G01N 27/44795
Isoelectric focusing
Official title: {Isoelectric focusing}
G01N27/44795 (Isoelectric focusing) appears on 258 US grants and 287 published applications in this corpus.
Search patents in G01N- Granted patents
- 258
- Published applications
- 287
- Assignees
- 143
- Inventors
- 479
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 0 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 6 |
| 2002 | 7 | 14 |
| 2003 | 9 | 15 |
| 2004 | 8 | 21 |
| 2005 | 7 | 21 |
| 2006 | 5 | 10 |
| 2007 | 5 | 7 |
| 2008 | 5 | 13 |
| 2009 | 6 | 11 |
| 2010 | 6 | 12 |
| 2011 | 12 | 14 |
| 2012 | 7 | 8 |
| 2013 | 5 | 11 |
| 2014 | 8 | 13 |
| 2015 | 5 | 6 |
| 2016 | 12 | 9 |
| 2017 | 7 | 11 |
| 2018 | 8 | 10 |
| 2019 | 11 | 12 |
| 2020 | 14 | 11 |
| 2021 | 4 | 9 |
| 2022 | 6 | 5 |
| 2023 | 7 | 18 |
| 2024 | 5 | 10 |
| 2025 | 10 | 8 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and compositions for electophoretic separations6 Oct 2026US 12,754,165 B2DH Techologies Development Pte. Ltd.
- Method and apparatus for detecting particles, like biological macromolecules or nanoparticles21 Apr 2026US 12,607,599 B2Max-Planck-Gesellschaft zuf Foerderung der Wissenschaften e. V.
- Isoelectric focusing devices and fixtures7 Apr 2026US 12,594,557 B2Intabio, Inc.
- Sample analysis method, capillary electrophoresis solution, and sample analysis kit27 Jan 2026US 12,535,461 B2ARKRAY, Inc.
- Scalable high-throughput isoelectric fractionation platform for extracellular nanocarriers16 Dec 2025US 12,498,349 B2University of Notre Dame du Lac
- Isoelectric focusing sample matrix18 Jun 2026US 2026/0168959 A1Bristol-Myers Squibb Company
- Isotachophoresis for Purification of Nucleic Acids29 Jan 2026US 2026/0028614 A1Purigen Biosystems, Inc.
- Analysis method by electrophoresis20 Nov 2025US 2025/0354956 A1ACE BioAnalysis Inc.
- Systems and methods for fractionation and collection of analytes in a sample6 Nov 2025US 2025/0339855 A1ProteinSimple
- Liquid chromatography- mass spectrometry (lc-ms) methods for analyzing ampholyte lot variation7 Aug 2025US 2025/0251362 A1Regeneron Pharmaceuticals, Inc.
Most cited
By later US patents
- Carrier ampholytes of high pH range95US 7,022,214 B2Bio-Rad Laboratories, Inc. · 2006
- Automated system for two-dimensional electrophoresis85US 5,993,627 ALarge Scale Biology Corporation · 1999
- Protein separation via multidimensional electrophoresis81US 6,537,432 B1Target Discovery, Inc. · 2003
- Isoelectric focusing method67US 4,204,929 AUniversity Patents, Inc. · 1980
- Electrophoresis apparatus and method66US 6,013,165 ALynx Therapeutics, Inc. · 2000