E02F 3/9293
Component parts of suction heads
Official title: {Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like}
E02F3/9293 (Component parts of suction heads) appears on 59 US grants and 43 published applications in this corpus.
Search patents in E02F- Granted patents
- 59
- Published applications
- 43
- Assignees
- 37
- Inventors
- 131
- Latest grant
- 10 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 4 |
| 2015 | 3 | 6 |
| 2016 | 2 | 2 |
| 2017 | 3 | 1 |
| 2018 | 6 | 4 |
| 2019 | 2 | 1 |
| 2020 | 0 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 2 |
| 2023 | 2 | 3 |
| 2024 | 3 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cutter head with suction function and a method for using same10 Sep 2024US 12,084,830 B2
- Method for recovering rare-earth mud, and recovery system10 Sep 2024US 12,084,948 B2Japan Agency for Marine-Earth Science and Technology
- Device for the removal of sludge and/or sand from the bottom of a wetland16 Apr 2024US 11,959,248 B2
- Cutter head with skirt14 Nov 2023US 11,814,813 B2IHC Holland IE B.V.
- Dredging method and apparatus14 Feb 2023US 11,578,472 B2Harwich Haven Authority
- Improvements In and Relating To Underwater Excavation Apparatus27 Mar 2025US 2025/0101710 A1
- Robot for pond desilting16 May 2024US 2024/0159015 A1Guangdong Ocean University
- Suction Dredger for Use on Underwater Hard Soil Layer2 Nov 2023US 2023/0349127 A1China Railway Major Bridge Engineering Group Co.
- Dredge head assembly and related diver-assisted dredging system and methods31 Aug 2023US 2023/0272592 A1J. F. Brennan Co., Inc.
- Method for recovering rare-earth mud, and recovery system13 Apr 2023US 2023/0112110 A1Japan Agency for Marine-Earth Science and Technology
Most cited
By later US patents
- Underwater sand pump146US 4,456,424 AToyo Denki Kogyosho Co., Ltd. · 1984
- Cutter tooth system28US 4,205,469 AAktiebolaget Bofors · 1980
- Deep sea mining apparatus28US 4,681,372 A1987
- Cutter head for suction dredges27US 4,319,415 AVereinigte Edelstahlwerke Aktiengesellschaft · 1982
- Suctioning device for large artificial water bodies27US 9,957,693 B2Crystal Lagoons (Curacao) B.V. · 2018