A61F 9/062
With movable polarising filter discs
Official title: {with movable polarising filter discs}
A61F9/062 (With movable polarising filter discs) appears on 16 US grants and 13 published applications in this corpus.
Search patents in A61F- Granted patents
- 16
- Published applications
- 13
- Assignees
- 8
- Inventors
- 24
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 3 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Automatic darkening filter with simplified set-up17 Jun 2025US 12,329,689 B23M Innovative Properties Company
- Welding protector comprising panel and AR coating layer10 Dec 2024US 12,161,590 B2Otos Wing Co., Ltd.
- Automatic darkening filter with simplified set-up14 Nov 2023US 11,813,200 B23M Innovative Properties Company
- Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers16 Aug 2022US 11,413,190 B23M Innovative Properties Company
- Vision-protective headgear with automatic darkening filter comprising an array of switchable shutters2 Nov 2021US 11,160,687 B23M Innovative Properties Company
- Automatic darkening filter with simplified set-up11 Sep 2025US 2025/0281331 A13M Innovative Properties Company
- Automatice darkening filter with simplified set-up15 Feb 2024US 2024/0050278 A13M Innovative Properties Company
- Automatic darkening filter with simplified set-up18 Aug 2022US 2022/0257421 A13M Innovative Properties Company
- Welding protector comprising panel and ar coating layer3 Mar 2022US 2022/0062051 A1Otos Wing Co., Ltd.
- Welding protective equipment with optical functional layer and panel control technology applied thereto27 Jan 2022US 2022/0023102 A1Otos Wing Co., Ltd.
Most cited
By later US patents
- Electro-optic welding lens assembly using multiple liquid crystal light shutters and polarizers103US 4,039,254 A1977
- Eye protection device for welding helmets which reduces obliquely incident light65US 5,515,186 AOSD Envizion Company · 1996
- Electro-optic welding helmet lens assembly41US 4,039,803 AMack Gordon · 1977
- Variable neutral density laser goggles39US 4,511,225 A1985
- Liquid crystal welding glass shields having improved optical angular properties30US 5,825,441 A1998