C09B 67/0096
Purification
Official title: {Purification; Precipitation; Filtration}
C09B67/0096 (Purification) appears on 261 US grants and 186 published applications in this corpus.
Search patents in C09B- Granted patents
- 261
- Published applications
- 186
- Assignees
- 152
- Inventors
- 681
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 0 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 9 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 2 |
| 2002 | 4 | 3 |
| 2003 | 5 | 6 |
| 2004 | 2 | 3 |
| 2005 | 3 | 5 |
| 2006 | 3 | 6 |
| 2007 | 5 | 10 |
| 2008 | 5 | 7 |
| 2009 | 7 | 19 |
| 2010 | 6 | 13 |
| 2011 | 10 | 10 |
| 2012 | 8 | 1 |
| 2013 | 4 | 7 |
| 2014 | 4 | 4 |
| 2015 | 2 | 1 |
| 2016 | 7 | 5 |
| 2017 | 8 | 7 |
| 2018 | 5 | 11 |
| 2019 | 6 | 5 |
| 2020 | 7 | 15 |
| 2021 | 9 | 12 |
| 2022 | 7 | 10 |
| 2023 | 6 | 7 |
| 2024 | 12 | 8 |
| 2025 | 5 | 6 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Colour-stable preparation of a magnesium chlorophyllin alkali metal salt or alkali earth metal salt from natural sources of chlorophyll4 Aug 2026US 12,698,397 B2Givaudan SA
- Process for synthesizing triarylmethane sulfone compounds7 Apr 2026US 12,595,228 B2Provepharm Life Solutions
- Fabrication of fluorescent nanoparticles and their conjugates for in vitro and in vivo diagnostics17 Feb 2026US 12,553,888 B2Auiset Biotechnology Co. Ltd.
- Reactive disperse yellow dye for supercritical CO2 dyeing and methods of production and use thereof20 Jan 2026US 12,528,943 B2Dalian Polytechnic University
- Method for tracing subterranean formations with oil-soluble organic molecular tracers and extracting them of from oil phases14 Oct 2025US 12,440,821 B2Saudi Arabian Oil Company
- Process of preparation of residue free solvent blue 67 dye20 Aug 2026US 2026/0242606 A1Rathi Dye Chem (P) Ltd
- Fabrication of fluorescent nanoparticles and their conjugates for in vitro and in vivo diagnostics19 Mar 2026US 2026/0079155 A1
- Method for preparing high-purity gardenia yellow pigment12 Mar 2026US 2026/0071073 A1Henan Zhongda Hengyuan Biotechnology Stock Co., Ltd.
- Aqueous ink, ink cartridge, ink jet recording method, aqueous pigment dispersion, method for producing aqueous pigment dispersion, and method for producing aqueous ink4 Dec 2025US 2025/0368842 A1Canon Kabushiki Kaisha
- Methods of synthesis and/or purification of diaminophenothiazinium compounds10 Jul 2025US 2025/0222006 A1WisTa Laboratories Ltd.
Most cited
By later US patents
- Process for preparing diaminophenothiazinium compounds687US 8,765,942 B2Provence Technologies · 2014
- Quinacridone nanoscale pigment particles96US 7,427,323 B1Xerox Corporation · 2008
- Process for isolation, purification, and recrystallization of lutein from saponified marigold oleoresin and uses thereof92US 5,382,714 AThe Catholic University of America · 1995
- Self-centering drill bit with pilot tip73US 4,968,193 ABlack & Decker Inc. · 1990
- Process for the preparation of stable aqueous solutions of water-soluble reactive dyes by membrane separation69US 4,523,924 ACiba-Geigy Corporation · 1985