E04C 2/043
Of plaster
Official title: {of plaster (E04C2/049 takes precedence)}
E04C2/043 (Of plaster) appears on 482 US grants and 611 published applications in this corpus.
Search patents in E04C- Granted patents
- 482
- Published applications
- 611
- Assignees
- 163
- Inventors
- 854
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 9 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 5 |
| 2002 | 15 | 21 |
| 2003 | 7 | 25 |
| 2004 | 17 | 31 |
| 2005 | 14 | 18 |
| 2006 | 4 | 20 |
| 2007 | 9 | 10 |
| 2008 | 6 | 23 |
| 2009 | 7 | 31 |
| 2010 | 19 | 23 |
| 2011 | 11 | 16 |
| 2012 | 7 | 20 |
| 2013 | 18 | 10 |
| 2014 | 12 | 23 |
| 2015 | 11 | 25 |
| 2016 | 10 | 32 |
| 2017 | 12 | 34 |
| 2018 | 18 | 29 |
| 2019 | 28 | 33 |
| 2020 | 20 | 40 |
| 2021 | 28 | 25 |
| 2022 | 18 | 20 |
| 2023 | 26 | 24 |
| 2024 | 28 | 29 |
| 2025 | 18 | 22 |
| 2026 | 3 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wooden load-bearing wall, method of constructing wooden load-bearing wall, method of increasing co-efficient of effective wall length of wooden load-bearing wall, and gypsum-based load-bearing board28 Jul 2026US 12,692,698 B2Yoshino Gypsum Co., Ltd.
- Asymmetrical laminate panel and method of manufacture2 Jun 2026US 12,643,307 B2CertainTeed Gypsum, Inc.
- Tapered plasterboards and methods for making them13 Jan 2026US 12,523,037 B2CertainTeed Gypsum, Inc.
- Latent heat storage gypsum board and partition structure9 Dec 2025US 12,492,330 B2Yoshino Gypsum Co., Ltd.
- Board and method of manufacturing a board11 Nov 2025US 12,467,258 B2Unilin BV
- Gypsum Board Including a Gypsum Core with Crystals Having an Enhanced Aspect Ratio1 Oct 2026US 2026/0296963 A1Gold Bond Building Products, LLC
- System and method for producing a drywall board with tapered sides24 Sep 2026US 2026/0286696 A1
- Inorganic bearing surface material and bearing wall10 Sep 2026US 2026/0266050 A1Yoshino Gypsum Co., Ltd.
- Apparatus for cracking a gypsum matrix of a gypsum-based panel13 Aug 2026US 2026/0233430 A1Saint-Gobain Placo
- Method for the Treatment of a Gypsum Recyclate13 Aug 2026US 2026/0234059 A1Knauf Gips KG
Most cited
By later US patents
- Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it194US 6,342,284 B12002
- Use of fibrous mat-faced gypsum board in exterior finishing systems for buildings142US 4,647,496 AGeorgia-Pacific Corporation · 1987
- Multi-layer plasterboard121US 3,993,822 AGebr. Knauf Westdeutsche Gipswerke · 1976
- Composite building material118US 6,941,720 B2James Hardie International Finance B. V. · 2005
- Coated fibrous mat faced gypsum board resistant to water and humidity115US 5,397,631 AGeorgia-Pacific Corporation · 1995