C10G 67/02
Plural serial stages only
Official title: plural serial stages only
C10G67/02 (Plural serial stages only) appears on 1,118 US grants and 1,173 published applications in this corpus.
Search patents in C10G- Granted patents
- 1,118
- Published applications
- 1,173
- Assignees
- 290
- Inventors
- 2,320
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 12 | 0 |
| 1983 | 7 | 0 |
| 1984 | 10 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 18 | 0 |
| 1989 | 12 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 12 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 16 | 0 |
| 2000 | 13 | 0 |
| 2001 | 13 | 6 |
| 2002 | 15 | 14 |
| 2003 | 8 | 17 |
| 2004 | 10 | 17 |
| 2005 | 8 | 9 |
| 2006 | 7 | 25 |
| 2007 | 9 | 16 |
| 2008 | 7 | 24 |
| 2009 | 13 | 25 |
| 2010 | 21 | 41 |
| 2011 | 25 | 33 |
| 2012 | 16 | 22 |
| 2013 | 22 | 62 |
| 2014 | 24 | 50 |
| 2015 | 46 | 87 |
| 2016 | 44 | 61 |
| 2017 | 54 | 82 |
| 2018 | 60 | 73 |
| 2019 | 61 | 73 |
| 2020 | 80 | 69 |
| 2021 | 89 | 70 |
| 2022 | 52 | 75 |
| 2023 | 56 | 70 |
| 2024 | 49 | 69 |
| 2025 | 64 | 43 |
| 2026 | 29 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C10G 67/04Including solvent extraction as the refining step in the absence of hydrogen513
- C10G 67/06Including a sorption process as the refining step in the absence of255
- C10G 67/14Including at least two different refining steps in the absence of hydrogen143
- C10G 67/12Including oxidation as the refining step in the absence of hydrogen63
- C10G 67/08Including acid treatment as the refining step in the absence of hydrogen32
- C10G 67/10Including alkaline treatment as the refining step in the absence of hydrogen30
Recent patents
- Liquefaction process6 Oct 2026US 12,753,353 B1
- Catalyst selection for improved lipid feedstock conversion15 Sep 2026US 12,734,506 B2Chevron U.S.A.Inc.
- Methods for conversion of mixed plastic wastes to a liquid hydrocarbon product25 Aug 2026US 12,716,034 B2Sabic Global Technologies B.V.
- Process to make finished base oils and white oils from dewaxed bulk base oils25 Aug 2026US 12,716,037 B2Chevron U. S. A. Inc.
- Process for the integrated production of H2 and aviation kerosene from a renewable raw material21 Jul 2026US 12,686,828 B2Petroleo Brasileiro S.A. - Petrobras
- Application of a bottom divided wall column (bdwc) with and without vapor recompression (vrc) to separate aromatic rich streams from the pyrolysis gasoline hydrogenation reactor1 Oct 2026US 2026/0297434 A1Lummus Technology Inc.
- Method for catalytic reforming with upgrading of non-aromatic effluents17 Sep 2026US 2026/0275209 A1Ifp Energies Nouvelles
- Process for fractionating a stream10 Sep 2026US 2026/0263962 A1Uop LLC
- Method for the purification of a plastic liquefaction oil composition by cavitation, and use thereof10 Sep 2026US 2026/0265621 A1Totalenergies Onetech
- Method for the purification of a plastic liquefaction oil composition in a turbulent flow, and use thereof3 Sep 2026US 2026/0258307 A1Totalenergies Onetech
Most cited
By later US patents
- Continuous in-situ combination process for upgrading heavy oil265US 5,935,421 AExxon Research & Engineering Co. · 1999
- Base oil manufacturing plant246US 8,956,581 B2Chevron U.S.A.Inc. · 2015
- Oil stabilization228US 5,059,303 AAmoco Corporation · 1991
- Process for manufacturing improved process oils using extraction of hydrotreated distillates208US 6,110,358 AExxon Research & Engineering Co. · 2000
- Premium synthetic lubricant base stock having at least 95% non-cyclic isoparaffins166US 6,080,301 AExxonMobil Research and Engineering Company · 2000