E01H 3/04
Fixed devices
Official title: Fixed devices, e.g. permanently- installed flushing means ({fixed applicators for defrosting agents E01H10/00; fixed flushing installations for tramway rails E01B21/02; built-in irrigation devices for sports grounds E01C13/02}; hydrants E03B9/00)
E01H3/04 (Fixed devices) appears on 6 US grants and 4 published applications in this corpus.
Search patents in E01H- Granted patents
- 6
- Published applications
- 4
- Assignees
- 3
- Inventors
- 12
- Latest grant
- 7 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cleaning system and method for a spraying system7 Jun 2022US 11,352,755 B2Caterpillar SARL
- Air purification-functioning road and method for purifying polluted air over road2 Mar 2004US 6,699,577 B2Ishihara Sangyo Kaisha, Ltd.
- System for applying a liquid, such as a deicing liquid, upon a pavement surface17 Sep 2002US 6,450,731 B1
- Sprinkler system and sprinkling method for vehicle running test course11 Apr 2000US 6,047,897 AMarubeni Plant Contractor, Inc.
- Water relief valve for a drainage system30 Dec 1997US 5,701,931 A
- Installation for Capturing Floods and Excess Water in Drainage Systems, As Well As Maintenance of Road Surfaces According to Warnings, Phenomena, and Weather Parameters Measured in Real Time27 Mar 2025US 2025/0101696 A1
- Cleaning system and method for a spraying system20 Feb 2020US 2020/0056340 A1Caterpillar SARL
- Surface cooling device17 Apr 2008US 2008/0087742 A1
- Air purification-functioning road and method for purifying polluted air over road10 Jul 2003US 2003/0129412 A1Ishihara Sangyo Kaisha, Ltd.
Most cited
By later US patents
- Air purification-functioning road and method for purifying polluted air over road11US 6,699,577 B2Ishihara Sangyo Kaisha, Ltd. · 2004
- System for applying a liquid, such as a deicing liquid, upon a pavement surface10US 6,450,731 B12002
- Sprinkler system and sprinkling method for vehicle running test course8US 6,047,897 AMarubeni Plant Contractor, Inc. · 2000
- Water relief valve for a drainage system3US 5,701,931 A1997