C04B 20/04
Heat treatment
C04B20/04 (Heat treatment) appears on 195 US grants and 209 published applications in this corpus.
Search patents in C04B- Granted patents
- 195
- Published applications
- 209
- Assignees
- 187
- Inventors
- 620
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 2 |
| 2006 | 0 | 6 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 6 |
| 2012 | 5 | 7 |
| 2013 | 2 | 5 |
| 2014 | 4 | 4 |
| 2015 | 3 | 5 |
| 2016 | 4 | 6 |
| 2017 | 7 | 9 |
| 2018 | 5 | 11 |
| 2019 | 8 | 8 |
| 2020 | 6 | 9 |
| 2021 | 5 | 17 |
| 2022 | 7 | 13 |
| 2023 | 14 | 20 |
| 2024 | 11 | 24 |
| 2025 | 11 | 23 |
| 2026 | 18 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Light weight ceramic aggregates made by agglomerating ceramic fibers22 Sep 2026US 12,741,908 B2Unifrax I LLC
- Hydrophobic concrete and asphalt18 Aug 2026US 12,709,572 B2Nant Holdings IP, LLC
- Biocarbon compositions with optimized compositional parameters, and processes for producing the same16 Jun 2026US 12,655,061 B2Carbon Technology Holdings, LLC
- Hydrophobic concrete and asphalt2 Jun 2026US 12,643,820 B2Nant Holdings IP, LLC
- Gravel circulation dry electrostatic precipitator26 May 2026US 12,636,660 B2Metro Engineering Co., Ltd.
- Fiber material for cement/concrete reinforcement, method for producing fiber material for cement/concrete reinforcement, and fiber-reinforced cement composition8 Oct 2026US 2026/0308058 A1Toyota Jidosha Kabushiki Kaisha
- Cementitious reagents, methods of manufacturing and uses thereof1 Oct 2026US 2026/0296966 A1Terra Co2 Technology Holdings, Inc.
- Use of a marl for the preparation of a pozzolanic material24 Sep 2026US 2026/0285755 A1Vicat
- Compositions of controlled crystal growths and methods of producing the same10 Sep 2026US 2026/0265127 A1
- Compositions, methods, and systems related to transformation of vaterite particles13 Aug 2026US 2026/0234055 A1Arelac, Inc.
Most cited
By later US patents
- Ceramic spheroids having low density and high crush resistance139US 4,632,876 AMinnesota Mining and Manufacturing Company · 1986
- Osteogenic proteins129US 5,266,683 AStryker Corporation · 1993
- Composite graphite sheets113US 4,234,638 ANippon Carbon Co., Ltd. · 1980
- Process for manufacturing a lightweight refractory product45US 4,307,051 ACawoods Refractories Limited · 1981
- Lightweight, reduced density fire rated gypsum panels41US 8,323,785 B2United States Gypsum Company · 2012