F27B 7/04
With longitudinal divisions
Official title: with longitudinal divisions
F27B7/04 (With longitudinal divisions) appears on 12 US grants and 5 published applications in this corpus.
Search patents in F27B- Granted patents
- 12
- Published applications
- 5
- Assignees
- 10
- Inventors
- 27
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 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 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Tube module and tube assembly including same28 Oct 2025US 12,455,116 B2LG Energy Solution, Ltd.
- Method for treating pourable, inorganic grain, and rotary tube suitable for performing the method13 Jun 2023US 11,674,755 B2Heraeus Quarzglas GmbH & Co.KG
- Multitubular rotary heat exchanger12 Apr 2022US 11,300,357 B2Yoshino Gypsum Co., Ltd.
- Method for producing synthetic quartz glass granules28 Feb 2017US 9,580,348 B2Heraeus Quarzglas GmbH & Co.KG
- Method for treatment of oil contaminated filings of magnesium and magnesium alloys16 Aug 1994US 5,338,335 ANorsk Hydro A/S
- Apparatus for recovering active material and method for reusing active material by using same12 Oct 2023US 2023/0327226 A1LG Energy Solution, Ltd.
- Tube Module and Tube Assembly Including Same6 Jul 2023US 2023/0213281 A1LG Energy Solution, Ltd.
- Multitubular rotary heat exchanger18 Feb 2021US 2021/0048254 A1Yoshino Gypsum Co., Ltd.
- Method for treating pourable, inorganic grain, and rotary tube suitable for performing the method19 Nov 2020US 2020/0363129 A1Heraeus Quarzglas GmbH & Co.KG
- Method for producing synthetic quartz glass granules23 Apr 2015US 2015/0107301 A1Heraeus Quarzglas GmbH & Co.KG
Most cited
By later US patents
- Countercurrent heat transfer device for solid particle streams16US 4,639,217 A1987
- Means and method for processing cement raw materials containing fuel of high volatile content12US 4,047,884 AAllis-Chalmers Corporation · 1977
- Trefoil construction for rotary kilns10US 5,330,351 ARRI, Inc. · 1994
- Kiln construction9US 4,659,356 APPG Industries, Inc. · 1987
- Method and apparatus for drying or heat treating granular material8US 4,597,737 AMcGill University · 1986