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IPC Subgroup
C08F 4/64

Titanium, zirconium, hafnium, or compounds thereof

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 > together with refractory metals, iron group metals, platinum group metals, manganese, technetium, rhenium, or compounds thereof > Refractory metals or compounds thereof > Titanium, zirconium, hafnium, or compounds thereof

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

7 direct subcodes

Child Classifications

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  • C08F 4/642 Component covered by group with an organo-aluminium compound
  • C08F 4/643 Component covered by group with a metal or compound covered by group other than an organo-aluminium compound
  • C08F 4/645 Component covered by group with a metal or compound covered by group , not provided for in a single group of groups
  • C08F 4/646 Catalysts comprising at least two different metals, in metallic form or as compounds thereof, in addition to the component covered by group

Top Applicants

Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 14,262
  2. DOW GLOBAL TECHNOLOGIES US 12,486
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
  4. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
  5. CHINESE ACADEMY OF SCIENCES 6,993
  6. FUJIFILM JP 5,049
  7. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
  8. SHIN-ETSU CHEMICAL COMPANY JP 4,517
  9. BOREALIS AT 4,213
  10. ARKEMA FR 4,098