B01D 8/00
Cold traps
Official title: Cold traps; Cold baffles (pumps for evacuating by condensing or freezing F04B37/08)
B01D8/00 (Cold traps) appears on 239 US grants and 164 published applications in this corpus.
Search patents in B01D- Granted patents
- 239
- Published applications
- 164
- Assignees
- 157
- Inventors
- 523
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 9 | 3 |
| 2002 | 7 | 4 |
| 2003 | 7 | 3 |
| 2004 | 5 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 3 |
| 2007 | 1 | 3 |
| 2008 | 3 | 3 |
| 2009 | 2 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 5 |
| 2012 | 1 | 4 |
| 2013 | 2 | 19 |
| 2014 | 3 | 13 |
| 2015 | 8 | 12 |
| 2016 | 8 | 4 |
| 2017 | 9 | 8 |
| 2018 | 7 | 10 |
| 2019 | 12 | 8 |
| 2020 | 8 | 10 |
| 2021 | 8 | 9 |
| 2022 | 5 | 10 |
| 2023 | 13 | 7 |
| 2024 | 3 | 9 |
| 2025 | 3 | 8 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for cryogenic refrigeration7 Jul 2026US 12,673,274 B21372934 B. C. Ltd.
- Variable impedance, rotatable baffle cold trap2 Jun 2026US 12,643,057 B2Ace Machine Design Inc.
- System to collect, recover and recycle chemical exhaust from semiconductor processing chambers26 May 2026US 12,636,592 B2APPLIED Materials.Inc.
- Heating assembly for a chromatography system21 Apr 2026US 12,607,607 B2GL Sciences Incorporated
- Purification system for nitrogen gas and xenon gas in water and isotope static analysis method thereof3 Mar 2026US 12,566,154 B2Institute of Geology and Geophysics, Chinese Academy of Sciences
- System to collect, recover and recycle chemical exhaust from semiconductor processing chambers27 Aug 2026US 2026/0249209 A1APPLIED Materials.Inc.
- Tandem evolved gas - gas chromatography - mass spectrometry28 May 2026US 2026/0146978 A1
- Apparatus for trapping fumes and system for processing substrate using the same26 Feb 2026US 2026/0054195 A1Semes Co., Ltd.
- Graphene quantum dots from carbon materials25 Dec 2025US 2025/0388473 A1Lyten, Inc.
- Method of selectively catalytically reducing dinitrogen oxide, a method of extracting carbon dioxide, a method of detecting carbon dioxide, an apparatus, and use7 Aug 2025US 2025/0249405 A1Teknologian tutkimuskeskus VTT Oy
Most cited
By later US patents
- Trap apparatus382US 6,488,774 B1Ebara Corporation · 2002
- High pressure chemical vapor trapping method382US 7,425,224 B2Tegal Corporation · 2008
- Cryo-slammer125US 5,044,165 ABoard of Regents, The University of Texas · 1991
- Fluid cooled trap81US 5,820,641 AMKS Instruments, Inc. · 1998
- Process for removing lighter volatile impurities from gases56US 4,755,201 AMesser Griesheim GmbH · 1988