C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;
Description
C01B covers the production, purification, and chemical processing of non-metallic elements and their inorganic compounds, including halogens, oxygen, nitrogen, sulfur, phosphorus, carbon, and silicon, along with their oxides, halides, sulfides, and other derivatives. This classification encompasses industrial chemical processes such as synthesis, separation, and refining methods specific to these elements and their compounds. It excludes metallic elements and their compounds (covered by C01C), as well as organic compounds derived from non-metallic elements (classified elsewhere in organic chemistry).
Filing statistics
CPC subclass C01B recorded 208,069 patent applications worldwide between 2013 and 2023. Annual filings grew from 11,850 in 2013 to 24,181 in 2023 (+104%), peaking at 24,407 applications in 2022. The most active applicants in class C01 are CHINESE ACADEMY OF SCIENCES (4,293 applications), LG CHEM (3,317 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (2,219 applications).
Source: EPO PATSTAT, worldwide filings
24 direct subcodes
Child Classifications
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- C01B 11/00 Oxides or oxyacids of halogens; Salts thereof
- C01B 13/00 Oxygen; Ozone; Oxides or hydroxides in general
- C01B 15/00 Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B 17/00 Sulfur; Compounds thereof
- C01B 19/00 Selenium; Tellurium; Compounds thereof (phosphorus compounds C01B25/14)
- C01B 21/00 Nitrogen; Compounds thereof
- C01B 2201/00 Preparation of ozone by electrical discharge
- C01B 2202/00 Structure or properties of carbon nanotubes
- C01B 2203/00 Integrated processes for the production of hydrogen or synthesis gas
- C01B 2204/00 Structure or properties of graphene
- C01B 2210/00 Purification or separation of specific gases
- C01B 23/00 Noble gases; Compounds thereof (liquefying F25J )
- C01B 25/00 Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16)
- C01B 3/00 Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen (production of water-gas or synthesis gas from solid carbonaceous material C10J)
- C01B 32/00 Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48)
- C01B 33/00 Silicon; Compounds thereof ( C01B21/00, C01B23/00 take precedence; persilicates C01B15/14; carbides C01B32/956)
- C01B 35/00 Boron; Compounds thereof (monoborane, diborane, metal borohydrides or addition complexes thereof C01B6/00; perborates C01B15/12; binary compounds with nitrogen C01B21/06; ; phosphides C01B25/08; carbides C01B32/991; alloys containing boron C22)
- C01B 37/00 Compounds having molecular sieve properties but not having base-exchange properties
- C01B 39/00 Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination (treatment to modify the sorption properties, e.g. shaping using a binder, B01J20/10; treatment to modify the catalytic properties, e.g. combination of treatments to make the zeolites appropriate to their use as a catalyst, B01J29/04; treatment to improve the ion-exchange properties B01J39/14)
- C01B 4/00 Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD
Top Applicants
Top 10 applicants by patent filingsfor class C01, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 4,293
- LG CHEM KR 3,317
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,219
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,154
- OMYA INTERNATIONAL CH 1,524
- PANASONIC INTELLECTUAL PROPERTY JP 1,362
- SAUDI ARABIAN OIL COMPANY SA 1,298
- SUMITOMO METAL MINING COMPANY JP 1,286
- CENTRAL SOUTH UNIVERSITY 1,243
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,238