D21H 17/64
Alkaline compounds
D21H17/64 (Alkaline compounds) appears on 58 US grants and 78 published applications in this corpus.
Search patents in D21H- Granted patents
- 58
- Published applications
- 78
- Assignees
- 65
- Inventors
- 184
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 1 |
| 2005 | 2 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 4 | 0 |
| 2013 | 2 | 9 |
| 2014 | 4 | 2 |
| 2015 | 0 | 14 |
| 2016 | 4 | 5 |
| 2017 | 6 | 3 |
| 2018 | 5 | 3 |
| 2019 | 2 | 2 |
| 2020 | 0 | 1 |
| 2021 | 3 | 1 |
| 2022 | 0 | 6 |
| 2023 | 2 | 6 |
| 2024 | 3 | 7 |
| 2025 | 2 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Board, method for manufacturing a board and a panel comprising such board material26 May 2026US 12,637,810 B2Unilin BV
- Method for controlling decomposition of corrosion-resistant paper10 Feb 2026US 12,546,063 B2Nippon Beet Sugar Manufacturing Co., Ltd.
- Glyoxylated starch additive for pulp products17 Jun 2025US 12,331,467 B2The Board of Trustees of Western Michigan University
- Wrapper for aerosol delivery products and aerosol delivery products made therefrom3 Jun 2025US 12,317,918 B2SWM Holdings US, LLC
- Compostable cellulose-based paper for gas barrier in packaging material19 Nov 2024US 12,146,267 B2Ahlstrom Oyj
- A method for reducing the load of microbial contaminants in a pulp stock comprising a recycled fiber fraction16 Apr 2026US 2026/0103843 A1Stora Enso OYJ
- Glycoxylated Starch Additive for Pulp Products13 Nov 2025US 2025/0347056 A1The Board of Trustees of Western Michigan University
- Emulsion foam reducer for wet processing of cellulose or wood-based products or in food processing31 Jul 2025US 2025/0242280 A1State Line Holdings, LLC
- High-strength paper based on short-fiber cellulose and use thereof3 Jul 2025US 2025/0215644 A1Suzano S.A.
- Sizing additive performance using a novel strength complex12 Jun 2025US 2025/0188681 A1Ecolab USA Inc.
Most cited
By later US patents
- Process for obtaining fibers integral with calcium carbonate particles47US 6,387,212 B1L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2002
- Process for enhanced deposition and retention of particulate filler on papermaking fibers39US 5,679,220 AInternational Paper Company · 1997
- Method for improving brightness and cleanliness of secondary fibers for paper and paperboard manufacture32US 5,665,205 AInternational Paper Company · 1997
- Process for the manufacture of paper24US 5,496,440 AEka Nobel AB · 1996
- Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum and uses therefor23US 6,083,317 AImerys Pigments, Inc. · 2000