F21W 2131/20
Lighting for medical use
F21W2131/20 (Lighting for medical use) appears on 798 US grants and 716 published applications in this corpus.
Search patents in F21W- Granted patents
- 798
- Published applications
- 716
- Assignees
- 395
- Inventors
- 1,323
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 10 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 11 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 6 | 0 |
| 2000 | 12 | 0 |
| 2001 | 7 | 3 |
| 2002 | 15 | 14 |
| 2003 | 17 | 20 |
| 2004 | 6 | 11 |
| 2005 | 13 | 18 |
| 2006 | 4 | 18 |
| 2007 | 10 | 12 |
| 2008 | 11 | 20 |
| 2009 | 10 | 27 |
| 2010 | 17 | 23 |
| 2011 | 16 | 24 |
| 2012 | 17 | 24 |
| 2013 | 18 | 26 |
| 2014 | 27 | 22 |
| 2015 | 24 | 42 |
| 2016 | 22 | 38 |
| 2017 | 36 | 51 |
| 2018 | 37 | 49 |
| 2019 | 60 | 49 |
| 2020 | 55 | 60 |
| 2021 | 46 | 36 |
| 2022 | 41 | 30 |
| 2023 | 34 | 36 |
| 2024 | 40 | 37 |
| 2025 | 21 | 12 |
| 2026 | 15 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Illumination device for illuminating a surgical wound29 Sep 2026US 12,746,091 B2Dr. Mach GmbH & Co. KG
- Personal care appliance with light-emitting end cover8 Sep 2026US 12,727,982 B2Shanghai Shift Electrics Co., Ltd.
- Operating lamp with interchangeable functional units18 Aug 2026US 12,710,161 B2Dr. Mach GmbH & Co. KG
- Apparatus and methods for surgical lighting11 Aug 2026US 12,702,521 B2Dignity Health
- Operating lamp assembly comprising an automatically orientable camera30 Jun 2026US 12,667,445 B2Karl Leibinger Asset Management GmbH & Co. KG
- Airframe system and method of controlling airflow8 Oct 2026US 2026/0306210 A1SLD Technology, Inc.
- Operating lamp8 Oct 2026US 2026/0309308 A1F.A.R.O. Fabbrica Apparecchia-Ture Razionali Odontoiatriche S.P.A.
- Operating lamp8 Oct 2026US 2026/0309312 A1FARO Fabbrica Apparecchiature Razionali Odontoiatriche S.p.A.
- Illumination apparatus for medical instrument and medical instrument kit1 Oct 2026US 2026/0298421 A1Smtp Medical Co., Ltd.
- Surgical eyewear lighting systems and methods3 Sep 2026US 2026/0256542 A1Hawkeye Surgical Lighting, Inc.
Most cited
By later US patents
- Thermal management methods and apparatus for lighting devices395US 7,344,279 B2Philips Solid-State Lighting Solutions, Inc. · 2008
- Device for detecting dental caries228US 5,306,144 AKaltenbach & Voigt GmbH & Co. · 1994
- Light expanding system for producing a linear or planar light beam from a point-like light source189US 5,835,661 A1998
- Patient thermal regulation system162US 6,149,674 AHill-Rom, Inc. · 2000
- Medical equipment controller159US 6,351,678 B1Hill-Rom Services, Inc. · 2002