D21H 21/04
Slime-control agents
D21H21/04 (Slime-control agents) appears on 55 US grants and 46 published applications in this corpus.
Search patents in D21H- Granted patents
- 55
- Published applications
- 46
- Assignees
- 32
- Inventors
- 100
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 2 |
| 2003 | 0 | 4 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 3 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 3 | 4 |
| 2014 | 1 | 4 |
| 2015 | 2 | 4 |
| 2016 | 4 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 3 |
| 2021 | 0 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance11 Mar 2025US 12,247,354 B2Kurita Water Industries Ltd.
- Method for producing paper12 Mar 2024US 11,926,968 B2Kurita Water Industries Ltd.
- Method for controlling growth of microorganisms and/or biofilms in an industrial process9 May 2023US 11,643,782 B2Kemira Oyj
- Method for manufacturing a fibrous web7 Mar 2023US 11,598,051 B2Kemira Oyj
- Polymer for pitch and stickies deposition control in papermaking31 Dec 2019US 10,519,602 B2Ecolab USA Inc.
- Biocide control in paper making19 Jun 2025US 2025/0198086 A1Kemira Oyj
- Method for controlling slime in a pulp or paper making process22 Aug 2024US 2024/0279875 A1Novozymes A/S
- Method for controlling slime in a pulp or paper making process6 Jul 2023US 2023/0212822 A1Novozymes A/S
- Method for controlling volatile fatty acid content in pulp, paper, and/or board making processes22 Jun 2023US 2023/0193562 A1Solenis Technologies, L.P.
- Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance13 Oct 2022US 2022/0325473 A1Kurita Water Industries Ltd.
Most cited
By later US patents
- Antibiotic zeolite114US 4,938,958 AShinagawa Fuel Co., Ltd. · 1990
- Hydantoin-enhanced halogen efficacy in pulp and paper applications62US 5,565,109 ALonza Ltd. · 1996
- Method for using urea hydrochloride45US 5,672,279 APeach State Labs, Inc. · 1997
- Application of multiple enzyme blend to control industrial slime on equipment surfaces36US 5,071,765 ANalco Chemical Company · 1991
- Control of development of biofilms in industrial process water32US 7,052,614 B2A. Y. Laboratories Ltd. · 2006