C01B 21/12
Carbamic acid or thiocarbamic acid
Official title: Carbamic acid {or thiocarbamic acid}; Salts thereof
C01B21/12 (Carbamic acid or thiocarbamic acid) appears on 15 US grants and 10 published applications in this corpus.
Search patents in C01B- Granted patents
- 15
- Published applications
- 10
- Assignees
- 10
- Inventors
- 23
- Latest grant
- 6 Jun 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 2 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Process for producing a solution of ammonium carbamate6 Jun 2023US 11,667,527 B2A. Y. Laboratories Ltd.
- Process for stripping carbamate from ion exchange resin26 Jan 2021US 10,898,891 B2Eco-Tec Limited
- Producing ammonium carbamate and reducing nitrogen oxides30 Jun 2020US 10,695,719 B2Loughborough University
- Method for quantifying the amount of ammonium bicarbonate in a solid sample of ammonium bicarbonate25 Feb 2020US 10,571,392 B2A. Y. Laboratories Ltd.
- Systems and methods for forming a solution of ammonium carbamate11 Jun 2019US 10,315,986 B1Solenis Technologies, L.P.
- Process for producing a solution of ammonium carbamate20 Oct 2022US 2022/0332580 A1A. Y. Laboratories Ltd.
- Solutions formed from ammonium carbonate/bicarbonate and ammonium hydroxide24 Dec 2020US 2020/0398233 A1Solenis Technologies, L.P.
- Producing ammonium carbamate and reducing nitrogen oxides23 Jan 2020US 2020/0023312 A1Loughborough University
- Method for Quantifying the Amount of Ammonium Bicarbonate in a Solid Sample of Ammonium Bicarbonate20 Jun 2019US 2019/0187049 A1A. Y. Laboratories Ltd.
- Process for Stripping Carbamate from Ion Exchange Resin10 Jan 2019US 2019/0009268 A1Eco-Tec Limited
Most cited
By later US patents
- Preparation of ammonium carbamate10US 4,567,294 ABASF SE · 1986
- Ammonium carbamate production6US 4,420,635 APhilip Morris Incorporated · 1983
- Systems and methods for integrated ammonia-urea process6US 7,642,377 B1Kellogg Brown & Root LLC · 2010
- N,N-diorganodithiocarbamate-alkylthiosulfinyl halide reaction products and lubricant compositions containing same3US 4,859,356 AMobil Oil Corporation · 1989
- Method for obtaining an ammonium carbamate solution from a gas mixture containing NH3, H2O and CO22US 6,914,157 B2Dsm IP Assets B.V. · 2005