B01D 9/00
Crystallisation
Official title: Crystallisation (crystallisation directly from the vapour phase B01D7/02; making single crystals C30B {; crystallisation as part of the Bayer process also classified in C01F7/14})
B01D9/00 (Crystallisation) appears on 1,380 US grants and 1,464 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,380
- Published applications
- 1,464
- Assignees
- 1,070
- Inventors
- 3,896
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 27 | 0 |
| 1977 | 16 | 0 |
| 1978 | 20 | 0 |
| 1979 | 18 | 0 |
| 1980 | 13 | 0 |
| 1981 | 24 | 0 |
| 1982 | 18 | 0 |
| 1983 | 16 | 0 |
| 1984 | 18 | 0 |
| 1985 | 17 | 0 |
| 1986 | 22 | 0 |
| 1987 | 17 | 0 |
| 1988 | 16 | 0 |
| 1989 | 16 | 0 |
| 1990 | 10 | 0 |
| 1991 | 15 | 0 |
| 1992 | 10 | 0 |
| 1993 | 8 | 0 |
| 1994 | 12 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 16 | 2 |
| 2002 | 20 | 12 |
| 2003 | 10 | 24 |
| 2004 | 7 | 25 |
| 2005 | 13 | 33 |
| 2006 | 18 | 33 |
| 2007 | 12 | 24 |
| 2008 | 25 | 20 |
| 2009 | 18 | 33 |
| 2010 | 12 | 43 |
| 2011 | 25 | 54 |
| 2012 | 30 | 34 |
| 2013 | 23 | 41 |
| 2014 | 34 | 39 |
| 2015 | 35 | 60 |
| 2016 | 37 | 46 |
| 2017 | 37 | 71 |
| 2018 | 55 | 101 |
| 2019 | 97 | 118 |
| 2020 | 103 | 96 |
| 2021 | 78 | 101 |
| 2022 | 66 | 98 |
| 2023 | 58 | 92 |
| 2024 | 63 | 117 |
| 2025 | 53 | 80 |
| 2026 | 50 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 9/0004Cooling by heat exchange536
- B01D 9/005Selection of auxiliary411
- B01D 9/0018Evaporation of components of the mixture to be separated329
- B01D 9/0059General arrangements of crystallisation plant294
- B01D 9/0036Crystallisation on to a bed of product crystals270
- B01D 9/004Fractional crystallisation239
- B01D 2009/0086Processes or apparatus thereforIndexing code211
- B01D 9/0063Control or regulation170
Recent patents
- Tetraazadodecane based chelating agents for separation of rare earth elements and method therefor6 Oct 2026US 12,752,219 B2Ustav Organicke Chemie A Biochemie Av Cr, V. V. I.
- Hard cracking point of cannabinoids29 Sep 2026US 12,746,487 B2Chemtor, LP
- Freeze concentration for urine-based fertilizer production29 Sep 2026US 12,747,194 B2The Regents of the University of Michigan
- Crystallization device, crystallization system, and crystallization method15 Sep 2026US 12,734,464 B2Tsukishima Kikai Co., Ltd.
- Method for purifying compound8 Sep 2026US 12,729,176 B2Nippon Shokubai Co., Ltd.
- Device for producing lithium carbonate crystals8 Oct 2026US 2026/0308003 A1K-Utec AG Salt Technologies
- A method and plant for purifying ethylene carbonate8 Oct 2026US 2026/0308137 A1Sulzer Management AG
- A method and plant for purifying ethylene carbonate8 Oct 2026US 2026/0308138 A1Sulzer Management AG
- Cascaded axial-flow saltwater crystallization system and use method thereof1 Oct 2026US 2026/0295459 A1Xi'an University of Technology
- High-efficiency method for producing lithium hydroxide from lithium carbonate through process improvement1 Oct 2026US 2026/0296907 A1Korea Institute of Geoscience and Mineral Resources
Most cited
By later US patents
- Method for conducting reactions involving biological molecules in plugs in a microfluidic system285US 8,329,407 B2The University of Chicago · 2012
- Method for obtaining a collection of plugs comprising biological molecules264US 8,273,573 B2The University of Chicago · 2012
- Method for conducting an autocatalytic reaction in plugs in a microfluidic system261US 8,304,193 B2The University of Chicago · 2012
- Method of performing PCR reaction in continuously flowing microfluidic plugs238US 8,822,148 B2The University of Chicago · 2014
- Method and apparatus for growing crystals219US 5,997,636 AInstrumentation Technology Associates, Inc. · 1999