B24B 3/36
Sharpening cutting edges: of cutting blades
Official title: of cutting blades (B24B3/58 takes precedence)
B24B3/36 (Sharpening cutting edges: of cutting blades) appears on 634 US grants and 495 published applications in this corpus.
Search patents in B24B- Granted patents
- 634
- Published applications
- 495
- Assignees
- 295
- Inventors
- 930
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 11 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 13 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 16 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 14 | 0 |
| 1990 | 13 | 0 |
| 1991 | 12 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 15 | 0 |
| 1998 | 9 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 13 | 6 |
| 2002 | 12 | 10 |
| 2003 | 11 | 9 |
| 2004 | 15 | 11 |
| 2005 | 15 | 13 |
| 2006 | 12 | 17 |
| 2007 | 10 | 18 |
| 2008 | 6 | 16 |
| 2009 | 7 | 14 |
| 2010 | 9 | 12 |
| 2011 | 12 | 18 |
| 2012 | 13 | 14 |
| 2013 | 16 | 11 |
| 2014 | 16 | 23 |
| 2015 | 24 | 20 |
| 2016 | 21 | 17 |
| 2017 | 20 | 23 |
| 2018 | 18 | 27 |
| 2019 | 13 | 23 |
| 2020 | 20 | 25 |
| 2021 | 10 | 28 |
| 2022 | 22 | 31 |
| 2023 | 25 | 36 |
| 2024 | 19 | 28 |
| 2025 | 27 | 25 |
| 2026 | 8 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cutting implement29 Sep 2026US 12,746,697 B2KYOCERA Corporation
- Sharpener21 Jul 2026US 12,686,096 B2
- Method of preparing a meat skinner blade and meat skinner blade prepared thereby14 Jul 2026US 12,678,908 B2
- Electric knife sharpener for elastically grinding double edges30 Jun 2026US 12,667,927 B2Newness Ongoing Technology Co., Limited
- Magnetic sharpening jig comprising a flexible contact element16 Jun 2026US 12,654,275 B2Horl 1993 GmbH
- Magnetic Sharpening Jig Comprising A Flexible Contact Element17 Sep 2026US 2026/0273684 A1Horl 1993 GmbH
- Sharpening angle guide13 Aug 2026US 2026/0233361 A1
- Knife sharpener2 Jul 2026US 2026/0183903 A1Yuyao Norton Electric Appliance Co., Ltd.
- Knife sharpening mechanism with an adjustable sharpening angle and an electric knife sharpener25 Jun 2026US 2026/0175344 A1
- Method for automatically controlling the triggering of the sharpening of the cutting edge of a cutting blade for a cutting machine25 Jun 2026US 2026/0175367 A1Amvalor
Most cited
By later US patents
- Bathroom appliance for concurrently sharpening razor blades and treating gum tissue by spaced pressure pulses of liquid128US 4,454,866 A1984
- Method and apparatus for sharpening a knife73US 4,807,399 AEdgecraft Corporation · 1989
- Method and apparatus for knife and blade sharpening68US 4,627,194 A1986
- High speed precision sharpening apparatus68US 5,611,726 AEdgecraft Corporation · 1997
- Sharpening apparatus65US 6,012,971 AEdgecraft Corporation · 2000