G01K 11/12 using changes in colour, translucency or reflectance
Full Title
Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 > using changes in colour, translucency or reflectance
Filing statistics
CPC G01K 11/12 belongs to the parent subclass G01K, which recorded 73,125 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,524 in 2013 to 7,638 in 2023 (+117%), peaking at 9,657 applications in 2020. The most active applicants in class G01 are CHINESE ACADEMY OF SCIENCES (21,460 applications), ROBERT BOSCH (17,801 applications) and SGCC(STATE GRID CORPORATION OF CHINA) (17,347 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
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- G01K 11/125 using changes in reflectance
- G01K 11/14 of inorganic materials
- G01K 11/16 of organic materials
- G01K 11/18 of materials which change translucency
Top Applicants
Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 21,460
- ROBERT BOSCH DE 17,801
- SGCC(STATE GRID CORPORATION OF CHINA) 17,347
- SAMSUNG ELECTRONICS COMPANY KR 13,192
- QUALCOMM US 9,900
- HALLIBURTON ENERGY SERVICES GROUP US 9,742
- PHILIPS ELECTRONICS NL 7,249
- MITSUBISHI ELECTRIC CORPORATION JP 6,503
- ZHEJIANG UNIVERSITY 6,414
- DENSO CORPORATION JP 6,382