Optical device and optical apparatus
US-2017371175-A1 · Dec 28, 2017 · 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 | H01L41/04 |
| Official title | — |
| Display label | Electricity (mapped technology topic) |
| Total patents | 186 |
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 | 18 |
| 2016 | 23 |
| 2017 | 27 |
| 2018 | 25 |
| 2019 | 20 |
| 2020 | 28 |
| 2021 | 20 |
| 2022 | 21 |
| 2023 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Quartz crystal resonator unit
US-2017366162-A1 · Dec 21, 2017 · US
Vibration generating device
US-9827594-B2 · Nov 28, 2017 · US
Elastic wave device and method for manufacturing the same
US-9831848-B2 · Nov 28, 2017 · US
Elastic wave device and method for manufacturing the same
US-2017331449-A1 · Nov 16, 2017 · US
System and method of analyzing athletic activity
US-9810591-B2 · Nov 7, 2017 · US
Baw resonator having thin seed layer
US-2017288122-A1 · Oct 5, 2017 · US
Piezoelectric energy harvesting array and method of manufacturing the same
US-9780698-B2 · Oct 3, 2017 · US
Method of manufacturing a mechanical resonating structure
US-9762202-B2 · Sep 12, 2017 · US
Coating device, system and method for sealant
US-9700914-B2 · Jul 11, 2017 · US
Detection device for detecting thickness of vacuum-evaporated film and vacuum evaporation apparatus
US-2017191156-A1 · Jul 6, 2017 · US
Linear ultrasonic motor and lens apparatus and image pickup apparatus using the same
US-9680399-B2 · Jun 13, 2017 · US
Method of manufacturing an ultrasound system
US-9636133-B2 · May 2, 2017 · US
Sensor using sensing mechanism having combined static charge and field effect transistor
US-9634153-B2 · Apr 25, 2017 · US
Piezoelectric element and piezoelectric element applied device
US-2017062693-A1 · Mar 2, 2017 · US
Acoustic blood separation processes and devices
US-2017049949-A1 · Feb 23, 2017 · US
Vibration driven actuator, apparatus, and optical apparatus
US-2017038554-A1 · Feb 9, 2017 · US
Method of controlled pulse driving of a stacked PZT bender bar for dipole acoustic radiation
US-9541657-B2 · Jan 10, 2017 · US
Piezoelectric device
US-9537079-B2 · Jan 3, 2017 · US
Vibration-type actuator, image pickup apparatus, and stage
US-9530953-B2 · Dec 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01L41/04?
- CPC H01L41/04 is the Cooperative Patent Classification code for “Electricity.”
- How many patents are filed under CPC H01L41/04 (Electricity)?
- Our database includes 186 publications tagged with this CPC code.
- Is patent activity under CPC H01L41/04 growing?
- Publication counts under this code: 21 in 2022 vs 4 in 2023 (latest complete years).