C01B 2203/148
Involving a recycle stream to the feed of the process for making
Official title: involving a recycle stream to the feed of the process for making hydrogen or synthesis gas
C01B2203/148 (Involving a recycle stream to the feed of the process for making) appears on 657 US grants and 830 published applications in this corpus.
Search patents in C01B- Granted patents
- 657
- Published applications
- 830
- Assignees
- 331
- Inventors
- 1,642
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 14 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 20 | 0 |
| 2001 | 20 | 5 |
| 2002 | 13 | 22 |
| 2003 | 14 | 22 |
| 2004 | 18 | 29 |
| 2005 | 13 | 25 |
| 2006 | 12 | 19 |
| 2007 | 9 | 24 |
| 2008 | 16 | 37 |
| 2009 | 22 | 39 |
| 2010 | 21 | 34 |
| 2011 | 28 | 40 |
| 2012 | 23 | 44 |
| 2013 | 29 | 25 |
| 2014 | 33 | 55 |
| 2015 | 27 | 36 |
| 2016 | 51 | 45 |
| 2017 | 34 | 33 |
| 2018 | 28 | 23 |
| 2019 | 22 | 15 |
| 2020 | 15 | 13 |
| 2021 | 10 | 21 |
| 2022 | 16 | 43 |
| 2023 | 23 | 49 |
| 2024 | 23 | 60 |
| 2025 | 27 | 45 |
| 2026 | 15 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for effluent stream abatement via pyrolytic emission looping8 Sep 2026US 12,729,114 B2Lyten, Inc.
- Green methanol production25 Aug 2026US 12,715,827 B2ZoneFlow Reactor Technologies, LLC
- Adiabatic multi-stage reactors for hydrogen production and related systems and methods4 Aug 2026US 12,698,204 B2Saudi Arabian Oil Company
- Methods for forming gas products from hydrocarbon feeds4 Aug 2026US 12,698,207 B2Saudi Arabian Oil Company
- Use of renewable energy in methanol synthesis14 Jul 2026US 12,678,760 B2Sabic Global Technologies B.V.
- Steam-Hydrocarbon Reforming with Reduced Carbon Dioxide Emissions8 Oct 2026US 2026/0307987 A1Air Products and Chemicals, Inc.
- Process for producing hydrogen10 Sep 2026US 2026/0265053 A1Johnson Matthey Davy Technologies Limited
- Anaerobic digester-based system for rng and hydrogen productions3 Sep 2026US 2026/0257912 A1University of Southern California
- Carbon formation chemical looping using oxygen27 Aug 2026US 2026/0250129 A1CZero Inc.
- Biogas feed for carbon monoxide production27 Aug 2026US 2026/0250588 A1Topsoe A/S
Most cited
By later US patents
- Method of methanol production328US 4,927,857 AEngelhard Corporation · 1990
- Synthesis gas production system and method299US 6,085,512 ASyntroleum Corporation · 2000
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- Fuel cell electric power production199US 4,522,894 AEngelhard Corporation · 1985
- Method and system for supplying hydrogen for use in fuel cells190US 6,348,278 B1Mobil Oil Corporation · 2002