E02D 27/35
Foundations formed in frozen ground
Official title: Foundations formed in frozen ground, e.g. in permafrost soil
E02D27/35 (Foundations formed in frozen ground) appears on 31 US grants and 26 published applications in this corpus.
Search patents in E02D- Granted patents
- 31
- Published applications
- 26
- Assignees
- 16
- Inventors
- 83
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 0 | 0 |
| 2010 | 0 | 4 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 5 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 3 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Seismic damping pier foundation system for seismic isolation7 Jul 2026US 12,674,289 B2Cover Technologies, Inc.
- Anti-frost heave pile foundation support device21 Oct 2025US 12,448,751 B1Northwest Institute of Eco-Environment and Resources, Cas
- Method and system for controlling ventilation cooling type permafrost subgrade based on energy dynamic balance20 May 2025US 12,305,339 B1Cccc First Highway Consultants Co., Ltd.
- Light-concentrating anti-frost anti-heave heat gathering device and subgrade thereof20 May 2025US 12,305,889 B2Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Method for insulating sub-soil4 Feb 2020US 10,550,538 B2Total SA
- Seismic damping pier foundation system for seismic isolation24 Sep 2026US 2026/0286628 A1Cover Technologies, Inc.
- Seismic damping peir foundation system for seismic isolation25 Jan 2024US 2024/0026617 A1Cover Technologies, Inc.
- Light-concentrating anti-frost anti-heave heat gathering device and subgrade thereof29 Sep 2022US 2022/0307729 A1Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Frost Protected Foundation System and Method of Using14 Feb 2019US 2019/0048555 A1
- Method for insulating sub-soil30 Mar 2017US 2017/0089026 A1Total SA
Most cited
By later US patents
- Self-refrigeration keel-type foundation system27US 5,618,134 A1997
- Permafrost stabilizing heat pipe assembly26US 4,036,286 AMcDonnell Douglas Corporation · 1977
- Insulation system for soil25US 5,447,389 AAbeltech Incorporated · 1995
- Permafrost structural support with integral heat pipe means15US 3,935,900 AMcDonnell Douglas Corporation · 1976
- Split air convection pile9US 4,111,258 AExxon Production Research Company · 1978