F27D 1/1866
Door-frames
Official title: {Door-frames}
F27D1/1866 (Door-frames) appears on 12 US grants and 13 published applications in this corpus.
Search patents in F27D- Granted patents
- 12
- Published applications
- 13
- Assignees
- 11
- Inventors
- 29
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 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 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 2 | 2 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Closure for concrete products curing kiln21 Apr 2026US 12,607,407 B2Besser Company
- Heat recovery steam generator access door assembly and method of installation7 Apr 2026US 12,595,963 B2Power & Industrial Services Corporation
- Furnace and method for treating material10 Sep 2024US 12,084,792 B2Onejoon GmbH
- Slag door for a melting furnace28 Mar 2023US 11,614,283 B2Danieli & C. Officine Meccaniche SpA
- Combination vacuum and over-pressure process chamber and methods related thereto21 Jun 2022US 11,367,640 B2Yield Engineering Systems, Inc.
- Heat recovery steam generator access door assembly and method of installation14 Mar 2024US 2024/0085113 A1Power & Industrial Services Corporation
- Closure for concrete products curing kiln3 Aug 2023US 2023/0243589 A1Besser Company
- Device and method for thermal or thermo-chemical treatment of material19 May 2022US 2022/0155013 A1
- Furnace and method for treating material22 Jul 2021US 2021/0222331 A1Onejoon GmbH
- Heating unit of multi-chamber type4 Feb 2021US 2021/0037612 A1Ajin Industrial Co., Ltd.
Most cited
By later US patents
- Slag discharge door apparatus for electric furnace18US 8,409,494 B2Hyundai Steel Company · 2013
- Modular door jamb and lintel system for industrial furnaces7US 4,977,838 AM. H. Detrick Co., Limited · 1990
- Combination vacuum and over-pressure process chamber and methods related thereto4US 10,490,431 B2Yield Engineering Systems, Inc. · 2019
- Fill door having angled movement1US 6,729,245 B22004