B03C 3/47
Flat
Official title: flat, e.g. plates, discs, gratings
B03C3/47 (Flat) appears on 476 US grants and 652 published applications in this corpus.
Search patents in B03C- Granted patents
- 476
- Published applications
- 652
- Assignees
- 347
- Inventors
- 1,137
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 7 | 1 |
| 2002 | 1 | 6 |
| 2003 | 6 | 5 |
| 2004 | 5 | 9 |
| 2005 | 8 | 12 |
| 2006 | 10 | 14 |
| 2007 | 10 | 4 |
| 2008 | 4 | 9 |
| 2009 | 9 | 13 |
| 2010 | 7 | 18 |
| 2011 | 6 | 15 |
| 2012 | 8 | 19 |
| 2013 | 16 | 17 |
| 2014 | 13 | 22 |
| 2015 | 14 | 27 |
| 2016 | 15 | 29 |
| 2017 | 29 | 39 |
| 2018 | 21 | 35 |
| 2019 | 33 | 39 |
| 2020 | 24 | 50 |
| 2021 | 37 | 48 |
| 2022 | 31 | 63 |
| 2023 | 25 | 58 |
| 2024 | 42 | 43 |
| 2025 | 45 | 42 |
| 2026 | 18 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Membrane for collecting airborne particles22 Sep 2026US 12,741,287 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Air conditioning apparatus15 Sep 2026US 12,734,472 B2LG Electronics Inc.
- Electrostatic precipitator and control method thereof8 Sep 2026US 12,728,424 B2Samsung Electronics Co., Ltd.
- Electric precipitator for press mold and press mold using same8 Sep 2026US 12,728,425 B2Creative Technology Ltd
- Electrostatic precipitator and control method thereof8 Sep 2026US 12,728,426 B2Samsung Electronics Co., Ltd.
- Caliper-type electrostatic precipitator and vehicle braking device including same1 Oct 2026US 2026/0298299 A1Korea Institute of Machinery & Materials
- Air conditioner17 Sep 2026US 2026/0276225 A1Samsung Electronics Co., Ltd.
- Ionic Personal Exhalant Filter30 Jul 2026US 2026/0215495 A1Philter Labs, Inc.
- Ducted Ventilation System, Particle Collection Unit and Method30 Jul 2026US 2026/0218929 A1E. Khoury Holding B.V.
- Devices and methods to reduce air pollution and global warming23 Jul 2026US 2026/0208207 A1Temple University of the Commonwealth System of Higher Education
Most cited
By later US patents
- Air cleaner using ionic wind123US 4,643,745 ANippon Soken, Inc. · 1987
- Electro-kinetic air transporter-conditioner122US 6,176,977 B1Sharper Image Corporation · 2001
- Electrostatic air treatment and movement system97US 5,024,685 AAstra-Vent AB · 1991
- Apparatus for measuring impurity concentrations in a liquid95US 5,098,657 ATSI Incorporated · 1992
- Two-stage electrostatic filter95US 5,993,521 ATL-Vent AB · 1999