F25B 2700/111
Using an emitter and receiver
Official title: using an emitter and receiver, e.g. sensing by emitting light or other radiation and receiving reflection by a sensor
F25B2700/111 (Using an emitter and receiver) appears on 32 US grants and 15 published applications in this corpus.
Search patents in F25B- Granted patents
- 32
- Published applications
- 15
- Assignees
- 21
- Inventors
- 60
- Latest grant
- 1 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 2 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Automatic vegetation watering apparatus and method1 Apr 2025US 12,262,664 B2
- Refrigerator and controlling method thereof10 May 2022US 11,326,828 B2LG Electronics Inc.
- Controlled defrost for chilled environments11 Jan 2022US 11,221,173 B2Lineage Logistics, LLC
- System and method for defrosting/ de-icing an air-conditioner18 May 2021US 11,009,283 B2Wu Qi Technologies, Inc.
- Refrigerator and controlling method thereof26 Nov 2019US 10,488,098 B2LG Electronics Inc.
- Automatic vegetation watering apparatus and method29 Feb 2024US 2024/0065189 A1
- Controlled defrost for chilled environments13 May 2021US 2021/0140701 A1Lineage Logistics, LLC
- System and Method for Defrosting/ de-icing an Air-Conditioner31 Dec 2020US 2020/0408458 A1Wu Qi Technologies, Inc.
- Refrigerator and controlling method thereof2 Jan 2020US 2020/0003478 A1LG Electronics Inc.
- Refrigerating and air-conditioning apparatus16 Mar 2017US 2017/0074577 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Refrigeration evaporators with ice detectors74US 4,037,427 A1977
- Photoelectric icing detector26US 4,782,331 AU. S. Philips Corporation · 1988
- Compositional state detection system and method23US 4,808,824 A1989
- Method and apparatus for detecting and controlling the formation of ice or frost21US 4,593,533 A1986
- Refrigerator temperature and defrost control17US 4,663,941 AWhirlpool Corporation · 1987