D21J 1/08
Impregnated or coated fibreboard
D21J1/08 (Impregnated or coated fibreboard) appears on 111 US grants and 173 published applications in this corpus.
Search patents in D21J- Granted patents
- 111
- Published applications
- 173
- Assignees
- 94
- Inventors
- 300
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 5 |
| 2012 | 4 | 6 |
| 2013 | 8 | 10 |
| 2014 | 3 | 9 |
| 2015 | 3 | 5 |
| 2016 | 1 | 3 |
| 2017 | 3 | 5 |
| 2018 | 3 | 18 |
| 2019 | 4 | 5 |
| 2020 | 9 | 13 |
| 2021 | 5 | 6 |
| 2022 | 6 | 14 |
| 2023 | 10 | 17 |
| 2024 | 7 | 24 |
| 2025 | 13 | 19 |
| 2026 | 9 | 4 |
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
- Thermoformable ovenable recyclable coated cellulosic board, ovenable recyclable coated cellulosic board food vessels thermoformed therefrom, and methods for manufacturing and using thereof29 Sep 2026US 12,747,540 B2WestRock MWV, LLC
- Hemicellulose-containing coatings7 Jul 2026US 12,674,280 B2ChemStone, Inc.
- Method for coating a hollow container comprising molded pulp7 Jul 2026US 12,674,284 B2Alpla Werke Alwin Lehner GmbH & Co. KG
- Pulp container with fused junction and method of making same23 Jun 2026US 12,662,288 B2Lgab LLC
- Method for coating a hollow container comprising molded pulp8 Oct 2026US 2026/0308853 A1
- Coating apparatus for coating a hollow container comprising molded pulp1 Oct 2026US 2026/0297855 A1
- Method30 Jul 2026US 2026/0218459 A1
- Biodegradable pulp packaging products from natural fibers15 Jan 2026US 2026/0015144 A1Papacks Sales GmbH
- Disposable paper pulp fast food cutlery18 Dec 2025US 2025/0380829 A1
Most cited
By later US patents
- Floor element136US 5,827,592 A1998
- Multiple layer nonwoven mat and laminate41US 6,187,697 B12001
- Durable acoustical panel and method of making the same28US 6,616,804 B2AWI Licensing LLC · 2003
- Method of making a multiple layer nonwoven mat26US 6,432,482 B1Johns Manville International, Inc. · 2002
- Method of manufacturing an inorganic board20US 5,681,428 ANichiha Corporation · 1997