C10G 21/006
Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with
Official title: {of waste oils, e.g. PCB's containing oils}
C10G21/006 (Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with) appears on 44 US grants and 22 published applications in this corpus.
Search patents in C10G- Granted patents
- 44
- Published applications
- 22
- Assignees
- 33
- Inventors
- 71
- Latest grant
- 6 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 4 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 4 |
| 2018 | 1 | 2 |
| 2019 | 3 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Recovery of aliphatic hydrocarbons6 Feb 2024US 11,891,574 B2Shell USA, Inc.
- Purification of hydrocarbons15 Feb 2022US 11,248,177 B2
- Method and apparatus for recovering synthetic oils from composite oil streams14 May 2019US 10,287,513 B2Gen III Oil Corporation
- Method and apparatus for recovering synthetic oils from composite oil streams14 May 2019US 10,287,514 B2Gen III Oil Corporation
- System and method of refining used oil26 Feb 2019US 10,214,696 B2
- Recovery of aliphatic hydrocarbons9 Jun 2022US 2022/0177786 A1Shell Oil Company
- Purification of hydrocarbons11 Mar 2021US 2021/0071093 A1
- System and method of refining used oil9 Aug 2018US 2018/0223195 A1
- Properties of Hydroprocessed Base Oils10 May 2018US 2018/0127666 A1
- Method for Producing Base Lubricating Oil from Waste Oil5 Oct 2017US 2017/0283734 A1
Most cited
By later US patents
- Process for the extraction of oil or polychlorinated biphenyl from electrical parts through the use of solvents and for distillation of the solvents49US 4,879,004 AMicafil AG · 1989
- Solvent extraction process for treatment of oily substrates43US 5,286,386 AENSR Corporation · 1994
- Process for removing undesirable substances from electrical devices38US 4,425,949 ADiamond Shamrock Corporation · 1984
- Solvent extraction process employing comminuting and dispersing surfactants32US 5,154,831 AENSR Corporation · 1992
- Process for removing halogenated aliphatic and aromatic compounds from petroleum products30US 4,405,448 A1983