E04F 21/28
Implements for finishing work on buildings: for glazing
Official title: for glazing (glass cutters C03B33/10)
E04F21/28 (Implements for finishing work on buildings: for glazing) appears on 76 US grants and 49 published applications in this corpus.
Search patents in E04F- Granted patents
- 76
- Published applications
- 49
- Assignees
- 42
- Inventors
- 136
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 4 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 4 |
| 2007 | 2 | 4 |
| 2008 | 1 | 3 |
| 2009 | 1 | 2 |
| 2010 | 2 | 4 |
| 2011 | 3 | 7 |
| 2012 | 1 | 2 |
| 2013 | 4 | 0 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 4 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 3 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Putty Knife Brush Attachment Device4 Apr 2024US 2024/0110394 A1
- Combination Tool Assembly11 Aug 2022US 2022/0250226 A1
- Window tinting tool16 Dec 2021US 2021/0387448 A1Tri-Edge Industries, LLC
- Utility tool25 Feb 2021US 2021/0053239 A1
- Enhanced glazing device, assembly and method for operating the same24 Dec 2020US 2020/0399909 A1
Most cited
By later US patents
- Putty knife and scraper handle134US 5,956,799 A1999
- Knife40US 4,989,320 AC. & E. Fein GmbH · 1991
- Caulk bead tool37US 6,219,878 B1Vancouver Tool Corporation · 2001
- Applicator container33US 5,800,144 AOSI Sealants, Inc. · 1998
- Controlled dispensing of material31US 6,630,028 B2Glass Equipment Development, Inc. · 2003