D21C 11/122
Treatment
Official title: {Treatment, e.g. dissolution, of the smelt}
D21C11/122 (Treatment) appears on 60 US grants and 30 published applications in this corpus.
Search patents in D21C- Granted patents
- 60
- Published applications
- 30
- Assignees
- 41
- Inventors
- 109
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 2 | 2 |
| 2019 | 2 | 3 |
| 2020 | 2 | 1 |
| 2021 | 0 | 2 |
| 2022 | 3 | 4 |
| 2023 | 1 | 2 |
| 2024 | 4 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Automatic monitoring of smelt flow exiting a recovery boiler14 Jan 2025US 12,195,918 B2Andritz Inc.
- Method for controlling a chemical recovery boiler and a chemical recovery boiler1 Oct 2024US 12,104,319 B2Valmet Automation Oy
- Smelt shattering method and apparatus27 Aug 2024US 12,071,723 B2The Babcock & Wilcox Company
- Combustion of streams derived from hot water extraction of wood material4 Jun 2024US 12,000,087 B2Cascades Canada Ulc
- Method and apparatus for improved operation of chemical recovery boilers7 May 2024US 11,976,816 B2Sullivan, Higgins, and Brion PPE, LLC
- Method and Apparatus for Improved Operation of Chemical Recovery Boilers5 Dec 2024US 2024/0401800 A1Sullivan, Higgins, and Brion Power Plant Engineering, LLC
- Method and Apparatus for Improved Operation of Chemical Recovery Boilers8 Jun 2023US 2023/0175689 A1Sullivan, Higgins, and Brion PPE, LLC
- Method for controlling a chemical recovery boiler and a chemical recovery boiler23 Feb 2023US 2023/0057366 A1Valmet Automation Oy
- Automatic monitoring of smelt flow exiting a recovery boiler15 Dec 2022US 2022/0396918 A1Andritz Inc.
- Disruptor assembly adjustment system and method1 Dec 2022US 2022/0380978 A1Andritz Inc.
Most cited
By later US patents
- Apparatus for automatically cleaning smelt spouts of a chemical recovery furnace16US 4,706,324 A1987
- Disrupting the flow from the smelt spout of a recovery boiler15US 5,976,319 AAhlstrom Machinery Inc. · 1999
- Method and apparatus for opening discharge outlets14US 5,783,140 AChampion International Corporation · 1998
- Kraft smelt solidification in a fluidized bed reactor13US 5,545,292 AInstitute of Paper Science and Technology, Inc. · 1996
- Recovery boiler smelt spout11US 4,750,649 AInternational Paper Company · 1988