C22B 3/33
Cyanic acids, derivatives thereof
Official title: {Cyanic acids, derivatives thereof}
C22B3/33 (Cyanic acids, derivatives thereof) appears on 12 US grants and 3 published applications in this corpus.
Search patents in C22B- Granted patents
- 12
- Published applications
- 3
- Assignees
- 11
- Inventors
- 31
- Latest grant
- 21 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for recovering metal from electronic waste21 Mar 2023US 11,608,544 B2Mint Innovation Limited
- Method for separating hafnium from zirconium18 May 2004US 6,737,030 B2ATI Properties, Inc.
- Method for recovering and separating metals from waste streams14 Aug 2001US 6,274,045 B1
- Winning metal from ore21 May 1985US 4,518,420 ANational Research Development Corporation
- Obtaining copper (I) chloride from ores with acetonitrile29 Dec 1981US 4,308,239 AAnumin Pty. Ltd.
- An integrated heap leach process31 Aug 2023US 2023/0272506 A1Anglo American Technical & Sustainability Services Ltd
- Process for recovering metal from electronic waste20 Aug 2020US 2020/0263275 A1Mint Innovation Limited
- Method for separating hafnium from zirconium31 Jul 2003US 2003/0143138 A1ATI Properties, Inc.
Most cited
By later US patents
- Method for recovering and separating metals from waste streams35US 6,274,045 B12001
- Certain .beta.-diketones and the use thereof as metal extractants31US 4,065,502 AGeneral Mills Chemicals, Inc. · 1977
- Method for separating hafnium from zirconium5US 6,737,030 B2ATI Properties, Inc. · 2004
- Methods of separating and recovering copper from materials containing copper4US 4,070,183 AAnumin Pty. Ltd. · 1978
- Removal of 3-mercapto-4-methyl-2-pentanone from zirconium/hafnium separation processes2US 4,202,862 ATeledyne Industries, Inc. · 1980