G01N 33/53
Immunoassay
Official title: Immunoassay; Biospecific binding assay; Materials therefor
G01N33/53 (Immunoassay) appears on 42,084 US grants and 65,080 published applications in this corpus.
Search patents in G01N- Granted patents
- 42,084
- Published applications
- 65,080
- Assignees
- 15,730
- Inventors
- 102,832
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 73 | 0 |
| 1977 | 58 | 0 |
| 1978 | 75 | 0 |
| 1979 | 77 | 0 |
| 1980 | 139 | 0 |
| 1981 | 151 | 0 |
| 1982 | 121 | 0 |
| 1983 | 91 | 0 |
| 1984 | 155 | 0 |
| 1985 | 144 | 0 |
| 1986 | 166 | 0 |
| 1987 | 263 | 0 |
| 1988 | 256 | 0 |
| 1989 | 373 | 0 |
| 1990 | 296 | 0 |
| 1991 | 306 | 0 |
| 1992 | 409 | 0 |
| 1993 | 422 | 0 |
| 1994 | 397 | 0 |
| 1995 | 385 | 0 |
| 1996 | 474 | 0 |
| 1997 | 658 | 0 |
| 1998 | 854 | 0 |
| 1999 | 782 | 0 |
| 2000 | 685 | 0 |
| 2001 | 815 | 247 |
| 2002 | 673 | 1385 |
| 2003 | 667 | 3107 |
| 2004 | 646 | 1972 |
| 2005 | 585 | 2050 |
| 2006 | 788 | 2259 |
| 2007 | 925 | 2128 |
| 2008 | 991 | 1974 |
| 2009 | 930 | 2487 |
| 2010 | 1331 | 2817 |
| 2011 | 1313 | 2611 |
| 2012 | 1284 | 2432 |
| 2013 | 1530 | 2479 |
| 2014 | 1617 | 3097 |
| 2015 | 1641 | 3010 |
| 2016 | 1690 | 2987 |
| 2017 | 1884 | 2951 |
| 2018 | 1890 | 3014 |
| 2019 | 2014 | 3076 |
| 2020 | 2013 | 2983 |
| 2021 | 1773 | 3157 |
| 2022 | 1677 | 3034 |
| 2023 | 1528 | 2932 |
| 2024 | 1452 | 2862 |
| 2025 | 1570 | 2346 |
| 2026 | 1047 | 1683 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 33/543With an insoluble carrier for immobilising immunochemicals13,939
- G01N 33/575For cancer10,827
- G01N 33/569For microorganisms9,167
- G01N 33/531Production of immunochemical test materials3,268
- G01N 33/573For enzymes or isoenzymes2,454
- G01N 33/536With immune complex formed in liquid phase2,279
- G01N 33/5308For analytes not provided for elsewhere1,936
- G01N 33/566Using specific carrier or receptor proteins as ligand binding reagents where possible1,913
All 16 subgroupsShow fewer
- G01N 33/564For pre-existing immune complex or autoimmune disease , i.e. systemic lupus erythematosus1,651
- G01N 33/5302Apparatus specially adapted for immunological test procedures997
- G01N 33/5306Improving reaction conditions645
- G01N 33/577Involving monoclonal antibodies binding reaction mechanisms characterised by the use of monoclonal510
- G01N 33/576For hepatitis463
- G01N 33/558Using diffusion or migration of antigen or antibody310
- G01N 33/557Using kinetic measurement, i.e. time rate of progress of an antigen-antibody interaction228
- G01N 33/563Involving antibody fragments142
Recent patents
- Microstructure and molecular detection method6 Oct 2026US 12,752,270 B2Korea University Research and Business Foundation
- Systems and methods for determining presence and/or characteristics of target analytes in a sample6 Oct 2026US 12,752,273 B2Conservation X Labs, Inc
- Polymeric forms of H-NOX proteins6 Oct 2026US 12,753,222 B2Omniox.Inc.
- Monoclonal antibody used for diagnosis and early onset of prostate cancer6 Oct 2026US 12,753,244 B2Taipei Medical University
- Luciferase linked immunosorbent assay6 Oct 2026US 12,753,245 B2Institut Pasteur
- Method to induce exfoliation of cells and/or tissue fragments for enhanced cytopathologic cell collection8 Oct 2026US 2026/0306077 A1Adenocyte Ltd.
- Compositions, Kits, and Methods Comprising Bioidentical D BHB With Optional Vitamin B6 for Neurological Wellness, Mood Stability, and Medication Taper Support8 Oct 2026US 2026/0306430 A1Global Ketone Limited
- Inverse agonists of rar related orphan receptors (rors)8 Oct 2026US 2026/0306484 A111949098 CANADA INC. (NUREDCO) c/o Jean I. TCHERVENKOV
- Long-Lived Gadolinium Based Tumor Targeted Imaging and Therapy Agents8 Oct 2026US 2026/0306634 A1Wisconsin Alumni Research Foundation
- Anti-cmet antibody, antibody-drug conjugate, and preparation method therefor and use thereof8 Oct 2026US 2026/0306651 A1MediLink Therapeutics (Suzhou) Co., Ltd.
Most cited
By later US patents
- Process for producing an electrochemical biosensor1,891US 6,103,033 ATheraSense, Inc. · 2000
- Method of using a small volume in vitro analyte sensor1,793US 6,120,676 ATheraSense, Inc. · 2000
- Small volume in vitro analyte sensor1,656US 6,143,164 AE. Heller & Company · 2000
- Fluorescent silica-based nanoparticles1,448US 8,298,677 B2Cornell Research Foundation, Inc. · 2012
- Immunometric assays using monoclonal antibodies1,218US 4,376,110 AHybritech Incorporated · 1983