CPC Main Group
C12P 17/00 Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms (C12P13/04 - C12P13/24 take precedence)
Filing statistics
CPC C12P 17/00 belongs to the parent subclass C12P, which recorded 131,947 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,870 in 2013 to 11,919 in 2023 (+10%), peaking at 13,135 applications in 2016. The most active applicants in class C12 are HARVARD UNIVERSITY (8,321 applications), CHINESE ACADEMY OF SCIENCES (7,486 applications) and UNIVERSITY OF CALIFORNIA (7,320 applications).
Source: EPO PATSTAT, worldwide filings
5 direct subcodes
Child Classifications
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- C12P 17/02 Oxygen as only ring hetero atoms
- C12P 17/10 Nitrogen as only ring hetero atom
- C12P 17/14 Nitrogen or oxygen as hetero atom and at least one other diverse hetero ring atom in the same ring
- C12P 17/16 containing two or more hetero rings
- C12P 17/18 containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin
Top Applicants
Top 10 applicants by patent filingsfor class C12, 2013–2023, worldwide · Source: EPO PATSTAT
- HARVARD UNIVERSITY US 8,321
- CHINESE ACADEMY OF SCIENCES 7,486
- UNIVERSITY OF CALIFORNIA US 7,320
- REGENERON PHARMACEUTICALS US 5,003
- INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE) FR 4,292
- UNIVERSITY OF PENNSYLVANIA US 4,213
- CNRS (CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE) FR 4,113
- JIANGNAN UNIVERSITY 3,961
- ROCHE CH 3,792
- ILLUMINA US 3,692