H01S DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
Description
H01S covers laser devices and stimulated emission sources operating across electromagnetic spectrum ranges from ultraviolet through microwave frequencies. The subclass encompasses laser construction (optical cavities, active media, pumping mechanisms), laser types (solid-state, gas, semiconductor, fiber, dye lasers), and masers and related devices operating at non-optical wavelengths. Related amplification and generation of electromagnetic radiation through stimulated emission principles fall within this classification, while specific laser applications in materials processing, measurement, or communications are typically addressed in specialized classes (B, G, H sections).
8 direct subcodes
Child Classifications
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- H01S 1/00 Masers, i.e. devices using stimulated emission of electromagnetic radiation in the microwave range
- H01S 2301/00 Functional characteristics
- H01S 2302/00 Amplification / lasing wavelength
- H01S 2303/00 Pumping wavelength
- H01S 2304/00 Special growth methods for semiconductor lasers
- H01S 3/00 Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range (semiconductors lasers H01S5/00)
- H01S 4/00 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
- H01S 5/00 Semiconductor lasers (superluminescent diodes H10H20/00)
Top Applicants
Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 37,897
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
- APPLIED MATERIALS US 21,640
- LG ENERGY SOLUTION KR 20,770
- LG CHEM KR 19,835
- TOKYO ELECTRON JP 18,519
- ROBERT BOSCH DE 14,595
- INTEL CORPORATION US 13,580
- MURATA MANUFACTURING COMPANY JP 12,151
- SAMSUNG SDI COMPANY KR 12,080