B43L
Articles for writing or drawing upon
Official title: ARTICLES FOR WRITING OR DRAWING UPON; {WRITING OR DRAWING AIDS;} ACCESSORIES FOR WRITING OR DRAWING (workshop equipment for marking-out work B25H7/00; teaching hand-writing or drawing G09B11/00)
B43L (Articles for writing or drawing upon) appears on 2,603 US grants and 1,773 published applications in this corpus.
Search patents in B43L- Granted patents
- 2,603
- Published applications
- 1,773
- Assignees
- 866
- Inventors
- 4,052
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 47 | 0 |
| 1977 | 44 | 0 |
| 1978 | 50 | 0 |
| 1979 | 55 | 0 |
| 1980 | 50 | 0 |
| 1981 | 50 | 0 |
| 1982 | 49 | 0 |
| 1983 | 43 | 0 |
| 1984 | 57 | 0 |
| 1985 | 65 | 0 |
| 1986 | 64 | 0 |
| 1987 | 57 | 0 |
| 1988 | 58 | 0 |
| 1989 | 61 | 0 |
| 1990 | 67 | 0 |
| 1991 | 51 | 0 |
| 1992 | 64 | 0 |
| 1993 | 48 | 0 |
| 1994 | 52 | 0 |
| 1995 | 43 | 0 |
| 1996 | 43 | 0 |
| 1997 | 30 | 0 |
| 1998 | 42 | 0 |
| 1999 | 56 | 0 |
| 2000 | 32 | 0 |
| 2001 | 46 | 14 |
| 2002 | 52 | 34 |
| 2003 | 32 | 60 |
| 2004 | 50 | 68 |
| 2005 | 63 | 101 |
| 2006 | 46 | 95 |
| 2007 | 69 | 114 |
| 2008 | 44 | 92 |
| 2009 | 51 | 94 |
| 2010 | 52 | 89 |
| 2011 | 64 | 85 |
| 2012 | 57 | 65 |
| 2013 | 55 | 78 |
| 2014 | 55 | 72 |
| 2015 | 46 | 78 |
| 2016 | 52 | 58 |
| 2017 | 54 | 72 |
| 2018 | 38 | 73 |
| 2019 | 59 | 77 |
| 2020 | 78 | 76 |
| 2021 | 60 | 59 |
| 2022 | 53 | 63 |
| 2023 | 54 | 44 |
| 2024 | 44 | 38 |
| 2025 | 36 | 39 |
| 2026 | 15 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B43L 13/00Drawing instruments, or writing or drawing appliances or accessories not otherwise provided806
- B43L 1/00Repeatedly-usable boards or tablets for writing or drawing495
- B43L 7/00Straightedges477
- B43L 19/00Erasers, rubbers, or erasing devices315
- B43L 23/00Sharpeners for pencils or leads228
- B43L 9/00Circular curve-drawing or like instruments178
- B43L 3/00Writing or drawing underlays134
- B43L 5/00Drawing boards96
All 15 main groupsShow fewer
Recent patents
- Speed square with highly visible level6 Oct 2026US 12,754,003 B2
- Playboard15 Sep 2026US 12,734,787 B2
- Customizable teaching cuboid8 Sep 2026US 12,728,665 B2
- Blotting material with profiled region, method of manufacturing same, and uses thereof11 Aug 2026US 12,703,197 B2FEI Company
- Light-emitting drawing board14 Jul 2026US 12,680,690 B1
- Layout tool24 Sep 2026US 2026/0285080 A1Jessem Tool Corporation
- Fire shaver17 Sep 2026US 2026/0273795 A1Outdoor Element, LLC
- Heat erasable eraser17 Sep 2026US 2026/0273991 A1Guangzhou Youxiang Cultural Supplies Co.,Ltd
- Multi-Purpose Animal Enclosure Device30 Jul 2026US 2026/0215392 A1
- Multifunctional Smart Markerboard with Dynamic LED Illumination and Audio Integration30 Jul 2026US 2026/0217053 A1
Most cited
By later US patents
- Magnetic display system142US 5,057,363 AJapan Capsular Products, Inc. · 1991
- Displaying magnetic panel and its display device134US 4,143,472 APilot Man-Nen-Hitsu Kabushiki Kaisha · 1979
- Magnetic display system122US 5,411,398 AJapan Capsular Products, Inc. · 1995
- Flexible magnet attractant display mat121US 5,503,891 AMarflex International Inc. · 1996
- Ergonomic input-device holder120US 6,726,070 B22004