C10H PRODUCTION OF ACETYLENE BY WET METHODS
Description
C10H covers chemical processes for acetylene production using wet methods, primarily through the reaction of calcium carbide with water. This subclass encompasses the equipment, reaction conditions, and purification techniques essential to acetylene generation via hydrolysis. Typical inventions include carbide reactors, acetylene scrubbers, and systems for removing impurities such as phosphine and hydrogen sulfide from the product gas. This classification excludes dry methods of acetylene production and other synthesis routes for acetylene (covered elsewhere in C10).
Filing statistics
CPC subclass C10H recorded 171 patent applications worldwide between 2013 and 2023. Annual filings grew from 8 in 2013 to 21 in 2023 (+163%), peaking at 30 applications in 2021. The most active applicants in class C10 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (5,831 applications), SAUDI ARABIAN OIL COMPANY (2,918 applications) and IFPEN (IFP ENERGIES NOUVELLES) (2,305 applications).
Source: EPO PATSTAT, worldwide filings
11 direct subcodes
Child Classifications
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- C10H 1/00 Acetylene gas generators with dropwise, gravity, non-automatic water feed (valves, cocks F16K)
- C10H 11/00 Acetylene gas generators with submersion of the carbide in water
- C10H 13/00 Acetylene gas generation with combined dipping and drop-by-drop system
- C10H 15/00 Acetylene gas generators with carbide feed, with or without regulation by the gas pressure
- C10H 17/00 High-pressure acetylene gas generators
- C10H 19/00 Other acetylene gas generators
- C10H 21/00 Details of acetylene generators; Accessory equipment for, or features of, the wet production of acetylene
- C10H 3/00 Acetylene gas generators with automatic water feed regulation by means independent of the gas-holder
- C10H 5/00 Acetylene gas generators with automatic water feed regulation by the gas-holder
- C10H 7/00 Acetylene gas generators with water feed by Kipp's principle
- C10H 9/00 Acetylene gas generators according to Dobereiner's principle with fixed carbide bell
Top Applicants
Top 10 applicants by patent filingsfor class C10, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,831
- SAUDI ARABIAN OIL COMPANY SA 2,918
- IFPEN (IFP ENERGIES NOUVELLES) FR 2,305
- EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 2,282
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,268
- SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 2,124
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,487
- CHEVRON CORPORATION US 1,400
- PETROCHINA COMPANY 1,372
- LUBRIZOL CORPORATION US 1,324