D21H 19/40
Siliceous
Official title: siliceous, e.g. clays
D21H19/40 (Siliceous) appears on 459 US grants and 435 published applications in this corpus.
Search patents in D21H- Granted patents
- 459
- Published applications
- 435
- Assignees
- 259
- Inventors
- 1,097
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 16 | 0 |
| 1990 | 15 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 9 | 0 |
| 1997 | 15 | 0 |
| 1998 | 14 | 0 |
| 1999 | 19 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 11 |
| 2003 | 14 | 16 |
| 2004 | 14 | 14 |
| 2005 | 4 | 12 |
| 2006 | 5 | 19 |
| 2007 | 9 | 16 |
| 2008 | 1 | 12 |
| 2009 | 5 | 11 |
| 2010 | 11 | 20 |
| 2011 | 11 | 14 |
| 2012 | 10 | 11 |
| 2013 | 9 | 10 |
| 2014 | 8 | 13 |
| 2015 | 4 | 10 |
| 2016 | 6 | 12 |
| 2017 | 14 | 21 |
| 2018 | 10 | 21 |
| 2019 | 17 | 31 |
| 2020 | 16 | 23 |
| 2021 | 15 | 19 |
| 2022 | 19 | 23 |
| 2023 | 11 | 21 |
| 2024 | 13 | 34 |
| 2025 | 9 | 17 |
| 2026 | 18 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polylactide formulation for improved extrusion processing6 Oct 2026US 12,753,555 B2WestRock MWV, LLC
- Polymer compositions and coatings22 Sep 2026US 12,742,090 B2The Penn State Research Foundation
- Laminate and roll22 Sep 2026US 12,742,290 B2Toppan Holdings Inc.
- Coated paper for use as packaging material15 Sep 2026US 12,735,844 B2Neenah Gessner GmbH
- Coated paper18 Aug 2026US 12,709,844 B2Koehler Innovation & Technology GmbH
- Single layer coated white kraftliner8 Oct 2026US 2026/0308847 A1
- Base paper for metallized paper, metallized paper, and packaging bag24 Sep 2026US 2026/0286609 A1Oji Holdings Corporation
- Coated barrier paper17 Sep 2026US 2026/0275641 A1Billerud Aktiebolag (publ)
- Swellable clay containing water-based barrier coating and method of making the same17 Sep 2026US 2026/0275644 A1Specialty Minerals (Michigan) Inc.
- Coated cellulosic structures10 Sep 2026US 2026/0266000 A1WestRock MWV, LLC
Most cited
By later US patents
- Process for preparing an aqueous dispersion116US 5,663,224 ARohm and Haas Company · 1997
- Process of manufacturing authenticatable paper products73US 6,054,021 AWestvaco Corporation · 2000
- Ink jet recording paper67US 4,478,910 AJujo Paper Co., Ltd. · 1984
- Recording method55US 4,642,654 ACanon Kabushiki Kaisha · 1987
- Paper coated with synthetic alkali metal aluminosilicates55US 4,988,561 AJ. M. Huber Corporation · 1991