E02D 3/00
Improving or preserving soil or rock
Official title: Improving or preserving soil or rock, e.g. preserving permafrost soil (securing of slopes or inclines E02D17/20; damming or interrupting passage of underground water E02D19/12; improving soil for agricultural purposes A01; soil stabilisation for road building or like purposes E01C21/00, E01C23/10; setting rock anchoring bolts E21D)
E02D3/00 (Improving or preserving soil or rock) appears on 1,591 US grants and 1,284 published applications in this corpus.
Search patents in E02D- Granted patents
- 1,591
- Published applications
- 1,284
- Assignees
- 806
- Inventors
- 2,854
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 19 | 0 |
| 1978 | 33 | 0 |
| 1979 | 12 | 0 |
| 1980 | 12 | 0 |
| 1981 | 15 | 0 |
| 1982 | 12 | 0 |
| 1983 | 22 | 0 |
| 1984 | 16 | 0 |
| 1985 | 15 | 0 |
| 1986 | 23 | 0 |
| 1987 | 30 | 0 |
| 1988 | 25 | 0 |
| 1989 | 24 | 0 |
| 1990 | 23 | 0 |
| 1991 | 23 | 0 |
| 1992 | 16 | 0 |
| 1993 | 27 | 0 |
| 1994 | 28 | 0 |
| 1995 | 16 | 0 |
| 1996 | 25 | 0 |
| 1997 | 24 | 0 |
| 1998 | 28 | 0 |
| 1999 | 35 | 0 |
| 2000 | 24 | 0 |
| 2001 | 31 | 6 |
| 2002 | 23 | 18 |
| 2003 | 28 | 25 |
| 2004 | 22 | 43 |
| 2005 | 28 | 28 |
| 2006 | 29 | 27 |
| 2007 | 14 | 36 |
| 2008 | 16 | 34 |
| 2009 | 15 | 39 |
| 2010 | 24 | 40 |
| 2011 | 29 | 41 |
| 2012 | 29 | 40 |
| 2013 | 24 | 42 |
| 2014 | 35 | 71 |
| 2015 | 51 | 68 |
| 2016 | 50 | 68 |
| 2017 | 62 | 82 |
| 2018 | 70 | 63 |
| 2019 | 82 | 71 |
| 2020 | 60 | 67 |
| 2021 | 54 | 73 |
| 2022 | 56 | 73 |
| 2023 | 48 | 73 |
| 2024 | 55 | 63 |
| 2025 | 62 | 59 |
| 2026 | 45 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E02D 3/02Improving by compacting862
- E02D 3/12Consolidating by placing solidifying or pore-filling substances in the soil510
- E02D 3/11Improving or preserving soil or rock: by thermal, electrical or electro-chemical means117
- E02D 3/005Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like63
Recent patents
- Method for production of a clay powder and a method for soil improvement with the clay powder29 Sep 2026US 12,747,390 B2
- Plate compactor29 Sep 2026US 12,747,564 B2Milwaukee Electric Tool Corporation
- Seal guard for compactor8 Sep 2026US 12,728,670 B2Caterpillar Inc.
- Triangle chocky bar for use on compactor wheel wire guards25 Aug 2026US 12,715,239 B2Caterpillar Inc.
- Wheel assembly for a soil compactor4 Aug 2026US 12,698,609 B2Hamm AG
- Plate compactor1 Oct 2026US 2026/0297864 A1Milwaukee Electric Tool Corporation
- Systems and Methods to Provide Pressed and Aggregate Filled Concavities for Improving Ground Stiffness and Uniformity3 Sep 2026US 2026/0258624 A1Ingios Geotechnics, Inc.
- Settlement monitoring and treatment method for widened embankment with inclined-vertical pile retaining structure, apparatus, and tool27 Aug 2026US 2026/0250924 A1Tianjin University
- Foundation reinforcement equipment integrating ramming, vibroflotation and material feeding functions27 Aug 2026US 2026/0254334 A1Zhejiang Natural Resources Group Co., Ltd.
- Compaction Wheel Mounting System and Method for Use20 Aug 2026US 2026/0243033 A1Rocking B Investments, LLC
Most cited
By later US patents
- Electrical heater360US 6,023,554 AShell Oil Company · 2000
- Vacuum method for removing soil contaminants utilizing thermal conduction heating341US 5,318,116 AShell Oil Company · 1994
- Vacuum method for removing soil contaminants utilizing thermal conduction heating337US 5,190,405 AShell Oil Company · 1993
- Closed cryogenic barrier for containment of hazardous material migration in the earth328US 4,974,425 AConcept R.K.K. Limited · 1990
- Method and apparatus for containment of hazardous material migration in the earth326US 5,050,386 ARKK, Limited · 1991