Semiconductor device
US-2018374844-A1 · Dec 27, 2018 · US
Electricity
Electricity · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01L29/423 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 257 |
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 | 10 |
| 2016 | 24 |
| 2017 | 21 |
| 2018 | 29 |
| 2019 | 39 |
| 2020 | 50 |
| 2021 | 22 |
| 2022 | 18 |
| 2023 | 22 |
| 2024 | 19 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thin-film transistor, liquid crystal display panel, and thin-film transistor manufacturing method
US-10121900-B2 · Nov 6, 2018 · US
Method for forming semiconductor structure
US-2018122693-A1 · May 3, 2018 · US
Semiconductor device and manufacturing method thereof
US-2018102431-A1 · Apr 12, 2018 · US
Semiconductor device
US-9899374-B2 · Feb 20, 2018 · US
Field effect transistor and method of manufacture
US-9847415-B2 · Dec 19, 2017 · US
Direct tunnel barrier control gates in a two-dimensional electronic system
US-9842921-B2 · Dec 12, 2017 · US
Trenched MOS Gate Controlled Rectifier
US-2017288065-A1 · Oct 5, 2017 · US
Semiconductor device
US-9761681-B2 · Sep 12, 2017 · US
Semiconductor device
US-2017256536-A1 · Sep 7, 2017 · US
Field effect transistor
US-9716185-B2 · Jul 25, 2017 · US
Flexible substrate, flexible display panel and flexible display device
US-9685459-B2 · Jun 20, 2017 · US
Semiconductor device production method and semiconductor device
US-9666688-B2 · May 30, 2017 · US
Vertical bipolar junction transistor and manufacturing method thereof
US-9666700-B2 · May 30, 2017 · US
Semiconductor device
US-2017148785-A1 · May 25, 2017 · US
Array substrate and manufacturing method thereof, touch display device
US-9652099-B2 · May 16, 2017 · US
Nanosheet capacitor
US-9653480-B1 · May 16, 2017 · US
Layout for LDMOS
US-9647110-B2 · May 9, 2017 · US
Method of forming a gate shield in an ED-CMOS transistor and a base of a bipolar transistor using BICMOS technologies
US-9633995-B2 · Apr 25, 2017 · US
BICMOS device having commonly defined gate shield in an ED-CMOS transistor and base in a bipolar transistor
US-9633994-B2 · Apr 25, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L29/423?
- CPC H01L29/423 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L29/423 (Electricity)?
- Our database includes 257 publications tagged with this CPC code.
- Is patent activity under CPC H01L29/423 growing?
- Publication counts under this code: 19 in 2024 vs 3 in 2025 (latest complete years).