D21H 19/385
Oxides, hydroxides or carbonates
Official title: {Oxides, hydroxides or carbonates}
D21H19/385 (Oxides, hydroxides or carbonates) appears on 397 US grants and 458 published applications in this corpus.
Search patents in D21H- Granted patents
- 397
- Published applications
- 458
- Assignees
- 228
- Inventors
- 889
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 3 |
| 2002 | 11 | 5 |
| 2003 | 4 | 10 |
| 2004 | 8 | 20 |
| 2005 | 3 | 14 |
| 2006 | 7 | 12 |
| 2007 | 5 | 6 |
| 2008 | 4 | 13 |
| 2009 | 4 | 16 |
| 2010 | 6 | 24 |
| 2011 | 4 | 14 |
| 2012 | 11 | 21 |
| 2013 | 14 | 12 |
| 2014 | 11 | 18 |
| 2015 | 13 | 24 |
| 2016 | 9 | 17 |
| 2017 | 21 | 43 |
| 2018 | 25 | 30 |
| 2019 | 24 | 24 |
| 2020 | 22 | 25 |
| 2021 | 22 | 18 |
| 2022 | 18 | 23 |
| 2023 | 14 | 20 |
| 2024 | 14 | 17 |
| 2025 | 5 | 18 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aqueous ethyl cellulose dispersion21 Jul 2026US 12,686,973 B2Kemira Oyj
- Barrier-coated cellulose-based substrate, laminated packaging material and packaging container comprising the cellulose-based substrate2 Jun 2026US 12,643,724 B2Tetra Laval Holdings & Finance S. A.
- Process for producing precipitated calcium carbonate in the presence of natural ground calcium carbonate19 May 2026US 12,630,438 B2Omya International AG
- Cellulosic structures for high barrier applications19 May 2026US 12,630,979 B2WestRock MWV, LLC
- Osidic dispersing agent5 May 2026US 12,617,968 B2Coatex
- Single layer coated white kraftliner8 Oct 2026US 2026/0308847 A1
- Barrier-coated cellulose-based substrate, laminated packaging material and packaging container comprising the cellulose-based substrate17 Sep 2026US 2026/0274535 A1Tetra Laval Holdings & Finance S. A.
- Coated barrier paper17 Sep 2026US 2026/0275641 A1Billerud Aktiebolag (publ)
- Heat sealable coated paper product16 Jul 2026US 2026/0201644 A1Billerud Aktiebolag (publ)
- Methods for production of precipitated calcium carbonate (pcc) and pcc product2 Jul 2026US 2026/0184588 A1Specialty Minerals (Michigan) Inc.
Most cited
By later US patents
- Ink jet recording sheet119US 4,460,637 AMitsubushi Paper Mills, Ltd. · 1984
- Materials coated with plate-like pigments72US 5,223,360 AMerck Patent GmbH · 1993
- Recording method55US 4,642,654 ACanon Kabushiki Kaisha · 1987
- Treated filler or pigment containing natural carbonate54US 6,666,953 B1Omya AG · 2003
- Plate stock52US 5,776,619 AFort James Corporation · 1998