B27L 7/04
Conical screws
B27L7/04 (Conical screws) appears on 34 US grants and 8 published applications in this corpus.
Search patents in B27L- Granted patents
- 34
- Published applications
- 8
- Assignees
- 12
- Inventors
- 43
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 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 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 1 | 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 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Combination Splitter and Grapple Technology5 Mar 2026US 2026/0061659 A1US Pride Products, LLC
- Log splitter for mobile applications10 Apr 2025US 2025/0114965 A1
- Log-splitting machine23 Feb 2023US 2023/0057237 A1Twister Machinery, LLC
- Portable wood log splitter4 Aug 2022US 2022/0242005 A1
- Hands Free Wood Splitter24 Sep 2009US 2009/0236011 A1
Most cited
By later US patents
- Helical head comminuting shear15US 4,053,004 AThe United States of America as represented by the Secretary of Agriculture · 1977
- Log splitting apparatus15US 4,091,851 ATrans-America Power Equipment, Inc. · 1978
- Wood splitter14US 4,315,534 AArnold Industries, Inc. · 1982
- Log splitting apparatus13US 3,993,113 A1976
- Tractor mounted log splitter10US 4,027,709 A1977