C01D COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM (metal hydrides C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts of peroxyacids C01B15/00; sulfides C01B17/22; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; ; metal amides C01B21/092; nitrites C01B21/50; phosphides C01B21/50; ; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; cyanides C01C3/08; salts of cyanic acid C01C3/14; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
Description
C01D covers the synthesis, preparation, and chemical composition of inorganic compounds containing the alkali metals (lithium, sodium, potassium, rubidium, caesium, and francium). This includes hydroxides, halides, carbonates, sulfates, nitrates, and other salts of these metals, as well as their oxides and peroxides. The classification encompasses both industrial-scale production methods and laboratory synthesis routes for these compounds. Adjacent classes cover related materials such as compounds of alkaline earth metals (C01E) and general inorganic chemistry outside specific metal families (C01B).
8 direct subcodes
Child Classifications
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- C01D 1/00 Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D 13/00 Compounds of sodium or potassium not provided for elsewhere
- C01D 15/00 Lithium compounds
- C01D 17/00 Rubidium, caesium or francium compounds
- C01D 3/00 Halides of sodium, potassium or alkali metals in general
- C01D 5/00 Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D 7/00 Carbonates of sodium, potassium or alkali metals in general
- C01D 9/00 Nitrates of sodium, potassium or alkali metals in general
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