C01B 33/046
Purification
Official title: {Purification}
C01B33/046 (Purification) appears on 48 US grants and 38 published applications in this corpus.
Search patents in C01B- Granted patents
- 48
- Published applications
- 38
- Assignees
- 40
- Inventors
- 144
- Latest grant
- 16 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 3 |
| 2014 | 2 | 2 |
| 2015 | 5 | 3 |
| 2016 | 2 | 2 |
| 2017 | 4 | 4 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 6 |
| 2021 | 2 | 1 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Purification method of high-purity n-tetrasilane16 May 2023US 11,649,168 B2Taiwan Speciality Chemicals Corporation
- Process for producing isomer enriched higher silanes2 Aug 2022US 11,401,166 B2L'Air Liaquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
- Process for producing isomer enriched higher silanes25 Jan 2022US 11,230,474 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method of making aluminum-free neopentasilane14 Sep 2021US 11,117,807 B2Jiangsu Nata Opto-Electronic Materials Co. Ltd.
- Process for producing liquid polysilanes and isomer enriched higher silanes24 Aug 2021US 11,097,953 B2American Air Liquide, Inc.
- Silane recovery device and method18 Dec 2025US 2025/0382186 A1SK Corporation
- Method for fabricating trihalodisilane and method for fabricating semiconductor device using the same24 Aug 2023US 2023/0264963 A1Wonik Materials
- Purification method of high-purity n-Tetrasilane11 Nov 2021US 2021/0347644 A1Taiwan Speciality Chemicals Corporation
- Triphenylgermylsilane and trichlorosilyl-trichlorogermane for the production of germanium-silicon layers, and method for the production thereof from trichlorosilyl-triphenylgermane11 Jun 2020US 2020/0180966 A1Evonik Operations GmbH
- Process for producing isomer enriched higher silanes16 Apr 2020US 2020/0115238 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
Most cited
By later US patents
- Process for preparing disilane by using molecular sieves51US 5,089,244 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1992
- Gas stream purification40US 4,554,141 AEthyl Corporation · 1985
- Method and apparatus for purification of hydride gas streams29US 6,241,955 B1Aeronex, Inc. · 2001
- Purification of hydride gases24US 7,160,360 B2Air Products and Chemicals, Inc. · 2007
- Process for the purification of silane21US 4,099,936 AUnion Carbide Corporation · 1978