C07C 401/00
Irradiation products of cholesterol or its derivatives
Official title: Irradiation products of cholesterol or its derivatives; Vitamin D derivatives, 9,10-seco cyclopenta[a]phenanthrene or analogues obtained by chemical preparation without irradiation
C07C401/00 (Irradiation products of cholesterol or its derivatives) appears on 560 US grants and 347 published applications in this corpus.
Search patents in C07C- Granted patents
- 560
- Published applications
- 347
- Assignees
- 159
- Inventors
- 672
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 14 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 14 | 0 |
| 1986 | 11 | 0 |
| 1987 | 8 | 0 |
| 1988 | 9 | 0 |
| 1989 | 10 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 21 | 0 |
| 1994 | 16 | 0 |
| 1995 | 31 | 0 |
| 1996 | 27 | 0 |
| 1997 | 19 | 0 |
| 1998 | 30 | 0 |
| 1999 | 24 | 0 |
| 2000 | 20 | 0 |
| 2001 | 16 | 7 |
| 2002 | 24 | 23 |
| 2003 | 22 | 24 |
| 2004 | 7 | 18 |
| 2005 | 9 | 22 |
| 2006 | 16 | 28 |
| 2007 | 18 | 35 |
| 2008 | 4 | 17 |
| 2009 | 10 | 19 |
| 2010 | 16 | 20 |
| 2011 | 14 | 17 |
| 2012 | 15 | 17 |
| 2013 | 21 | 19 |
| 2014 | 10 | 8 |
| 2015 | 10 | 3 |
| 2016 | 5 | 9 |
| 2017 | 7 | 12 |
| 2018 | 3 | 4 |
| 2019 | 8 | 6 |
| 2020 | 0 | 6 |
| 2021 | 5 | 2 |
| 2022 | 1 | 12 |
| 2023 | 3 | 6 |
| 2024 | 5 | 7 |
| 2025 | 5 | 1 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Synthesis of cholesterol and vitamin D3 from phytosterols9 Jun 2026US 12,649,762 B2Fermenta Biotech Limited
- Vitamin D3 and its analogue Calcifediol from Ergosterol2 Jun 2026US 12,643,851 B2Fermenta Biotech Limited
- Alkyne compound, vitamin D compound, analytical method, and production method19 May 2026US 12,630,505 B2JEOL Ltd.
- Sterols as novel immunomodulatory agents and their use as vaccine adjuvants25 Nov 2025US 12,478,671 B2Ohio State Innovation Foundation
- Vitamin D3 phosphate and pharmaceutically acceptable salts thereof, pharmaceutical compositions comprising the compound and methods for preparing the compound18 Nov 2025US 12,473,310 B2King's College London
- Synthesis of cholesterol and vitamin d3 from phyfosterols10 Sep 2026US 2026/0265289 A1Fermenta Biotech Limited
- Vitamin d3 phosphate and pharmaceutically acceptable salts thereof, pharmaceutical compositions comprising the compound and methods for preparing the compound13 Aug 2026US 2026/0234169 A1King's College London
- Method for preparing vitamin d2 using a microchannel reactor25 Jun 2026US 2026/0176233 A1Formosa Laboratories, Inc.
- Photochemical synthesis of vitamin d3 using sensitizers11 Jun 2026US 2026/0159478 A1Fermenta Biotech Limited
- Sterols as novel immunomodulatory agents and their use as vaccine adjuvants26 Feb 2026US 2026/0053912 A1Ohio State Innovation Foundation
Most cited
By later US patents
- 19-Nor-vitamin D.sub.3 compounds with substitutent at 2-position119US 5,536,713 AWisconsin Alumni Research Foundation · 1996
- 2-alkylidene-19-nor-vitamin D compounds115US 5,843,928 AWisconsin Alumni Research Foundation · 1998
- 2-alkyl-19-nor-vitamin D compounds114US 5,945,410 AWisconsin Alumni Research Foundation · 1999
- vitamin D.sub.3 derivatives having a substituent at 2-position96US 4,666,634 AChugai Seiyaku Kabushiki Kaisha · 1987
- Novel vitamin D analogues87US 4,866,048 ALeo Pharmaceutical Products Ltd. · 1989