F23Q 2/46
Friction wheels
Official title: Friction wheels; Arrangement of friction wheels
F23Q2/46 (Friction wheels) appears on 54 US grants and 12 published applications in this corpus.
Search patents in F23Q- Granted patents
- 54
- Published applications
- 12
- Assignees
- 25
- Inventors
- 53
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Lighter19 Sep 2024US 2024/0310046 A1
- Lighter with Replaceable Flint Member4 May 2023US 2023/0135739 A1Arrow Lighter Inc.
- Lighter17 Mar 2022US 2022/0082255 A1
- Cigarette Lighter with a New Fuel Release System29 Apr 2021US 2021/0123599 A1Tokai Seiki Co. (H.K.), Ltd.
- Push-Button Type Flint Ignition Mechanism Capable of Automatic Resetting14 Jul 2016US 2016/0201906 A1
Most cited
By later US patents
- Gas lighter equipped with a safety lock67US 4,784,602 ATokai Corporation · 1988
- Gas lighter equipped with a safety lock46US 4,784,601 ATokai Corporation · 1988
- Childproof gas lighter45US 5,090,893 ACricket · 1992
- Safety lighter41US 5,224,854 ASIBJET - Societe Industrielle du Briquet Jetable · 1993
- Cigarette lighter34US 5,096,414 AParnat S.A. · 1992