D21H 17/31
Gums
D21H17/31 (Gums) appears on 94 US grants and 71 published applications in this corpus.
Search patents in D21H- Granted patents
- 94
- Published applications
- 71
- Assignees
- 59
- Inventors
- 250
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 5 | 8 |
| 2003 | 5 | 4 |
| 2004 | 0 | 2 |
| 2005 | 1 | 1 |
| 2006 | 3 | 3 |
| 2007 | 2 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 3 |
| 2015 | 3 | 3 |
| 2016 | 1 | 4 |
| 2017 | 2 | 3 |
| 2018 | 4 | 3 |
| 2019 | 1 | 4 |
| 2020 | 3 | 3 |
| 2021 | 2 | 3 |
| 2022 | 3 | 3 |
| 2023 | 2 | 4 |
| 2024 | 3 | 2 |
| 2025 | 2 | 6 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for manufacturing onion pulp for paper and capsule9 Dec 2025US 12,492,511 B2
- Starch-cellulose composite material8 Apr 2025US 12,270,153 B2Pratt Corrugated Holdings, Inc.
- Functionalization and reinforcement in the dry state and in the wet state of a cellulosic material by an oxidized polysaccharide10 Dec 2024US 12,162,963 B2Centre National De La Recherche Scientifique
- Fluorocarbon-free and bio-based oil and water barrier materials comprising polyelectrolyte complexes10 Dec 2024US 12,163,291 B2Organoclick AB
- Gum for cigarette paper, cigarette paper and process for making it5 Nov 2024US 12,133,549 B2Republic Technologies (North America) LLC
- Method for manufacturing onion pulp for paper and capsule9 Apr 2026US 2026/0098379 A1
- Method for manufacturing onion pulp for paper and capsule5 Feb 2026US 2026/0035860 A1
- Method for manufacturing onion pulp for paper and capsule28 Aug 2025US 2025/0270765 A1
- Water-based barrier coating of native substances for paper, cardboard or moulded pulp26 Jun 2025US 2025/0207332 A1CHT Germany GmbH
- Starch-cellulose composite material12 Jun 2025US 2025/0188679 A1Pratt Corrugated Holdings, Inc.
Most cited
By later US patents
- Polysaccharide derivatives containing aldehyde groups, their preparation from the corresponding acetals and use as paper additives144US 4,675,394 ANational Starch and Chemical Corporation · 1987
- Retention and drainage aid for papermaking106US 4,927,498 AE. I. Du Pont de Nemours and Company · 1990
- Polyaluminosilicate process91US 5,176,891 AEka Chemicals AB · 1993
- Dry strength additive for paper91US 5,338,406 AHercules Incorporated · 1994
- Acetals useful for the preparation of polysaccharide derivatives79US 4,983,748 ANational Starch and Chemical Investment Holding Corporation · 1991