IPC Subgroup
C08F 4/44 selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
Introduced: July 1974
Last revised: January 2006
Full Title
Polymerisation catalysts > Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors > selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- Subclass:
- MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6 direct subcodes
Child Classifications
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- C08F 4/46 selected from alkali metals
- C08F 4/5 selected from alkaline earth metals, zinc, cadmium, mercury, copper, or silver
- C08F 4/52 selected from boron, aluminium, gallium, indium, thallium, or rare earths
- C08F 4/54 together with other compounds thereof
- C08F 4/58 together with silicon, germanium, tin, lead, antimony, bismuth, or compounds thereof
- C08F 4/6 together with refractory metals, iron group metals, platinum group metals, manganese, technetium, rhenium, or compounds thereof
Top Applicants
Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 14,262
- DOW GLOBAL TECHNOLOGIES US 12,486
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
- CHINESE ACADEMY OF SCIENCES 6,993
- FUJIFILM JP 5,049
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
- SHIN-ETSU CHEMICAL COMPANY JP 4,517
- BOREALIS AT 4,213
- ARKEMA FR 4,098