F27D 3/02
Skids or tracks for heavy objects
F27D3/02 (Skids or tracks for heavy objects) appears on 248 US grants and 101 published applications in this corpus.
Search patents in F27D- Granted patents
- 248
- Published applications
- 101
- Assignees
- 166
- Inventors
- 501
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 9 | 0 |
| 1983 | 11 | 0 |
| 1984 | 10 | 0 |
| 1985 | 10 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 11 | 0 |
| 1994 | 13 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 6 |
| 2003 | 5 | 2 |
| 2004 | 2 | 4 |
| 2005 | 3 | 5 |
| 2006 | 2 | 4 |
| 2007 | 2 | 6 |
| 2008 | 4 | 2 |
| 2009 | 3 | 2 |
| 2010 | 2 | 4 |
| 2011 | 3 | 2 |
| 2012 | 4 | 6 |
| 2013 | 2 | 5 |
| 2014 | 3 | 6 |
| 2015 | 5 | 4 |
| 2016 | 3 | 3 |
| 2017 | 4 | 5 |
| 2018 | 5 | 3 |
| 2019 | 2 | 4 |
| 2020 | 4 | 3 |
| 2021 | 1 | 7 |
| 2022 | 1 | 7 |
| 2023 | 3 | 5 |
| 2024 | 4 | 3 |
| 2025 | 0 | 2 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for heating steel products9 Jun 2026US 12,649,956 B2Danieli & C. Officine Meccaniche SpA
- Device, system and method for detecting transport boats2 Jun 2026US 12,646,631 B2ALD Vacuum Technologies GmbH
- Insulating concrete shell24 Feb 2026US 12,560,273 B2ANDRITZ Metals Germany GmbH
- Method for heating a blank and heating system10 Dec 2024US 12,163,737 B2Autotech Engineering S.L.
- Mounting a ceramic roller in a roller hearth furnace12 Nov 2024US 12,140,375 B2Schwartz GmbH
- Heat treatment system18 Dec 2025US 2025/0383154 A1NGK Insulators, Ltd.
- Method of heat-treating tubing24 Apr 2025US 2025/0129988 A1Plymouth Tube Co.
- Insulating Concrete Shell12 Sep 2024US 2024/0301986 A1ANDRITZ Metals Germany GmbH
- Device for heating steel products29 Feb 2024US 2024/0068062 A1Danieli & C. Officine Meccaniche SpA
- Centering device for metal blanks4 Jan 2024US 2024/0003628 A1EBNER Industrieofenbau GmbH
Most cited
By later US patents
- Quick change conveyor roll sleeve assembly and method93US 8,915,830 B2Pyrotek, Inc. · 2014
- Quick change conveyor roll sleeve assembly and method71US 9,193,532 B2Pyrotek, Inc. · 2015
- Pulling rolls for use in manufacturing sheet glass49US 6,896,646 B2Corning Incorporated · 2005
- Refractory insulation for skid pipes and the like in reheating furnaces43US 4,225,307 A1980
- Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas32US 5,693,288 ANisshin Steel Co., Ltd. · 1997