
Volume control over shared trunk lines in intercom systems
US-11722603-B2 · Aug 8, 2023 · US
Display control method, information processing server, and display terminal
US-11647166-B2 · May 9, 2023 · US
Audio Group Identification For Conferencing
US-2023129867-A1 · Apr 27, 2023 · US
Nurse call system, method for nurse call and program
US-2023053539-A1 · Feb 23, 2023 · US
Volume control over shared trunk lines in intercom systems
US-2022377180-A1 · Nov 24, 2022 · US
Active noise control system
US-2022293079-A1 · Sep 15, 2022 · US
Volume control over shared trunk lines in intercom systems
US-11438461-B2 · Sep 6, 2022 · US
Evaluation apparatus, evaluation method, and program
US-2022263933-A1 · Aug 18, 2022 · US
Display control method, information processing server, and display terminal
US-2022264059-A1 · Aug 18, 2022 · US
Volume control over shared trunk lines in intercom systems
US-2022124202-A1 · Apr 21, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04M9/02?
- CPC H04M9/02 is the Cooperative Patent Classification code for “involving a common line for all parties.”
- How many patents are filed under CPC H04M9/02 (involving a common line for all parties)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC H04M9/02 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).