D21H 17/09
Sulfur-containing compounds
D21H17/09 (Sulfur-containing compounds) appears on 92 US grants and 87 published applications in this corpus.
Search patents in D21H- Granted patents
- 92
- Published applications
- 87
- Assignees
- 74
- Inventors
- 275
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 6 |
| 2007 | 1 | 3 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 2 | 5 |
| 2011 | 0 | 3 |
| 2012 | 3 | 3 |
| 2013 | 2 | 5 |
| 2014 | 3 | 2 |
| 2015 | 3 | 7 |
| 2016 | 6 | 9 |
| 2017 | 1 | 4 |
| 2018 | 3 | 4 |
| 2019 | 1 | 5 |
| 2020 | 3 | 8 |
| 2021 | 3 | 3 |
| 2022 | 7 | 4 |
| 2023 | 4 | 3 |
| 2024 | 1 | 4 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Stable cationic polyacrylamide dispersions and use thereof in papermaking2 Jun 2026US 12,644,230 B2Kemira Oyj
- Aqueous biodegradable-resin dispersion, production method therefor, and food-packaging paper obtained using aqueous biodegradable-resin dispersion7 Apr 2026US 12,595,626 B2Miyoshi Oil & Fat Co., Ltd.
- Starch-cellulose composite material8 Apr 2025US 12,270,153 B2Pratt Corrugated Holdings, Inc.
- Method for controlling growth of microorganisms and/or biofilms in an industrial process15 Oct 2024US 12,114,659 B2Kemira Oyj
- Paperboard product12 Sep 2023US 11,753,773 B2General Mills, Inc.
- Paper treatment agent and paper using same, and method for improving paper texture2 Jul 2026US 2026/0185305 A1Miyoshi Oil & Fat Co., Ltd.
- Composition and method for controlling volatile fatty acid content in pulp, paper, and/or board making processes29 Jan 2026US 2026/0028778 A1Solenis Technologies, L.P.
- A method, a moulded multi-layered fibrous product, and use thereof25 Dec 2025US 2025/0389086 A1Metsä Spring Oy
- Starch-cellulose composite material12 Jun 2025US 2025/0188679 A1Pratt Corrugated Holdings, Inc.
- Antimicrobial system and method21 Nov 2024US 2024/0383784 A1Kemira Oyj
Most cited
By later US patents
- Paper products containing a chemical softening composition170US 5,240,562 AThe Procter & Gamble Company · 1993
- Crosslinked cellulose products and method for their preparation114US 5,225,047 AWeyerhaeuser Company · 1993
- Method for improved wet strength paper90US 5,935,383 AKimberly-Clark Worldwide, Inc. · 1999
- Tissue paper products prepared with an ion-paired softener48US 6,245,197 B1Fort James Corporation · 2001
- Aqueous lecithin-based release aids and methods of using the same46US 5,658,374 ABuckman Laboratories International, Inc. · 1997