F27D 1/1858
Doors
Official title: {Doors}
F27D1/1858 (Doors) appears on 143 US grants and 72 published applications in this corpus.
Search patents in F27D- Granted patents
- 143
- Published applications
- 72
- Assignees
- 106
- Inventors
- 245
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 3 |
| 2002 | 5 | 6 |
| 2003 | 4 | 3 |
| 2004 | 3 | 1 |
| 2005 | 3 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 4 |
| 2009 | 3 | 2 |
| 2010 | 1 | 3 |
| 2011 | 2 | 2 |
| 2012 | 2 | 4 |
| 2013 | 1 | 5 |
| 2014 | 3 | 1 |
| 2015 | 2 | 4 |
| 2016 | 2 | 1 |
| 2017 | 2 | 1 |
| 2018 | 4 | 5 |
| 2019 | 3 | 1 |
| 2020 | 1 | 3 |
| 2021 | 1 | 7 |
| 2022 | 2 | 5 |
| 2023 | 3 | 4 |
| 2024 | 6 | 3 |
| 2025 | 3 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Substrate processing apparatus16 Dec 2025US 12,498,174 B2Semes Co., Ltd.
- Injector configured for arrangement within a reactor of a vertical furnace and vertical furnace9 Sep 2025US 12,410,518 B2ASM IP Holding B. V.
- Shutter apparatus and substrate treating apparatus including the same9 Sep 2025US 12,411,427 B2Semes Co., Ltd.
- Furnace tube and control method therefor10 Sep 2026US 2026/0266547 A1Changzhou S.C Exact Equipment Co., Ltd.
- Heat treatment apparatus17 Jul 2025US 2025/0230980 A1Noritake Co., Limited
- Heat treatment system and atmosphere substitution structure of heat treatment furnace26 Dec 2024US 2024/0426554 A1NGK Insulators, Ltd.
- Scrap metal push gate assembly6 Jun 2024US 2024/0183616 A1Gpre IP, LLC
- Heat recovery steam generator access door assembly and method of installation14 Mar 2024US 2024/0085113 A1Power & Industrial Services Corporation
Most cited
By later US patents
- Hot wall rapid thermal processor293US 6,462,310 B1ASML US, Inc. · 2002
- Stirring molten metal115US 4,008,884 AAlcan Research and Development Limited · 1977
- Thermal induced cooling of industrial furnace components74US 6,244,197 B12001
- Pressure vessel closure device50US 5,228,825 AThe M. W. Kellogg Company · 1993
- Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas32US 5,693,288 ANisshin Steel Co., Ltd. · 1997