Patent landscapes › Home & cleaning
Is a smoke detector patented?
Short answer: specific designs of a smoke detector have been patented many times, but "a smoke detector" as a general idea is not what is protected. What matters is the exact combination of features in your version.
What our index shows
- 845 US and WO patent publications since 2000 have a title matching “smoke detectoralarm” or a close variant (our index of 9.7 million patent families; one publication per family).
- Among the 594 best keyword matches we examined, 201 were published in 2020 or later, and the earliest was published in 2000.
- Most frequent assignees in those matches: HONEYWELL INT INC (32), CARRIER CORP (30), SIEMENS SCHWEIZ AG (27), MICROCHIP TECH INC (14).
- Most common patent classes (CPC subclasses): G08B (559), G01N (126), G01J (20), A62C (15).
Counts come from keyword matching on titles and abstracts, so they are indicative, not a legal count. Some matches are different products that share a word.
14 real patent publications related to a smoke detector
- Smoke detector light source and sensor to emit and detect polarized light US-2026038353-A1 2026 · MICROCHIP TECH INC
A system and method for a photoelectric smoke detector using polarized light is disclosed. The system may include a light source to emit a beam of light at a polarity of interest. The system may also include a light sensor to dete…
View on Google Patents - Method and a system for improving alarm reliability of smoke fire detector US-12505731-B2 2025 · BENGBU EI FIRE ELECTRONICS CO LTD
The present invention discloses a method and a system for improving the alarm reliability of a smoke fire detector. The method comprises the following steps: S1, Set an updated background threshold, an alarm threshold and an aeros…
View on Google Patents - Verifying a false alarm on a smoke detector using an internal air quality sensor US-12288460-B2 2025 · CARRIER CORP
A smoke detector system is provided. The smoke detector system includes a smoke detection element. The smoke detector system further includes an internal air quality (IAQ) sensor. The IAQ sensor is disposed and configured to confi…
View on Google Patents - Gas turbine fire detection system including cooling system upstream of aspirating smoke detector, and related method US-12092035-B2 2024 · GEN ELECTRIC
A fire detection system for a gas turbine system including fire risk zones is provided. The system includes a pipe intake port proximate to each of the fire risk zones within a gas turbine system enclosure, and a manifold in fluid…
View on Google Patents - Heat sensor and smoke and heat fire detector US-11670150-B2 2023 · PANASONIC IP MAN CO LTD
A heat sensor includes a base and a heat sensor body. The base is to be mounted onto a mounting surface of a building. The heat sensor body has a bottomed cylindrical shape and is to be attached to the base. The heat sensor body i…
View on Google Patents - Fire alarm confirmation method for smoke detector, apparatus and terminal device WO-2020107331-A1 2020 · SHENZHEN TANDA TECH CO LTD
Provided are a fire alarm confirmation method for a smoke detector, apparatus and a terminal device, comprising: when fire alarm occurrence information is detected, acquiring a temperature value collected by a temperature sensor, …
View on Google Patents - Dual-loop smoke and fire detector system and method US-9355541-B1 2016 · BOEING CO
A hazardous condition detection system for an enclosure includes at least three detectors and a controller. Each detector is mounted within the enclosure. Each detector is configured to output a signal representing a first lower l…
View on Google Patents - Tobacco smoke detector, hazard detector, and method of distinguishing tobacco smoke from fire smoke US-2014361901-A1 2014 · SIEMENS AG
A tobacco smoke detector has a gas-sensitive semiconductor sensor device (in particular, GasFET sensor) with a first gas-sensitive layer which reacts to tobacco smoke and a second gas-sensitive layer which reacts to fire products.…
View on Google Patents - Fire detector for monitoring a room by means of a combination of smoke density measurement and temperature measurement US-2013033377-A1 2013 · HOSEIT WINRICH
A fire detector monitors a room and triggers a fire alarm. The fire detector has a smoke sensor and a temperature sensor for measuring a smoke density and a temperature. When a temperature threshold value and/or a smoke density th…
View on Google Patents - Fire or smoke detector with high false alarm rejection performance US-7760102-B2 2010 · SIEMENS AG
An apparatus for detecting a hazardous condition includes an optical module for measuring scattered light caused by the hazardous condition, a temperature sensor, a humidity sensor, and a processing unit coupled to receive signals…
View on Google Patents - Christmas tree ornament with integrated smoke detector, heat detector, motion sensor, and fire extinguishing means US-7679521-B1 2010 · GAVIA CESAR
The invention is a Christmas tree ornament that incorporates a smoke or fire detector, a burglar alarm operated by a motion sensor, and connects to an integrated fire extinguishing system. The Christmas tree ornament resembles a s…
View on Google Patents - Method of utilizing existing fire alarm systems and existing smoke detectors to detect aerolized radioactive material US-7196631-B1 2007 · DZIEKAN MICHAEL
A method of utilizing existing fire panel infrastructure to fight terrorism. The fire alarm systems ionization type smoke detectors, in addition to detecting the presence of smoke, would also detect the presence of airborne radioa…
View on Google Patents - Fire alarm algorithm using smoke and gas sensors US-7142105-B2 2006 · SOUTHWEST SCIENCES INC
An apparatus for and method of detecting fires comprising detecting (with one or more detectors) levels of carbon monoxide, carbon dioxide, and smoke in an ambient environment, computing (using a processor) over time rates of incr…
View on Google Patents - Smoke detector with fire drill system US-2005258973-A1 2005 · KIDSMART CORP
A smoke detector having fire drill system that includes a delay period. The fire drill system enables a user to actuate a fire drill and leave a room in which the smoke detector is located before an audible alarm is produced by th…
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What this means for your idea
Because patents cover specific combinations of features, the useful question is not “has a smoke detector been patented?” but “has my combination of features been described before?” Household products tend to differ in the mechanism (how something attaches, folds, dispenses or cleans) rather than the basic idea.
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Guides that help with this
First-look landscape. Not exhaustive. Not legal advice. This page lists keyword-matched publications from a limited database; it does not say whether any product is or isn't covered by a patent, whether a patent is still in force, or whether your idea is patentable. Consult a registered patent attorney or agent.