B26B 21/18
Involving blades with two cutting edges
Official title: involving blades with two cutting edges (B26B21/22 - B26B21/38 take precedence)
B26B21/18 (Involving blades with two cutting edges) appears on 21 US grants and 29 published applications in this corpus.
Search patents in B26B- Granted patents
- 21
- Published applications
- 29
- Assignees
- 10
- Inventors
- 46
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 4 |
| 2017 | 1 | 2 |
| 2018 | 2 | 5 |
| 2019 | 0 | 3 |
| 2020 | 3 | 2 |
| 2021 | 2 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 4 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Razor21 Oct 2025US 12,447,640 B2Guangzhou Weidi Technology Co., Ltd.
- Internal gradient materials, implements and methods12 Nov 2024US 12,138,818 B2Verd Steel, Inc.
- Razor having a hair-cutting fiber5 Nov 2024US 12,134,203 B2Koninklijke Philips N. V.
- Press and methods for cutting and folding a safety razor to form a 2-blade system for a razor head, and assembly28 May 2024US 11,992,963 B2
- Razor with pivoting head30 Jan 2024US 11,883,970 B2Leaf Shave Company
- Shaving razor13 Feb 2025US 2025/0050522 A1The Gillette Company
- Shaver with Replaceable Cartridge26 Dec 2024US 2024/0424701 A1Universal Beauty Products, Inc.
- Razor8 Aug 2024US 2024/0261991 A1Guangzhou Weidi Technology Co., Ltd.
- Razor blade having an asymmetrical edge16 Nov 2023US 2023/0364818 A1Dorco Co., Ltd.
- Press and methods for cutting and folding a safety razor to form a 2-blade system for a razor head, and assembly20 Jul 2023US 2023/0226707 A1
Most cited
By later US patents
- Wedge shaped razor apparatus59US 4,791,724 A1988
- Arcuate razor head26US 4,208,791 A1980
- Razor with adjustable blade positioning22US 4,241,500 AAmerican Safety Razor Company · 1980
- Modular safety razor with adjustable blade angle10US 9,505,142 B2Rockwell Razors Corporation · 2016
- Double edge blade razor8US 4,037,321 APhilip Morris Incorporated · 1977