CPC Subgroup Additional Only
C09K 2205/40 Replacement mixtures
Full Title
Aspects relating to compounds used in compression type refrigeration systems > Replacement mixtures
8 direct subcodes
Child Classifications
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- C09K 2205/41 Type R11
- C09K 2205/42 Type R12
- C09K 2205/43 Type R22
- C09K 2205/44 Type R13B1
- C09K 2205/45 Type R500
- C09K 2205/46 Type R501
- C09K 2205/47 Type R502
- C09K 2205/48 Type R503
Top Applicants
Top 10 applicants by patent filingsfor class C09, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 7,954
- HALLIBURTON ENERGY SERVICES GROUP US 6,584
- NITTO DENKO CORPORATION JP 6,500
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
- DOW GLOBAL TECHNOLOGIES US 6,324
- FUJIFILM JP 5,832
- MERCK PATENT DE 5,481
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
- SAMSUNG DISPLAY KR 5,105
- NITTO DENKO CORPORATION 3,584