G03B 21/22
Soundproof bodies
G03B21/22 (Soundproof bodies) appears on 52 US grants and 60 published applications in this corpus.
Search patents in G03B- Granted patents
- 52
- Published applications
- 60
- Assignees
- 39
- Inventors
- 131
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 7 |
| 2004 | 5 | 3 |
| 2005 | 3 | 9 |
| 2006 | 8 | 6 |
| 2007 | 3 | 4 |
| 2008 | 1 | 5 |
| 2009 | 1 | 3 |
| 2010 | 3 | 3 |
| 2011 | 2 | 1 |
| 2012 | 4 | 2 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 3 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ambient image projection device7 Jul 2026US 12,675,037 B2Zhongshan Jiaen Optoelectronics Co., Ltd.
- Projection lens module and projector27 Feb 2024US 11,914,274 B2Coretronic Corporation
- Projector4 Oct 2022US 11,460,758 B2Seiko Epson Corporation
- Sound absorber and projector4 Jan 2022US 11,217,218 B2Seiko Epson Corporation
- Light source module and projection device9 Nov 2021US 11,169,435 B2Coretronic Corporation
- Ambient image projection device5 Feb 2026US 2026/0036894 A1Zhongshan Bolong Electronic Technology Co.,Ltd.
- Projection lens module and projector15 Dec 2022US 2022/0397812 A1Coretronic Corporation
- Projector6 Jan 2022US 2022/0004088 A1Seiko Epson Corporation
- Light source module and projection device21 Jan 2021US 2021/0018827 A1Coretronic Corporation
- Actuator module and projector having the same27 Aug 2020US 2020/0272041 A1Qisda Corporation
Most cited
By later US patents
- Projection image display apparatus having a noise removal filter portion30US 8,104,902 B2Sanyo Electric Co., Ltd. · 2012
- Projector tilt adjust system comprising a latching mechanism for a height-adjusting system27US 6,461,002 B1Primax Electronics Ltd. · 2002
- Rear projection optical system26US 6,761,458 B2Minolta Co., Ltd. · 2004
- Adjustable security enclosure20US 7,029,133 B2Hard Steal Security Corp. · 2006
- Projector apparatus15US 7,845,803 B2Sanyo Electric Co., Ltd. · 2010