B01J 2231/341
1,2-additions
Official title: 1,2-additions, e.g. aldol or Knoevenagel condensations
B01J2231/341 (1,2-additions) appears on 286 US grants and 249 published applications in this corpus.
Search patents in B01J- Granted patents
- 286
- Published applications
- 249
- Assignees
- 180
- Inventors
- 726
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 12 | 4 |
| 2002 | 13 | 12 |
| 2003 | 16 | 16 |
| 2004 | 11 | 19 |
| 2005 | 15 | 19 |
| 2006 | 11 | 6 |
| 2007 | 1 | 9 |
| 2008 | 4 | 3 |
| 2009 | 1 | 10 |
| 2010 | 9 | 7 |
| 2011 | 6 | 10 |
| 2012 | 6 | 8 |
| 2013 | 11 | 8 |
| 2014 | 7 | 14 |
| 2015 | 6 | 9 |
| 2016 | 11 | 15 |
| 2017 | 16 | 9 |
| 2018 | 12 | 11 |
| 2019 | 9 | 10 |
| 2020 | 5 | 6 |
| 2021 | 9 | 10 |
| 2022 | 9 | 6 |
| 2023 | 1 | 6 |
| 2024 | 5 | 9 |
| 2025 | 8 | 7 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Intermediates for making derivatives of substituted morpholines18 Aug 2026US 12,709,602 B2Supernus Pharmaceuticals, Inc.
- Processes for preparing C-4 sugars and ketose sugars2 Jun 2026US 12,643,921 B2Archer Daniels Midland Company
- Access to chiral bisphenol (BPOL) ligands through desymmetrizing asymmetric ortho-selective mono-halogenation26 May 2026US 12,637,403 B2The Chinese University of Hong Kong
- Carbamate production method, carbamate ester production method, and urea derivative production method12 May 2026US 12,623,999 B2National Institute of Advanced Industrial Science and Technology
- Spirocyclic compound containing catalyst for use in catalyzing reaction of epoxide compound and carbon dioxide5 May 2026US 12,616,964 B2Shenzhen Capchem Technology Co., Ltd.
- Novel compound or salt thereof, catalyst, method of preparing novel compound or salt thereof and method of preparing mannich product8 Oct 2026US 2026/0308178 A1Okinawa Institute of Science and Technology School Corporation
- Processes for preparing c-4 sugars and ketose sugars24 Sep 2026US 2026/0285894 A1
- Process for Producing Guerbet Alcohols from Fusel Alcohols20 Aug 2026US 2026/0242315 A1Terra Mater BV
- Spirocyclic compound containing catalyst for use in catalyzing reaction of epoxide compound and carbon dioxide6 Aug 2026US 2026/0225086 A1Shenzhen Capchem Technology Co., Ltd.
- Process of making derivatives of substituted morpholines19 Mar 2026US 2026/0078098 A1Supernus Pharmaceuticals, Inc.
Most cited
By later US patents
- Perfluorinated amide salts and their uses as ionic conducting materials61US 6,319,428 B1Centre National De La Recherche Scientifique · 2001
- Asymmetric syntheses48US 5,360,938 AUnion Carbide Chemicals & Plastics Technology Corporation · 1994
- Method and catalyst for making bisphenol46US 4,396,728 AGeneral Electric Company · 1983
- Catalyst and process for producing isocyanate trimers42US 5,691,440 AArco Chemical Technonogy, L.P. · 1997
- Method and catalyst for making bisphenol37US 4,346,247 AGeneral Electric Company · 1982