B43L 1/004
Repeatedly-usable boards or tablets for writing or drawing: with illuminating devices
Official title: {with illuminating devices}
B43L1/004 (Repeatedly-usable boards or tablets for writing or drawing: with illuminating devices) appears on 52 US grants and 51 published applications in this corpus.
Search patents in B43L- Granted patents
- 52
- Published applications
- 51
- Assignees
- 30
- Inventors
- 87
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 5 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 3 | 5 |
| 2012 | 1 | 0 |
| 2013 | 2 | 6 |
| 2014 | 3 | 2 |
| 2015 | 6 | 3 |
| 2016 | 1 | 3 |
| 2017 | 2 | 3 |
| 2018 | 1 | 5 |
| 2019 | 3 | 3 |
| 2020 | 3 | 1 |
| 2021 | 2 | 4 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Panoptic display surface28 Apr 2026US 12,611,887 B1
- High-brightness liquid crystal handwriting device21 Jan 2025US 12,204,221 B1Wicue USA INC.
- Multiple-polarization cloaking for projected and writing surface view screens15 Nov 2022US 11,500,280 B2Steelcase Inc.
- Multifunctional illuminated lighting pad20 Sep 2022US 11,448,887 B2
- Multiple-polarization cloaking for projected and writing surface view screens31 Aug 2021US 11,106,124 B2
- Multifunctional Smart Markerboard with Dynamic LED Illumination and Audio Integration30 Jul 2026US 2026/0217053 A1
- High-brightness liquid crystal handwriting device2 Jan 2025US 2025/0004340 A1Wicue USA INC.
- Multiple-Polarization Cloaking for Projected and Writing Surface View Screens25 Nov 2021US 2021/0364905 A1Steelcase Inc.
- Lightboard system23 Sep 2021US 2021/0294553 A1CIMA Network Inc.
- Multifunctional Illuminated Lighting Pad22 Apr 2021US 2021/0116711 A1
Most cited
By later US patents
- Projection markerboard57US 5,361,164 AWalltalkers · 1994
- Electronic print board54US 4,587,568 AOki Electric Industry Co., Ltd. · 1986
- Phosphorescent marking system28US 4,590,381 APineapple Industries, Inc. · 1986
- Luminescent display and copying apparatus and method for using same28US 5,324,202 AThe Ohio Art Company · 1994
- Multi-functional rack for a whiteboard21US 7,942,372 B22011