G03B 23/10
Drum or disc carrier
Official title: drum or disc carrier
G03B23/10 (Drum or disc carrier) appears on 45 US grants and 25 published applications in this corpus.
Search patents in G03B- Granted patents
- 45
- Published applications
- 25
- Assignees
- 29
- Inventors
- 96
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 3 |
| 2018 | 4 | 4 |
| 2019 | 6 | 5 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 4 | 2 |
| 2024 | 0 | 1 |
| 2025 | 0 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Story projector6 Jan 2026US 12,517,421 B2Shenzhen Bolong Technology Co. Ltd.
- Projection toy26 Sep 2023US 11,768,426 B1
- Atmosphere starry sky light for festival entertainment27 Jun 2023US 11,686,950 B2Zhongshan Bolang Electronic Technology Co., Ltd.
- Lamp for projecting a nebula and a starry sky7 Feb 2023US 11,572,991 B2Xiamen Longstar Lighting Co., Ltd.
- Projection structure, projection method, and corresponding vehicle lamp and vehicle10 Jan 2023US 11,549,660 B2Valeo Vision
- Story projector16 Oct 2025US 2025/0321475 A1Shenzhen Bolong Technology Co. Ltd.
- Multifunctional Image Mapping Device28 Aug 2025US 2025/0271747 A1
- System and method for calibration of optical measurement devices15 May 2025US 2025/0155319 A1Chroma Ate Inc.
- Projection lamp15 Feb 2024US 2024/0053664 A1
- Projection toy14 Sep 2023US 2023/0288789 A1
Most cited
By later US patents
- Film projector toy32US 4,756,614 ATomy Kogyo Co., Inc. · 1988
- Image projection apparatus23US 7,182,472 B2Emerald Innovations, LLC · 2007
- Projecting flashlight21US 5,321,449 A1994
- Hand crank generator-powered rotary slide projector14US 4,105,314 A1978
- Compact low-cost portable slide presentation toy14US 5,769,684 ALup Shun Metal & Plastic Ware Factory Limited · 1998