F16N 2250/34
Transparency
Official title: Transparency; Light; Photo sensor
F16N2250/34 (Transparency) appears on 35 US grants and 34 published applications in this corpus.
Search patents in F16N- Granted patents
- 35
- Published applications
- 34
- Assignees
- 34
- Inventors
- 87
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 3 | 1 |
| 2018 | 2 | 3 |
| 2019 | 2 | 4 |
| 2020 | 5 | 3 |
| 2021 | 3 | 3 |
| 2022 | 1 | 2 |
| 2023 | 2 | 3 |
| 2024 | 1 | 0 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Liquid deterioration determination device and hydraulic unit28 Oct 2025US 12,455,230 B2Daikin Industries, Ltd.
- Analysis device for detecting solid particles in a lubricant28 Jan 2025US 12,210,010 B2Safran Aircraft Engines
- Roll stand21 Jan 2025US 12,203,503 B2SMS group GmbH
- Oil deterioration diagnosis device15 Oct 2024US 12,117,434 B2Mito Kogyo Company Limited
- Method and a system for monitoring a lubricated mechanical system4 Jul 2023US 11,691,762 B2Airbus Helicopters
- Method for monitoring the condition of lubricating oil of industrial equipment and system for monitoring the condition of lubricating oil of industrial equipment26 Jun 2025US 2025/0207724 A1Aa Linhares Comercio E ServiçOs Eireli
- Roll stand20 Jul 2023US 2023/0228295 A1SMS group GmbH
- Analysis device for detecting solid particles in a lubricant18 May 2023US 2023/0152298 A1Safran Aircraft Engines
- Oil deterioration diagnosis device16 Feb 2023US 2023/0046877 A1Mito Kogyo Company Limited
- Liquid deterioration determination device and hydraulic unit12 May 2022US 2022/0146412 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Lubricant circulation diagnostic and modeling system59US 5,968,371 ANelson Industries, Inc. · 1999
- Engine oil indicator35US 4,306,525 AGeneral Motors Corporation · 1981
- Integrated in-line oil monitoring apparatus31US 8,155,891 B2Korea Institute of Science and Technology · 2012
- Oil deterioration detection apparatus and apparatus for detecting particles in liquid24US 5,548,393 ANippondenso Co., Ltd. · 1996
- Oil system, in particular a hydraulic or lubricating oil system8US 6,746,610 B2Mahle Filtersysteme GmbH · 2004