C04B 20/12
Multiple coating or impregnating
C04B20/12 (Multiple coating or impregnating) appears on 125 US grants and 134 published applications in this corpus.
Search patents in C04B- Granted patents
- 125
- Published applications
- 134
- Assignees
- 112
- Inventors
- 395
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 3 |
| 2003 | 0 | 1 |
| 2004 | 4 | 5 |
| 2005 | 2 | 4 |
| 2006 | 1 | 3 |
| 2007 | 2 | 3 |
| 2008 | 0 | 6 |
| 2009 | 1 | 4 |
| 2010 | 3 | 8 |
| 2011 | 7 | 6 |
| 2012 | 3 | 4 |
| 2013 | 6 | 8 |
| 2014 | 4 | 8 |
| 2015 | 2 | 5 |
| 2016 | 6 | 8 |
| 2017 | 6 | 3 |
| 2018 | 6 | 2 |
| 2019 | 6 | 4 |
| 2020 | 2 | 11 |
| 2021 | 5 | 6 |
| 2022 | 3 | 8 |
| 2023 | 5 | 9 |
| 2024 | 5 | 6 |
| 2025 | 8 | 3 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Preparation device and method for asphalt concrete containing modified acid aggregates8 Sep 2026US 12,729,160 B2Xi'an University of Technology
- Article made of conglomerate material and method for manufacturing such article18 Nov 2025US 12,473,233 B2
- Compressed salt objects7 Oct 2025US 12,435,001 B2Yissum Research Development Company of the Hebrew University of Jerusalem
- Granulate material and associated coating that is low in odor and emissions, particularly a construction element coating, for example a floor coating, based on a radical polymerization23 Sep 2025US 12,421,170 B2Sidec NV
- Sizing compositions for glass fibers and sized fiber glass products9 Sep 2025US 12,410,093 B2Electric Glass Fiber America, LLC
- Method for fully utilizing old mortar on surfaces of recycled coarse aggregates10 Sep 2026US 2026/0265136 A1Wuhan University
- Process for improving crack resistance of recycled aggregate concrete27 Aug 2026US 2026/0250197 A1Wuhan University
- Densified engineered lignocellulosic composite and method of preparing thereof25 Jun 2026US 2026/0176199 A1
- Concrete composition for water treatment structure having self-healing and waterproofing capabilities by using self-healing admixture and concrete water treatment structure using same28 May 2026US 2026/0146000 A1HUBCON Co., Ltd.
- Multifunctional damage responsive polymeric fiber14 May 2026US 2026/0132081 A1Drexel University
Most cited
By later US patents
- Methods of generating gas in well treating fluids144US 6,722,434 B2Halliburton Energy Services.Inc. · 2004
- Surface modified particles and method of making the same104US 5,401,313 AHarcros Pigments, Inc. · 1995
- Methods of generating gas in well treating fluids60US 6,992,048 B2Halliburton Energy Services.Inc. · 2006
- Multilayer interference pigments58US 6,689,205 B1Merck Patent Gesellschaft · 2004
- Coating compositions for glass fibres52US 3,954,490 APilkington Brothers Limited · 1976