Identification device, license plate arrangement and license plate system
US-12003258-B2 · Jun 4, 2024 · US
Portable transmitters
Portable transmitters · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B1/034 |
| Official title | Portable transmitters |
| Display label | Portable transmitters |
| Total patents | 84 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 7 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 12 |
| 2020 | 14 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Portable radio with button over speaker
US-11197078-B2 · Dec 7, 2021 · US
Methods for attaching transmitters to animals
US-11139840-B2 · Oct 5, 2021 · US
Radio frequency system, method for controlling antenna switching, and related products
US-2021143844-A1 · May 13, 2021 · US
In-vehicle device, recording medium, and keyless entry system
US-10875501-B2 · Dec 29, 2020 · US
Transmitter, trigger device, transmitter mode setting system, and transmitter mode setting method
US-10864784-B2 · Dec 15, 2020 · US
Portable radio with button over speaker
US-2020366979-A1 · Nov 19, 2020 · US
Portable radio with button over speaker
US-2020314512-A1 · Oct 1, 2020 · US
Electronic device for processing audio data and operating method thereof
US-2020293269-A1 · Sep 17, 2020 · US
Card-type vehicle smart key and control method therefor
US-10773686-B2 · Sep 15, 2020 · US
Portable radio with button over speaker
US-10779066-B1 · Sep 15, 2020 · US
Electronic device and controlling method of electronic device
US-2020273324-A1 · Aug 27, 2020 · US
Acoustic transmission device and process for tracking selected hosts
US-10739434-B2 · Aug 11, 2020 · US
Card-type vehicle smart key and control method therefor
US-2020172053-A1 · Jun 4, 2020 · US
Antenna for mobile phone and mobile phone having the same
US-10665951-B2 · May 26, 2020 · US
Logistics apparatus and method for identifying empty/full state of logistics apparatus
US-2020118065-A1 · Apr 16, 2020 · US
In-vehicle authentication device and portable device authentication method
US-2020107194-A1 · Apr 2, 2020 · US
In-vehicle device, recording medium, and keyless entry system
US-2020017074-A1 · Jan 16, 2020 · US
Portable sound equipment
US-10448160-B2 · Oct 15, 2019 · US
Transmitter, trigger device, transmitter mode setting system, and transmitter mode setting method
US-2019275848-A1 · Sep 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B1/034?
- CPC H04B1/034 is the Cooperative Patent Classification code for “Portable transmitters.”
- How many patents are filed under CPC H04B1/034 (Portable transmitters)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC H04B1/034 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).