B01J 2231/646
Of aromatic or heteroaromatic rings
Official title: of aromatic or heteroaromatic rings
B01J2231/646 (Of aromatic or heteroaromatic rings) appears on 69 US grants and 51 published applications in this corpus.
Search patents in B01J- Granted patents
- 69
- Published applications
- 51
- Assignees
- 51
- Inventors
- 216
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 5 | 12 |
| 2017 | 1 | 4 |
| 2018 | 5 | 3 |
| 2019 | 4 | 6 |
| 2020 | 9 | 6 |
| 2021 | 6 | 3 |
| 2022 | 2 | 0 |
| 2023 | 2 | 4 |
| 2024 | 1 | 2 |
| 2025 | 2 | 4 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing catalyst for selective hydrogenation of cyclododecatriene and catalyst prepared by preparation method1 Sep 2026US 12,722,147 B2Hanwha Solutions Corporation
- Nanohybrid catalyst for hydrogenation reactions30 Jun 2026US 12,667,833 B2Imam Abdulrahman Bin Faisal University
- Microcapsules and processes for their preparation25 Nov 2025US 12,478,064 B2Yissum Research Development Company of the Hebrew University of Jerusalem
- Preparation method of Co@CM multi-channel ceramic catalytic membrane for hydrogenation of p-nitrophenol21 Oct 2025US 12,447,466 B2Nanjing Tech University
- Organometallic compound for hydrocarbon cracking6 Aug 2024US 12,053,766 B2Hindustan Petroleum Corporation Limited
- Preparation method of co@cm multi-channel ceramic catalytic membrane for hydrogenation of p-nitrophenol11 Sep 2025US 2025/0281919 A1Nanjing Tech University
- Unsupported bimetallic hydrogenation catalyst, its preparation and application thereof24 Jul 2025US 2025/0235857 A1China Petroleum & Chemical Corporation
- Nanohybrid catalyst for hydrogenation reactions20 Mar 2025US 2025/0091041 A1Imam Abdulrahman Bin Faisal University
- A 6-substituted Chiral Pure Difluoropiperidine Quinazoline Derivative And Its Preparation Method20 Mar 2025US 2025/0092015 A1Weishang (Shanghai) Bio-Pharmaceutical Co., Ltd.
- Unsupported hydrogenation catalyst, its preparation and application thereof5 Dec 2024US 2024/0399351 A1China Petroleum & Chemical Corporation
Most cited
By later US patents
- Catalyst system comprising a first catalyst system tethered to a supported catalyst30US 5,789,333 AIowa State University Research Foundation, Inc. · 1998
- Catalysts for hydrogenation of aromatic compounds20US 4,506,030 ABoard of Regents, The University of Texas System · 1985
- Process for hydrogenating unsaturated compounds17US 4,271,323 AInstitut Francais du Petrole · 1981
- Process of hydrogenating benzenes and group IVa metal hydride catalysts therefor14US 4,409,411 AAllied Corporation · 1983
- Hydrogenation catalyst and hydrogenation process wherein said catalyst is used14US 4,980,331 AShell Oil Company · 1990