Electro-optical apparatus
US-11831128-B2 · Nov 28, 2023 · US
Devices using stimulated emission of electromagnetic radiation in wave ranges other than those covered by groups H01S1/00, H01S3/00 or H01S5/00, e.g. phonon masers, X-ray lasers or gamma-ray lasers
Devices using stimulated emission of electromagnetic radiation in wave ranges other than those covered by groups H01S1/00, H01S3/00 or H01S5/00, e.g. phonon masers, X-ray lasers or gamma-ray lasers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01S4/00 |
| Official title | Devices using stimulated emission of electromagnetic radiation in wave ranges other than those covered by groups H01S1/00, H01S3/00 or H01S5/00, e.g. phonon masers, X-ray lasers or gamma-ray lasers |
| Display label | Devices using stimulated emission of electromagnetic radiation in wave ranges other than those covered by groups H01S1/00, H01S3/00 or H01S5/00, e.g. phonon masers, X-ray lasers or gamma-ray lasers |
| Total patents | 64 |
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 | 4 |
| 2016 | 6 |
| 2017 | 12 |
| 2018 | 14 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 8 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nanopatterned electron beams for temporal coherence and deterministic phase control of x-ray free-electron lasers
US-11798706-B2 · Oct 24, 2023 · US
Reducing speckle in an excimer light source
US-11686951-B2 · Jun 27, 2023 · US
Laser Module for Optical Data Communication System
US-2022407606-A1 · Dec 22, 2022 · US
Laser module for optical data communication system
US-11424830-B2 · Aug 23, 2022 · US
Electro-Optical Apparatus
US-2022181847-A1 · Jun 9, 2022 · US
Magnetic sensor, biological cell sensing device, and diagnostic device
US-11350840-B2 · Jun 7, 2022 · US
Method and apparatus for synchronizing charged particle pulses with light pulses
US-2021384001-A1 · Dec 9, 2021 · US
Nanopatterned electron beams for temporal coherence and deterministic phase control of x-ray free-electron lasers
US-2021343444-A1 · Nov 4, 2021 · US
Electron diffraction intensity from single crystal silicon in a photoinjector
US-2021341399-A1 · Nov 4, 2021 · US
Terahertz laser device based on zinc oxide phonon vibration optically excited at room temperature
US-11133641-B1 · Sep 28, 2021 · US
Reducing speckle in an excimer light source
US-2021239998-A1 · Aug 5, 2021 · US
Reducing speckle in an excimer light source
US-11054665-B2 · Jul 6, 2021 · US
Generation of VUV, EUV, and X-ray light using VUV-UV-VIS lasers
US-10985523-B2 · Apr 20, 2021 · US
Magnetic sensor, biological cell sensing device, and diagnostic device
US-2021038109-A1 · Feb 11, 2021 · US
Laser Module for Optical Data Communication System
US-2020403703-A1 · Dec 24, 2020 · US
Magnetic sensor, biological cell sensing device, and diagnostic device
US-10849527-B2 · Dec 1, 2020 · US
Laser module for optical data communication system
US-10771160-B2 · Sep 8, 2020 · US
CW maser with electromagnetic resonant circuit
US-10707637-B2 · Jul 7, 2020 · US
Generation of VUV, EUV, and X-ray Light Using VUV-UV-VIS Lasers
US-2019372300-A1 · Dec 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01S4/00?
- CPC H01S4/00 is the Cooperative Patent Classification code for “Devices using stimulated emission of electromagnetic radiation in wave ranges other than those covered by groups H01S1/00, H01S3/00 or H01S5/00, e.g. phonon masers, X-ray lasers or gamma-ray lasers.”
- How many patents are filed under CPC H01S4/00 (Devices using stimulated emission of electromagnetic radiation in wave ranges other than those covered by groups H01S1/00, H01S3/00 or H01S5/00, e.g. phonon masers, X-ray lasers or gamma-ray lasers)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC H01S4/00 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).