Portable terminal device and display control method
US-11188207-B2 · Nov 30, 2021 · US
including more than one keyboard unit
including more than one keyboard unit · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04M2250/18 |
| Official title | including more than one keyboard unit |
| Display label | including more than one keyboard unit |
| Total patents | 45 |
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 | 9 |
| 2016 | 18 |
| 2017 | 6 |
| 2018 | 6 |
| 2020 | 3 |
| 2021 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Keypad
US-11086408-B2 · Aug 10, 2021 · US
Keypad
US-2021096654-A1 · Apr 1, 2021 · US
Portable terminal device and display control method
US-2020225835-A1 · Jul 16, 2020 · US
Portable terminal device and display control method
US-10684755-B2 · Jun 16, 2020 · US
Portable terminal device and display control method
US-10564828-B2 · Feb 18, 2020 · US
Converter for mobile unit and external keyboard having the same
US-2018239396-A1 · Aug 23, 2018 · US
Rollable and felxible input device
US-2018210559-A1 · Jul 26, 2018 · US
Mobile terminal having dual display unit and method of changing display screen using the same
US-10025469-B2 · Jul 17, 2018 · US
Protective cover
US-9983688-B2 · May 29, 2018 · US
Protective shroud for handheld device
US-9954993-B2 · Apr 24, 2018 · US
Mobile terminal
US-9880690-B2 · Jan 30, 2018 · US
Protective shroud for handheld device
US-2017223165-A1 · Aug 3, 2017 · US
Protective shroud for handheld device
US-2017207809-A1 · Jul 20, 2017 · US
Case for a hand held device
US-9685987-B2 · Jun 20, 2017 · US
Protective shroud for handheld device
US-9621214-B2 · Apr 11, 2017 · US
Method and device for connecting external equipment
US-2017060260-A1 · Mar 2, 2017 · US
Keyboard function in a modular portable electronic device
US-9544416-B2 · Jan 10, 2017 · US
Mobile terminal
US-2016378228-A1 · Dec 29, 2016 · US
Case for a hand held device
US-2016365887-A1 · Dec 15, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04M2250/18?
- CPC H04M2250/18 is the Cooperative Patent Classification code for “including more than one keyboard unit.”
- How many patents are filed under CPC H04M2250/18 (including more than one keyboard unit)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC H04M2250/18 growing?
- Publication counts under this code: 3 in 2020 vs 3 in 2021 (latest complete years).