C07D 501/02
Preparation
C07D501/02 (Preparation) appears on 220 US grants and 61 published applications in this corpus.
Search patents in C07D- Granted patents
- 220
- Published applications
- 61
- Assignees
- 86
- Inventors
- 384
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 29 | 0 |
| 1978 | 18 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 15 | 0 |
| 1982 | 14 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 2 |
| 2007 | 1 | 4 |
| 2008 | 1 | 0 |
| 2009 | 2 | 4 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 5 | 8 |
| 2015 | 7 | 5 |
| 2016 | 3 | 2 |
| 2017 | 4 | 8 |
| 2018 | 1 | 4 |
| 2019 | 3 | 3 |
| 2020 | 4 | 2 |
| 2021 | 3 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Refining method of midbody of latamoxef sodium1 Jul 2025US 12,344,622 B2Hainan Hailing Chemipharma Corporation Ltd.
- Intermediates in the synthesis of C3-substituted cephalosporins12 Dec 2023US 11,840,544 B2Norbrook Laboratories Limited
- Synthesis of cephalosporin compounds13 Jul 2021US 11,059,835 B2Merck Sharp & Dohme Corp.
- Crystal of cephalosporin intermediate 7α-methoxy cephalothin and method for preparing same6 Jul 2021US 11,053,259 B2Qilu Antibiotics Pharmaceutical Co. Ltd.
- Intermediates in the synthesis of cephalosporin compounds9 Mar 2021US 10,941,161 B2Merck Sharp & Dohme Corp.
- Method for producing ß-lactam compound17 Sep 2026US 2026/0274862 A1FUJIFILM Corporation
- Fluorogenic assay for rapid screening of bacterial beta-lactamase activity18 Jul 2024US 2024/0240226 A1The Board of Trustees of the Leland Stanford Junior University
- Refining method of midbody of latamoxef sodium8 Feb 2024US 2024/0043449 A1Hainan Hailing Chemipharma Corportion Ltd
- Methods for identifying compositions for inhibiting viral infectivity28 Dec 2023US 2023/0416852 A1Meharry Medical College
- Intermediates in the synthesis of c3-substituted cephalosporins26 Aug 2021US 2021/0261571 A1Norbrook Laboratories Limited
Most cited
By later US patents
- 3-Unsaturated alkyl cephems from 3-triflyl cephems26US 4,870,168 ABristol-Myers Company · 1989
- Method for cyclization to give cephem ring25US 4,066,641 A1978
- 3-Thio-substituted cephalosporin antibiotics23US 3,992,377 AEli Lilly and Company · 1976
- Process for the manufacture of 7.beta.-amino-3-cephem-3-ol-4 carboxylic acid compounds21US 4,147,864 ACiba-Geigy Corporation · 1979
- 7.beta.-Amino-3-thio-3-cephem-4-carboxylic acid compounds, and antibacterial compositions and methods using them21US 4,256,739 ACiba-Geigy Corporation · 1981