E02F 9/28
Small metalwork for digging elements
Official title: Small metalwork for digging elements, e.g. teeth {scraper bits (ploughs for agriculture A01B15/00; teeth of harrows A01B23/02)}
E02F9/28 (Small metalwork for digging elements) appears on 1,356 US grants and 1,248 published applications in this corpus.
Search patents in E02F- Granted patents
- 1,356
- Published applications
- 1,248
- Assignees
- 344
- Inventors
- 1,529
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 21 | 0 |
| 1978 | 28 | 0 |
| 1979 | 11 | 0 |
| 1980 | 25 | 0 |
| 1981 | 17 | 0 |
| 1982 | 25 | 0 |
| 1983 | 9 | 0 |
| 1984 | 15 | 0 |
| 1985 | 10 | 0 |
| 1986 | 12 | 0 |
| 1987 | 15 | 0 |
| 1988 | 22 | 0 |
| 1989 | 12 | 0 |
| 1990 | 13 | 0 |
| 1991 | 20 | 0 |
| 1992 | 14 | 0 |
| 1993 | 12 | 0 |
| 1994 | 14 | 0 |
| 1995 | 17 | 0 |
| 1996 | 14 | 0 |
| 1997 | 11 | 0 |
| 1998 | 22 | 0 |
| 1999 | 20 | 0 |
| 2000 | 20 | 0 |
| 2001 | 12 | 4 |
| 2002 | 18 | 14 |
| 2003 | 7 | 19 |
| 2004 | 20 | 35 |
| 2005 | 15 | 25 |
| 2006 | 16 | 22 |
| 2007 | 17 | 28 |
| 2008 | 10 | 31 |
| 2009 | 17 | 23 |
| 2010 | 30 | 25 |
| 2011 | 22 | 40 |
| 2012 | 32 | 43 |
| 2013 | 27 | 54 |
| 2014 | 35 | 63 |
| 2015 | 52 | 75 |
| 2016 | 58 | 64 |
| 2017 | 46 | 92 |
| 2018 | 67 | 68 |
| 2019 | 72 | 63 |
| 2020 | 66 | 80 |
| 2021 | 52 | 60 |
| 2022 | 53 | 77 |
| 2023 | 54 | 79 |
| 2024 | 59 | 55 |
| 2025 | 42 | 67 |
| 2026 | 38 | 42 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bucket with multiple radius wrapper6 Oct 2026US 12,753,567 B2Caterpillar Inc.
- Tool retention system with external locking mechanism6 Oct 2026US 12,753,584 B2Caterpillar Inc.
- Shroud retention system for a work tool29 Sep 2026US 12,747,566 B2Caterpillar Inc.
- Pin for coupling between a wear element and a support of an earth-moving machine and coupling system22 Sep 2026US 12,742,314 B2Metalogenia Research & Technologies S. L.
- Excavating assembly system with collared fastening system22 Sep 2026US 12,742,315 B2Hensley Industries, Inc.
- Reinforced wear member8 Oct 2026US 2026/0308891 A1Hensley Industries, Inc.
- Work machine with system for wear edge lifespan prediction8 Oct 2026US 2026/0308892 A1Deere & Company
- Wear member assembly with collared fastening assembly1 Oct 2026US 2026/0297909 A1Hensley Industries, Inc.
- Laminated wear component adapter for material handling implement17 Sep 2026US 2026/0275686 A1
- Lock assembly for a tip and adapter17 Sep 2026US 2026/0275687 A1Caterpillar Inc.
Most cited
By later US patents
- Excavating tooth212US 5,709,043 AESCO Corporation · 1998
- Tip to adapter interface200US 5,423,138 ACaterpillar Inc. · 1995
- Extensible lock190US 5,937,550 AESCO Corporation · 1999
- Excavating tooth185US 4,231,173 AESCO Corporation · 1980
- Streamlining bit assemblies for road milling, mining and trenching equipment157US 6,685,273 B1The Sollami Company · 2004