C04B 20/066
In shaft or vertical furnaces
Official title: {in shaft or vertical furnaces}
C04B20/066 (In shaft or vertical furnaces) appears on 21 US grants and 20 published applications in this corpus.
Search patents in C04B- Granted patents
- 21
- Published applications
- 20
- Assignees
- 10
- Inventors
- 23
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 1 |
| 2019 | 3 | 1 |
| 2020 | 1 | 3 |
| 2021 | 1 | 2 |
| 2022 | 0 | 1 |
| 2023 | 2 | 3 |
| 2024 | 5 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Expandable silica particles and methods for making and using the same17 Mar 2026US 12,577,150 B2Valunor AG
- Bitumen product25 Mar 2025US 12,258,461 B2Omya International AG
- Production of foamed sand using near infrared3 Sep 2024US 12,077,474 B2ThermProTEC GmbH
- Device for producing expanded mineral granulated material18 Jun 2024US 12,013,184 B2
- Expandable silica particles and methods for making and using the same7 May 2024US 11,976,000 B2Valunor AG
- Expandable silica particles and methods for making and using the same2 Jul 2026US 2026/0184620 A1Valunor AG
- Device and method for producing supplementary cementitious materials2 Jan 2025US 2025/0002405 A1Cemgreen APS
- Expandable silica particles and methods for making and using the same26 Sep 2024US 2024/0317638 A1Valunor AG
- Production of foamed sand using near infrared1 Feb 2024US 2024/0034677 A1ThermPro TEC GmbH
- Device for producing expanded granulated material21 Sep 2023US 2023/0296323 A1Binder GmbH
Most cited
By later US patents
- Energy efficient perlite expansion process23US 4,347,155 AManville Service Corporation · 1982
- Method and apparatus for bloating granular material15US 4,519,777 A1985
- Method and apparatus for continuously burning particles in air stream in a vertical furnace4US 4,427,372 ANittetsu Mining Co., Ltd. · 1984
- Method and device for producing an expanded granulate3US 10,611,686 B2Binder GmbH · 2020
- Method for the closed-cell expansion of mineral material3US 9,809,495 B2Binder GmbH · 2017