B43L 1/00
Repeatedly-usable boards or tablets for writing or drawing
Official title: Repeatedly-usable boards or tablets for writing or drawing (drawing-boards B43L5/00)
B43L1/00 (Repeatedly-usable boards or tablets for writing or drawing) appears on 495 US grants and 577 published applications in this corpus.
Search patents in B43L- Granted patents
- 495
- Published applications
- 577
- Assignees
- 272
- Inventors
- 1,049
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 10 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 10 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 10 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 17 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 8 | 7 |
| 2003 | 7 | 21 |
| 2004 | 8 | 14 |
| 2005 | 12 | 25 |
| 2006 | 6 | 25 |
| 2007 | 8 | 26 |
| 2008 | 4 | 22 |
| 2009 | 8 | 30 |
| 2010 | 8 | 26 |
| 2011 | 19 | 26 |
| 2012 | 9 | 21 |
| 2013 | 14 | 30 |
| 2014 | 16 | 32 |
| 2015 | 23 | 32 |
| 2016 | 14 | 29 |
| 2017 | 17 | 32 |
| 2018 | 14 | 29 |
| 2019 | 27 | 26 |
| 2020 | 27 | 26 |
| 2021 | 23 | 20 |
| 2022 | 16 | 22 |
| 2023 | 14 | 13 |
| 2024 | 10 | 13 |
| 2025 | 15 | 21 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B43L 1/008Repeatedly-usable boards or tablets for writing or drawing: with magnetic action129
- B43L 1/04Blackboards117
- B43L 1/12Repeatedly-usable boards or tablets for writing or drawing: having translucent writing surfaces100
- B43L 1/002Chemical details54
- B43L 1/004Repeatedly-usable boards or tablets for writing or drawing: with illuminating devices52
- B43L 1/02Slates1
Recent patents
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- Magnetic sheet, magnetic writing system, drawing method, and erasing method20 Jan 2026US 12,530,092 B2Zero Lab Co., Ltd.
- Hardcoat composition comprising methyl or ethyl trialkoxy silane, articles and methods2 Dec 2025US 12,486,373 B23M Innovative Properties Company
- 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
- Phonetic game system28 May 2026US 2026/0145050 A1
- Freestanding sensory learning and display tool with incorporated reusable writing surface14 May 2026US 2026/0134793 A1
- Transformable Whiteboard Desk Device30 Apr 2026US 2026/0114607 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
- Magnetic display panel using reversal magnetism97US 4,368,952 APilot Man-Nen-Hitsu Kabushiki Kaisha · 1983