F27D 1/18
Door frames
Official title: Door frames; Doors, lids or removable covers
F27D1/18 (Door frames) appears on 374 US grants and 184 published applications in this corpus.
Search patents in F27D- Granted patents
- 374
- Published applications
- 184
- Assignees
- 261
- Inventors
- 684
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 9 | 0 |
| 1980 | 9 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 10 | 0 |
| 1984 | 15 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 14 | 0 |
| 1988 | 4 | 0 |
| 1989 | 18 | 0 |
| 1990 | 12 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 14 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 17 | 6 |
| 2002 | 9 | 12 |
| 2003 | 10 | 10 |
| 2004 | 9 | 4 |
| 2005 | 4 | 3 |
| 2006 | 4 | 4 |
| 2007 | 0 | 2 |
| 2008 | 1 | 7 |
| 2009 | 4 | 12 |
| 2010 | 5 | 6 |
| 2011 | 6 | 12 |
| 2012 | 5 | 8 |
| 2013 | 5 | 9 |
| 2014 | 8 | 6 |
| 2015 | 3 | 11 |
| 2016 | 8 | 3 |
| 2017 | 6 | 3 |
| 2018 | 6 | 12 |
| 2019 | 7 | 3 |
| 2020 | 6 | 12 |
| 2021 | 2 | 8 |
| 2022 | 6 | 9 |
| 2023 | 10 | 8 |
| 2024 | 8 | 7 |
| 2025 | 5 | 3 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Semiconductor high pressure annealing device25 Aug 2026US 12,721,088 B2Tokyo Electron Limited
- Drive shaft assembly for a rotary furnace21 Jul 2026US 12,687,340 B2X-energy, LLC
- Highly-insulated ingot mold28 Apr 2026US 12,611,795 B2HarbisonWalker International Holdings, Inc.
- 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
- Heat treatment apparatus8 Oct 2026US 2026/0309423 A1Tokyo Electron Limited
- Furnace tube and control method therefor10 Sep 2026US 2026/0266547 A1Changzhou S.C Exact Equipment Co., Ltd.
- Ovens for equipment such as die attach systems, flip chip bonding systems, clip attach systems, and related methods6 Aug 2026US 2026/0225171 A1Kulicke and Soffa Industries, Inc.
- Spray-cooled furnace roof with gravity drain22 Jan 2026US 2026/0022890 A1Systems Spray-Cooled, Inc.
- Melting furnace and method for melting metal by means of an electrically heatable immersion heating element11 Dec 2025US 2025/0377162 A1
Most cited
By later US patents
- Hot wall rapid thermal processor293US 6,462,310 B1ASML US, Inc. · 2002
- Support mechanism and substrate processing apparatus285US 9,803,926 B2Tokyo Electron Limited · 2017
- Stirring molten metal115US 4,008,884 AAlcan Research and Development Limited · 1977
- Lid and containment vessel for refining molten metal114US 5,718,416 APyrotek, Inc. · 1998
- Thermal induced cooling of industrial furnace components74US 6,244,197 B12001