D21G 9/0018
Controlling the stock preparation
Official title: {controlling the stock preparation}
D21G9/0018 (Controlling the stock preparation) appears on 53 US grants and 62 published applications in this corpus.
Search patents in D21G- Granted patents
- 53
- Published applications
- 62
- Assignees
- 36
- Inventors
- 136
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 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 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 3 |
| 2005 | 0 | 1 |
| 2006 | 2 | 3 |
| 2007 | 0 | 0 |
| 2008 | 3 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 0 |
| 2014 | 3 | 2 |
| 2015 | 0 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 3 | 7 |
| 2020 | 4 | 2 |
| 2021 | 2 | 5 |
| 2022 | 1 | 3 |
| 2023 | 3 | 5 |
| 2024 | 4 | 7 |
| 2025 | 7 | 8 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for distributing chemicals in delignification stages of pulp bleaching process1 Sep 2026US 12,723,350 B2Andritz Inc.
- Predictive and real time process intervention involving a multi-component defoamer feed unit18 Aug 2026US 12,709,840 B2Buckman Laboratories International, Inc.
- Determination of a property of a fiber suspension28 Jul 2026US 12,692,656 B2Btg Instruments AB
- Separation device30 Dec 2025US 12,509,826 B2Seiko Epson Corporation
- Method for optimizing the refining energy during an operation of refining of a fiber composition7 Oct 2025US 12,435,470 B2Kadant Lamort
- Method for controlling a process in making pulp, paper, or board27 Nov 2025US 2025/0361677 A1Kemira Oyj
- Sheet manufacturing apparatus23 Oct 2025US 2025/0327247 A1Seiko Epson Corporation
- Optimizing paper making process of a paper machine16 Oct 2025US 2025/0320661 A1Haber Inc.
- Apparatus for and method of measuring suspension flowing in tube fractionator4 Sep 2025US 2025/0277338 A1Valmet Automation Oy
- Method for optimizing the refining energy during an operation of refining of a fiber composition26 Jun 2025US 2025/0207327 A1Kadant Lamort
Most cited
By later US patents
- Dynamic on-line optimization of production processes53US 7,085,615 B2ABB AB · 2006
- System for monitoring contaminants with a detector in a paper pulp stream36US 4,758,308 A1988
- Method and apparatus for on-line monitoring of specific surface of mechanical pulps18US 4,276,119 ADomtar Inc. · 1981
- Method and apparatus for on-line monitoring of specific surface of mechanical pulps15US 4,441,960 A1984
- Fiber length indicating apparatus and method10US 4,554,051 ABolton-Emerson, Inc. · 1985