A01D 34/53
Helically shaped cutting members
A01D34/53 (Helically shaped cutting members) appears on 47 US grants and 55 published applications in this corpus.
Search patents in A01D- Granted patents
- 47
- Published applications
- 55
- Assignees
- 23
- Inventors
- 78
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 3 |
| 2006 | 1 | 2 |
| 2007 | 0 | 2 |
| 2008 | 3 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 6 |
| 2017 | 3 | 1 |
| 2018 | 3 | 4 |
| 2019 | 1 | 5 |
| 2020 | 4 | 5 |
| 2021 | 6 | 4 |
| 2022 | 2 | 2 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 5 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Brush cutter rotor2 Jun 2026US 12,642,189 B29422-8053 Quebec Inc.
- Walk reel mower with side plate cutouts for drop out reel6 Jan 2026US 12,514,156 B2The Toro Company
- Trimmer line for string trimmers23 Dec 2025US 12,501,853 B2Shakespeare Company
- Weeding machine and weeding method for seedlings in paddy field8 Jul 2025US 12,349,612 B2Zhejiang University
- Walk reel mower with adjustable handle assembly29 Apr 2025US 12,284,938 B2The Toro Company
- Adjustable mower assembly1 Oct 2026US 2026/0293801 A1Textron Inc.
- Walk reel mower with side plate cutouts for drop out reel7 May 2026US 2026/0123574 A1The Toro Company
- Walk reel mower with handle assembly4 Dec 2025US 2025/0366391 A1The Toro Company
- Configurable lift actuator for lawn mower cutting unit2 Jan 2025US 2025/0000017 A1Textron Inc.
- Walk reel mower with pivotal shield24 Oct 2024US 2024/0349640 A1The Toro Company
Most cited
By later US patents
- Crop processor29US 4,550,554 AEzra C. Lundahl, Inc. · 1985
- Crop processor22US 5,005,342 AEzra C. Lundahl, Inc. · 1991
- Cutting reel adjusting system21US 7,121,073 B2Deere & Company · 2006
- Crop processor11US 5,305,586 ALundahl Research, Inc. · 1994
- Cutting reel adjusting system11US 7,377,092 B2Deere & Company · 2008