G01N 33/53 Immunoassay; Biospecific binding assay; Materials therefor
Full Title
Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 > Biological material, e.g. blood, urine (G01N33/02, G01N33/26, G01N33/44, G01N33/46 take precedence); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M11/02) > Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing (measuring or testing processes involving enzymes or microorganisms, compositions or test papers therefor; processes for forming such compositions, condition responsive control in microbiological or enzymological processes C12Q) > Immunoassay; Biospecific binding assay; Materials therefor
Filing statistics
CPC G01N 33/53 belongs to the parent subclass G01N, which recorded 1,076,242 patent applications worldwide between 2013 and 2023. Annual filings grew from 58,557 in 2013 to 108,067 in 2023 (+85%), peaking at 123,338 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
16 direct subcodes
Child Classifications
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- G01N 33/531 Production of immunochemical test materials
- G01N 33/536 with immune complex formed in liquid phase
- G01N 33/543 with an insoluble carrier for immobilising immunochemicals
- G01N 33/557 using kinetic measurement, i.e. time rate of progress of an antigen-antibody interaction
- G01N 33/558 using diffusion or migration of antigen or antibody
- G01N 33/563 involving antibody fragments
- G01N 33/564 for pre-existing immune complex or autoimmune disease
- G01N 33/566 using specific carrier or receptor proteins as ligand binding reagents
- G01N 33/569 for microorganisms, e.g. protozoa, bacteria, viruses
- G01N 33/573 for enzymes or isoenzymes
- G01N 33/575 for cancer
- G01N 33/576 for hepatitis
- G01N 33/577 involving monoclonal antibodies
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