C04B 33/00
Clay-wares
Official title: Clay-wares (monolithic refractories or refractory mortars C04B35/66; porous products C04B38/00)
C04B33/00 (Clay-wares) appears on 992 US grants and 898 published applications in this corpus.
Search patents in C04B- Granted patents
- 992
- Published applications
- 898
- Assignees
- 688
- Inventors
- 2,388
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 12 | 0 |
| 1978 | 24 | 0 |
| 1979 | 19 | 0 |
| 1980 | 25 | 0 |
| 1981 | 24 | 0 |
| 1982 | 18 | 0 |
| 1983 | 9 | 0 |
| 1984 | 14 | 0 |
| 1985 | 11 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 11 | 0 |
| 1989 | 16 | 0 |
| 1990 | 20 | 0 |
| 1991 | 14 | 0 |
| 1992 | 21 | 0 |
| 1993 | 22 | 0 |
| 1994 | 15 | 0 |
| 1995 | 16 | 0 |
| 1996 | 12 | 0 |
| 1997 | 21 | 0 |
| 1998 | 16 | 0 |
| 1999 | 10 | 0 |
| 2000 | 19 | 0 |
| 2001 | 18 | 0 |
| 2002 | 15 | 17 |
| 2003 | 16 | 29 |
| 2004 | 20 | 27 |
| 2005 | 13 | 31 |
| 2006 | 11 | 24 |
| 2007 | 12 | 32 |
| 2008 | 9 | 40 |
| 2009 | 16 | 35 |
| 2010 | 18 | 47 |
| 2011 | 24 | 41 |
| 2012 | 19 | 28 |
| 2013 | 28 | 27 |
| 2014 | 25 | 42 |
| 2015 | 35 | 33 |
| 2016 | 30 | 42 |
| 2017 | 26 | 40 |
| 2018 | 32 | 49 |
| 2019 | 33 | 36 |
| 2020 | 28 | 53 |
| 2021 | 28 | 53 |
| 2022 | 28 | 32 |
| 2023 | 31 | 43 |
| 2024 | 27 | 39 |
| 2025 | 28 | 27 |
| 2026 | 23 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Highly dense red mud shields for X-ray and γ-ray attenuation29 Sep 2026US 12,747,190 B2Council of Scientific and Industrial Research
- Biochar for stable solidification of heavy metals8 Sep 2026US 12,729,162 B2Chinese Research Academy of Environmental Sciences
- Nanoporous ceramic for atomization core and preparation method thereof11 Aug 2026US 12,703,664 B2Huizhou Happy Vaping Technology Limited
- Building materials and components and methods of making the same4 Aug 2026US 12,698,237 B2University of Wyoming
- Method and apparatus for manufacturing cement using rotary generated thermal energy28 Jul 2026US 12,692,192 B2Coolbrook Oy
- Composition For Producing Components8 Oct 2026US 2026/0308055 A1Kruner Industries AG
- Nanomaterial ceramic sphere, preparation method and application thereof24 Sep 2026US 2026/0285761 A1
- Refining and/or petrochemical facility and apparatus for heating fluids in processes related to refining and petrochemical industries using rotary generated thermal energy17 Sep 2026US 2026/0274747 A1Coolbrook Oy
- Pottery base material17 Sep 2026US 2026/0274752 A1Toto Ltd.
- Ceramic particles for use in a solar power tower17 Sep 2026US 2026/0276244 A1Carbo Ceramics Inc.
Most cited
By later US patents
- Polycrystalline translucent alumina-based ceramic material, uses, and methods166US 6,878,456 B23M Innovative Properties Company · 2005
- Process for making refractory shapes119US 4,150,078 ALava Crucible Refractories Company · 1979
- Light weight abrasive tumbling media and method of making same118US 5,049,166 AWashington Mills Ceramics Corporation · 1991
- Method for sintering ceramic tapes118US 6,447,712 B1University of Washington · 2002
- Lightweight oil and gas well proppants103US 5,030,603 ANorton-Alcoa · 1991