B01J 2220/49
Materials comprising an indicator
Official title: Materials comprising an indicator, e.g. colour indicator, pH-indicator
B01J2220/49 (Materials comprising an indicator) appears on 101 US grants and 97 published applications in this corpus.
Search patents in B01J- Granted patents
- 101
- Published applications
- 97
- Assignees
- 85
- Inventors
- 253
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 2 | 4 |
| 2006 | 0 | 2 |
| 2007 | 1 | 4 |
| 2008 | 0 | 3 |
| 2009 | 3 | 2 |
| 2010 | 2 | 5 |
| 2011 | 3 | 6 |
| 2012 | 4 | 6 |
| 2013 | 7 | 5 |
| 2014 | 3 | 4 |
| 2015 | 4 | 2 |
| 2016 | 2 | 3 |
| 2017 | 1 | 5 |
| 2018 | 4 | 4 |
| 2019 | 3 | 8 |
| 2020 | 4 | 4 |
| 2021 | 9 | 6 |
| 2022 | 1 | 4 |
| 2023 | 3 | 2 |
| 2024 | 7 | 5 |
| 2025 | 1 | 3 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Molecularly imprinted fluorescent polymers for direct detection of glyphosate, its degradation products, and metabolites21 Apr 2026US 12,605,695 B2Bundesrepublik Deutschland, vertreten durch den Bundesminister für Wirtschaft und Energie, dieser vertreten durch den Präsidenten der Bundesanstalt für Materialforschung und -prüfung, (BAM)
- Water-absorbing material and uses thereof13 Jan 2026US 12,521,466 B27905122 Canada Inc.
- Colorimetric sensors and methods of manufacturing the same25 Feb 2025US 12,233,420 B2DrinkSavvy, Inc.
- Compositions and methods to remove ammonia in freshwater and saltwater fish storage systems17 Dec 2024US 12,168,619 B2University of South Florida
- Neutralizing absorbent for decontaminating leaked chemical substance, method of preparing the same, and neutralizer filled with the same3 Dec 2024US 12,157,105 B2GTScien Co., Ltd.
- Color-changing ph-indicating silica gel and preparation method thereof20 Aug 2026US 2026/0241364 A1Qingdao Meigao Group Co., Ltd.
- Nonwoven fabric web with oil sensitive, particulate absorbent of organics13 Aug 2026US 2026/0234847 A1Imbibitive Technologies Corp.
- Medium for quantitatively removing water from a gas stream containing sulphur and/or sulphur-containing compounds, device for this purpose, and use of said medium23 Jul 2026US 2026/0208160 A1Elementar Analysensysteme GmbH
- Water-Absorbing Material and Uses Thereof19 Feb 2026US 2026/0048169 A17905122 Canada Inc.
- Absorbent for the quantitative removal of carbon dioxide from a gas stream and use thereof6 Nov 2025US 2025/0339813 A1Elementar Analysensysteme GmbH
Most cited
By later US patents
- Process for purifying proteins and compounds useful in such process90US 4,569,794 AEli Lilly and Company · 1986
- Affinity chromatography using dried calcium alginate-magnetite separation media in a magnetically stabilized fluidized bed71US 4,675,113 AUniversity Patents, Inc. · 1987
- Composite materials comprising deformable xerogel within the pores of particulate rigid supports useful in chromatography57US 4,335,017 AUnited Kingdom Atomic Energy Authority · 1982
- Method for attaching microspheres to a substrate54US 5,652,059 ABar-Ilan University · 1997
- Adsorbents, process for producing the same, and applications thereof47US 6,890,373 B2Bridgestone Corporation · 2005