B43L 13/20
Curve rulers or templets
B43L13/20 (Curve rulers or templets) appears on 189 US grants and 96 published applications in this corpus.
Search patents in B43L- Granted patents
- 189
- Published applications
- 96
- Assignees
- 49
- Inventors
- 286
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 1 |
| 2003 | 0 | 4 |
| 2004 | 3 | 7 |
| 2005 | 6 | 8 |
| 2006 | 3 | 4 |
| 2007 | 3 | 8 |
| 2008 | 1 | 2 |
| 2009 | 3 | 8 |
| 2010 | 3 | 4 |
| 2011 | 4 | 2 |
| 2012 | 3 | 7 |
| 2013 | 5 | 3 |
| 2014 | 3 | 6 |
| 2015 | 2 | 2 |
| 2016 | 2 | 5 |
| 2017 | 4 | 0 |
| 2018 | 2 | 4 |
| 2019 | 2 | 3 |
| 2020 | 7 | 4 |
| 2021 | 3 | 4 |
| 2022 | 5 | 1 |
| 2023 | 5 | 3 |
| 2024 | 1 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for circle and curve drawing template19 Aug 2025US 12,391,061 B2
- UV-light drawing activity18 Mar 2025US 12,251,646 B2WeCool Toys Inc.
- Custom piece-together quilt template23 Apr 2024US 11,965,276 B1
- Ground penetrating radar stencil and system for using the same17 Oct 2023US 11,789,178 B2Butler Scanning, Inc.
- Drawing assisting tool29 Aug 2023US 11,738,591 B2
- Stencil grip mat with reusable adhesive strip28 May 2026US 2026/0145458 A1
- Multifunctional ruler for design and multi-scale measurements1 Jan 2026US 2026/0002765 A1
- Uv-light drawing activity17 Jul 2025US 2025/0229195 A1WeCool Toys Inc.
- Spin and/or spiral decorating device for artwork27 Mar 2025US 2025/0100320 A1Crayola LLC
- A-Z Mark in the Middle! Tracing Tool8 Aug 2024US 2024/0265824 A1
Most cited
By later US patents