Polyanhydrides

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing oxygen or oxygen and carbon, not provided for in groups > Polyanhydrides

CPC:

Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing oxygen or oxygen and carbon, not provided for in groups C08G2/00 - C08G65/00 > Polyanhydrides

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class C08,2013–2023, worldwide · Source: EPO PATSTAT

LG CHEM KR 15,432
DOW GLOBAL TECHNOLOGIES US 14,214
BASF (BADISCHE ANILIN & SODA FABRIK) DE 11,155
3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,455
FUJIFILM JP 6,178
CHINESE ACADEMY OF SCIENCES 5,569
SHIN-ETSU CHEMICAL COMPANY JP 5,506
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,443
TORAY INDUSTRIES JP 4,635
NITTO DENKO CORPORATION JP 4,620