E03D 2201/20
Noise reduction features
E03D2201/20 (Noise reduction features) appears on 19 US grants and 31 published applications in this corpus.
Search patents in E03D- Granted patents
- 19
- Published applications
- 31
- Assignees
- 15
- Inventors
- 84
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 3 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 4 |
| 2022 | 2 | 2 |
| 2023 | 4 | 2 |
| 2024 | 1 | 4 |
| 2025 | 1 | 5 |
| 2026 | 3 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Noise cancellation for toilet2 Jul 2026US 2026/0185342 A1Kohler Co.
- Toilet28 May 2026US 2026/0146433 A1Kohler Co.
- Venturi source for vacuum asisst flush9 Apr 2026US 2026/0098401 A1Kohler Co.
- Dual-trap toilet having improved trapway and improved connecting tube interface4 Sep 2025US 2025/0277360 A1AS America, Inc.
- Dual-trap toilet having improved pressurization and flushing21 Aug 2025US 2025/0263914 A1AS America, Inc.
Most cited
By later US patents
- Primed siphonic flush toilet4US 10,145,097 B2AS IP Holdco, LLC · 2018
- Multiple rinse injections to reduce sound in vacuum toilets3US 10,683,652 B1MAG Aerospace Industries, LLC · 2020
- Flush toilet2US 8,281,424 B2Toto Ltd. · 2012
- Quiet toilet apparatus1US 10,072,406 B22018
- Flush toilet1US 11,414,850 B2Toto Ltd. · 2022