B43L 7/00
Straightedges
Official title: Straightedges (guides; curve rulers or templets B43L13/20; straightedges characterised by the provision of indicia or the like for measuring, e.g. rulers or tapes with measuring scales or marks for direct reading, G01B)
B43L7/00 (Straightedges) appears on 477 US grants and 313 published applications in this corpus.
Search patents in B43L- Granted patents
- 477
- Published applications
- 313
- Assignees
- 106
- Inventors
- 644
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 10 | 0 |
| 1985 | 12 | 0 |
| 1986 | 10 | 0 |
| 1987 | 13 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 11 | 0 |
| 1991 | 10 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 3 | 0 |
| 1995 | 12 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 2 |
| 2002 | 6 | 5 |
| 2003 | 5 | 6 |
| 2004 | 14 | 18 |
| 2005 | 13 | 19 |
| 2006 | 17 | 28 |
| 2007 | 27 | 29 |
| 2008 | 13 | 14 |
| 2009 | 17 | 17 |
| 2010 | 19 | 19 |
| 2011 | 15 | 11 |
| 2012 | 12 | 14 |
| 2013 | 14 | 12 |
| 2014 | 8 | 8 |
| 2015 | 8 | 10 |
| 2016 | 6 | 3 |
| 2017 | 8 | 10 |
| 2018 | 6 | 6 |
| 2019 | 12 | 11 |
| 2020 | 9 | 14 |
| 2021 | 10 | 12 |
| 2022 | 8 | 15 |
| 2023 | 21 | 10 |
| 2024 | 7 | 10 |
| 2025 | 5 | 3 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B43L 7/10Plural straightedges relatively movable182
- B43L 7/027Plural non-adjustable straightedges fixed at right angles106
- B43L 7/005Combined with other drawing aids102
- B43L 7/02T-squares and other similar squares61
- B43L 7/007Straightedges: with holding means38
- B43L 7/04Straightedges: with rollers20
- B43L 7/08Straightedges: with arrangements for attaching additional drawing equipment12
- B43L 7/033Plural non-adjustable straightedges forming non-right angles11
All 9 subgroupsShow fewer
Recent patents
- Speed square with highly visible level6 Oct 2026US 12,754,003 B2
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- Straight-edge drawing guide19 May 2026US 12,629,958 B2
- Electronic device for selective transmission of downlink signal to sensor controller10 Mar 2026US 12,572,228 B2Wacom Co., Ltd.
- Combination square and method of adjusting the same3 Feb 2026US 12,540,807 B2Klein Tools, Inc.
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- Electronic device for selective transmission of downlink signal to sensor controller18 Jun 2026US 2026/0169578 A1Wacom Co., Ltd.
- Tile Tool23 Apr 2026US 2026/0109171 A1Crowne Tools LLC
- Multi-Purpose Framer's Speed Square26 Mar 2026US 2026/0084457 A1
Most cited
By later US patents
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- Method and apparatus for determining acetabular component positioning88US 8,267,938 B22012
- Multipurpose square81US 5,727,325 A1998
- Transparent measuring device with multicolored lines58US 4,779,346 A1988
- Roofing speed square and method of use54US 5,170,568 A1992