C12N 2770/32451
Methods of production or purification of viral material
C12N2770/32451 (Methods of production or purification of viral material) appears on 39 US grants and 17 published applications in this corpus.
Search patents in C12N- Granted patents
- 39
- Published applications
- 17
- Assignees
- 26
- Inventors
- 85
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hepatitis A virus preparation method and hepatitis A virus prepared according to method24 Feb 2026US 12,558,417 B2SK Bioscience Co., Ltd.
- Engineered cells with decreased gene expression resulting in increased viral production23 May 2023US 11,655,471 B2University of Georgia Research Foundation, Inc.
- Method for extracting hepatitis a virus (HAV) antigen from cell culture20 Sep 2022US 11,447,528 B2Mediagnost Gesellschaft für Forschung und Herctellung von Diagnostika GmbH
- Duck hepatitis A virus type 3 mutant CH-P60-117C and construction thereof15 Jun 2021US 11,033,617 B2Sichuan Agricultural University
- Method for isolating hepatitis A virus or spring viremia of carp virus14 Jan 2014US 8,628,916 B2Industry Foundation of Chonnam National University
- Method of culturing wild-type hepatitis a virus using induced differentiated pluripotent stem cells derived hepatocytes15 Jan 2026US 2026/0015591 A1Chung Ang University Industry Academic Cooperation Foundation
- Hepatitis a virus preparation method and hepatitis a virus prepared according to method29 May 2025US 2025/0170234 A1SK Bioscience Co., Ltd.
- Method for Extracting Hepatitis A Virus (HAV) Antigen from Cell Culture24 Mar 2022US 2022/0089649 A1Mediagnost Gesellschaft FüR Forschung Und Herstellung Von Diagnostika GmbH
- Duck hepatitis a virus type 3 mutant ch-p60-117c and construction thereof14 Jan 2021US 2021/0008196 A1Sichuan Agricultural University
- Methods and compositions related to increased viral production9 Jan 2020US 2020/0010830 A1University of Georgia Research Foundation, Inc.
Most cited
By later US patents
- Hepatitis a virus cell culture in vitro29US 4,164,566 AMerck & Co., Inc. · 1979
- Vaccine against hepatitis A virus23US 4,894,228 AThe United States of America as represented by the Department of Health and Human Services · 1990
- Method for purifying viral nucleic acids17US 5,958,677 ANew York Blood Center, Inc. · 1999
- Hepatitis A virus culture process17US 6,194,210 B1Merck & Co., Inc. · 2001
- Process for purifying hepatitis a virus (HAV), and vaccine compositions containing hepatitis a virus14US 5,607,851 ABiocine S.p.A. · 1997