D21H 13/28
From natural polymers
Official title: from natural polymers
D21H13/28 (From natural polymers) appears on 59 US grants and 81 published applications in this corpus.
Search patents in D21H- Granted patents
- 59
- Published applications
- 81
- Assignees
- 51
- Inventors
- 182
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 5 |
| 2007 | 0 | 5 |
| 2008 | 1 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 3 |
| 2013 | 3 | 3 |
| 2014 | 1 | 2 |
| 2015 | 0 | 3 |
| 2016 | 3 | 2 |
| 2017 | 1 | 12 |
| 2018 | 3 | 3 |
| 2019 | 2 | 0 |
| 2020 | 1 | 6 |
| 2021 | 3 | 7 |
| 2022 | 7 | 5 |
| 2023 | 7 | 7 |
| 2024 | 4 | 1 |
| 2025 | 3 | 5 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Embossed fibrous structures and methods for making same12 May 2026US 12,623,434 B2The Procter & Gamble Company
- Hyaluronate nonwoven fabric and manufacturing method therefor6 Jan 2026US 12,514,961 B2Fiber Tech, Inc.
- Fibrous structures different fibrous elements2 Dec 2025US 12,486,618 B2The Procter & Gamble Company
- Layered fibrous structures25 Nov 2025US 12,480,258 B2The Procter & Gamble Company
- Paperboard products with improved rigidity and moisture barrier properties22 Apr 2025US 12,281,442 B2Hoffmaster Group, Inc.
- Method for manufacturing paper-making filler using mixed solution of organic fiber and inorganic compound and use thereof1 Oct 2026US 2026/0297850 A1MarinePad Co., Ltd.
- Method for preparing food-grade glassine paper using mycelium from submerged fermentation of edible fungi and food-grade glassine paper24 Sep 2026US 2026/0286616 A1Jilin Agricultural University
- Keratin material16 Jul 2026US 2026/0201146 A1Wool Research Organisation of New Zealand, Inc.
- Non-Woven Fabric16 Jul 2026US 2026/0201615 A1Asahi Kasei Kabushiki Kaisha
- Method for preparing janus paper by mycelia and janus paper11 Jun 2026US 2026/0160021 A1Jilin Agricultural University
Most cited
By later US patents
- Process for the production of paper containing starch fibers and the paper produced thereby107US 4,243,480 ANational Starch and Chemical Corporation · 1981
- Nonwoven fabric75US 4,018,646 AJohnson & Johnson · 1977
- Apparatus for preparing air-laid nonwoven webs from combined streams24US 3,963,392 AJohnson & Johnson · 1976
- Paper-making process with regenerated chitin fibers21US 4,392,916 ADirector-General of Agency of Industrial Science and Technology · 1983
- Fibres19US 3,949,762 A1976