E02F 3/143
Chains
Official title: {chains; chain links; scraper chains (chains or chain guides E21C25/28)}
E02F3/143 (Chains) appears on 45 US grants and 37 published applications in this corpus.
Search patents in E02F- Granted patents
- 45
- Published applications
- 37
- Assignees
- 25
- Inventors
- 90
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 4 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 3 | 3 |
| 2006 | 3 | 3 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 2 |
| 2010 | 3 | 3 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 4 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Forklift hydraulic motor based industrial driver apparatus27 May 2025US 12,313,096 B2One Pass Innovators, LLC
- Latching system for dipper22 Aug 2023US 11,732,435 B2Caterpillar Global Mining LLC
- Control unit for determining the position of an implement in a work machine29 Jun 2021US 11,047,105 B2Cpac Systems AB
- Controlling earthmoving machine6 Apr 2021US 10,968,601 B2Novatron Oy
- Wide-end trencher boom10 Sep 2019US 10,407,863 B2Vermeer Manufacturing Company
- Link for an excavating chain and associated excavating chain3 Aug 2023US 2023/0243108 A1Matisa Materiel Industriel S.A.
- Latching system for dipper11 Aug 2022US 2022/0251800 A1Caterpillar Global Mining LLC
- Forklift hydraulic motor based industrial driver apparatus23 Jun 2022US 2022/0196041 A1One Pass Innovators, LLC
- Trenching apparatus and a method of trenching23 Dec 2021US 2021/0395974 A1Mastenbroek Ltd.
- Foundation With Chain Blades During Construction and Its Construction Method12 Dec 2019US 2019/0376252 A1
Most cited
By later US patents
- Drive sprocket for a roller chain for material removal implement35US 6,415,532 B1The Toro Company · 2002
- Bucket chain excavator19US 5,228,220 A1993
- Apparatus for continuously dredging submarine mineral deposit16US 4,226,035 A1980
- Chain for trencher apparatus14US 5,248,188 A1993
- Cutting chain14US 6,832,443 B1The Charles Machine Works, Inc. · 2004