G01N 33/72
Involving blood pigments
Official title: involving blood pigments, e.g. haemoglobin, bilirubin {or other porphyrins; involving occult blood}
G01N33/72 (Involving blood pigments) appears on 1,017 US grants and 984 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,017
- Published applications
- 984
- Assignees
- 591
- Inventors
- 2,341
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 13 | 0 |
| 1981 | 25 | 0 |
| 1982 | 17 | 0 |
| 1983 | 17 | 0 |
| 1984 | 12 | 0 |
| 1985 | 9 | 0 |
| 1986 | 11 | 0 |
| 1987 | 14 | 0 |
| 1988 | 9 | 0 |
| 1989 | 20 | 0 |
| 1990 | 16 | 0 |
| 1991 | 10 | 0 |
| 1992 | 18 | 0 |
| 1993 | 19 | 0 |
| 1994 | 15 | 0 |
| 1995 | 18 | 0 |
| 1996 | 14 | 0 |
| 1997 | 20 | 0 |
| 1998 | 31 | 0 |
| 1999 | 28 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 1 |
| 2002 | 12 | 22 |
| 2003 | 19 | 30 |
| 2004 | 12 | 17 |
| 2005 | 14 | 29 |
| 2006 | 14 | 15 |
| 2007 | 15 | 35 |
| 2008 | 17 | 31 |
| 2009 | 22 | 35 |
| 2010 | 22 | 48 |
| 2011 | 22 | 36 |
| 2012 | 23 | 28 |
| 2013 | 33 | 39 |
| 2014 | 28 | 37 |
| 2015 | 23 | 44 |
| 2016 | 31 | 55 |
| 2017 | 16 | 39 |
| 2018 | 38 | 46 |
| 2019 | 27 | 71 |
| 2020 | 35 | 54 |
| 2021 | 30 | 54 |
| 2022 | 53 | 57 |
| 2023 | 22 | 44 |
| 2024 | 26 | 54 |
| 2025 | 33 | 33 |
| 2026 | 20 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vertical flow assay device and method for determination of hemoglobin concentration6 Oct 2026US 12,754,179 B2Google Inc.
- Occult blood detection film, and preparation method therefor and use thereof and occult blood detection kit6 Oct 2026US 12,754,190 B2Ankon Medical Technologies (Shanghai) Co., LTD.
- Dried reagent polysaccharide surface area stabilization6 Oct 2026US 12,754,191 B2Siemens Healthcare Diagnostics Inc.
- Methods for detecting aberrant results caused by incomplete delivery of a polyhapten reagent in immunoassays22 Sep 2026US 12,742,774 B2Siemens Healthcare Diagnostics Inc.
- Removable reagent pack for use in in-vitro diagnostic device and method for controlling the same22 Sep 2026US 12,742,790 B2Edan Instruments, Inc.
- High throughput optical assay for screening hemoglobin oxygen affinity modifying drug8 Oct 2026US 2026/0309621 A1
- Methods for Identifying Haemoglobin S or C in a Biological Sample and Kits Thereof8 Oct 2026US 2026/0309726 A1Indian Institute of Science
- Volume control test strip and methods of making and using the same1 Oct 2026US 2026/0298948 A1
- Stable hemoglobin protein composition24 Sep 2026US 2026/0285944 A1Prolong Pharmaceuticals, LLC
- Device and method to evaluate a fluid sample on a single-use multianalyte consumable17 Sep 2026US 2026/0276658 A1Siemens Healthcare Diagnostics Inc.
Most cited
By later US patents
- Modified electrode373US 4,595,479 AAjinomoto Co., Inc. · 1986
- Method and apparatus for improving the accuracy of noninvasive hematocrit measurements292US 6,606,509 B2Nellcor Puritan Bennett LLC · 2003
- Disposable article having a biosensor227US 6,713,660 B1The Procter & Gamble Company · 2004
- Method and apparatus for direct spectrophotometric measurements in unaltered whole blood221US 6,262,798 B1Board of Regents, The University of Texas System · 2001
- Diabetes management195US 6,421,633 B1Nokia Mobile Phones Ltd. · 2002