IP Library Granted Patent US 12,550,879
Granted Patent B2
US 12,550,879 · App. 18/956,036 · Granted Feb 17, 2026

Automated robotic bedbug eradication device for mattresses

Inventors: Guijun Li (Hong Kong, CN); Yang Xu (Hong Kong, CN); Kong Wai Lee (Hong Kong, CN); Haosong Zhong (Hong Kong, CN); Minseong Kim (Hong Kong, CN); Jing Lin (Hong Kong, CN); Wing Yan Poon (Hong Kong, CN); Qiaoyaxiao Yuan (Hong Kong, CN); Huan Liu (Hong Kong, CN); Yee Him Timothy Chan (Hong Kong, CN)
Assignee: The Hong Kong University of Science and Technology
A01M1/2094B25J5/007B25J11/0085
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,550,879
App. No.
18/956,036
Granted
Feb 17, 2026
Kind
B2
Abstract

An automated dry-heating bedbug eradication device for pest eradication is provided herewith. By the use of a specifically fabricated graphene-coated copper heating film, the dry-heating device of the present invention can readily achieve a temperature that is higher than the well-established temperature of 45° C., which is proven lethal to all life stages of bedbugs, and also effective in ant eradication. The device is carefully designed to achieve high portability and maneuverability, and is customizable to accommodate the needs to sanitize mattresses of different sizes in different settings, ranging from home use to commercial hotel or hostel uses. The device of the present invention is also equipped with wireless connectability to mobile applications, and infrared sensor and PID systems for remote real-time monitoring and control.

Claims (18)

1 . A portable, remote-controllable dry-heating infestation control device for bedbug eradication on mattresses, comprising:

a steering chassis equipped with multiple self-cleaning wheels or tracks;

a dry-heating compartment mounted with a printed circuit board (PCB);

a servo motor-equipped automatic elevation system connected to the dry-heating compartment;

an automatic control and feedback monitoring system connected to the dry-heating compartment;

a circuit board housing; and

a detachable handle;

wherein each of the multiple self-cleaning wheels or tracks is coated with a superhydrophobic material; and

wherein the dry-heating component comprises a fan unit, a graphene-coated copper heater film and a servo motor-equipped automatic elevation system.

2 . The device of claim 1 , wherein the graphene-coated copper heater film is fabricated by coating a copper film on a polyimide substrate using physical vapor deposition, and subjecting to laser scribing for patterning.

3 . The device of claim 1 , wherein the graphene-coated copper heater film has a thickness of less than 160 μm.

4 . The device of claim 1 , wherein the superhydrophobic material is selected from polytetrafluoroethylene, polydimethylsiloxane, wax-based coating, laser-induced aluminum or laser-induced graphene.

5 . The device of claim 4 , wherein the sliding angle of the superhydrophobic material is less than 6°.

6 . The device of claim 1 , wherein the dry-heating compartment has a maximum output of 330° C.

7 . The device of claim 1 , wherein the automatic control and feedback monitoring system comprises an infrared sensor and a Proportional-Integral-Derivative (PID) control system.

8 . The device of claim 1 , further comprising a wireless Internet-of-Things (IoT) module connectable to a mobile application for remote control and real-time monitoring.

9 . A method of pest eradication on a mattress comprising: Utilizing the device of claim 1 to eradicate a pest; wherein the pest comprises at least bedbug eggs, bedbug nymphs, bedbug adults and ants.

10 . The method of claim 9 , wherein the mattress has a 0.5 mm thickness, and a mortality rate of bedbug eggs, bedbug nymphs, bedbug adults and ants in said mattress is at least 99% under a heating temperature of 60° C. at an operational period of 30 seconds.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 25, 2024
From: LI, GUIJUN; XU, YANG; LEE, KONG WAI; ZHONG, HAOSONG; KIM, MINSEONG; LIN, JING; POON, WING YAN; YUAN, QIAOYAXIAO; LIU, HUAN; CHAN, YEE HIM TIMOTHY
To: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Reel/Frame 069387/0021 →
Continuity (2)
Provisional Application 63602437 · Nov 23, 2023
Related Publication 20250169487A1 · May 29, 2025
References Cited (12)
US 11297819B2 · Kieffer · 2022 [cited by examiner]
US 20080061252A1 · Garcia · 2008 [cited by examiner]
US 20140053364A1 · Vasudeva · 2014 [cited by examiner]
US 20200075972A1 · Jorgenson · 2020 [cited by examiner]
US 20210195885A1 · Szozda · 2021 [cited by examiner]
US 20250318704A1 · Karren · 2025 [cited by examiner]
CN 207185718U · 2018 [cited by applicant]
CN 106075493B · 2019 [cited by applicant]
CN 113017332B · 2022 [cited by applicant]
CN 113826596B · 2023 [cited by applicant]
WO 2023037649A1 · 2023 [cited by applicant]
Stephen A. Kells. “Nonchemical Control of Bed Bugs,” American Entomologist, vol. 52, Issue 2, 2006, 109-110. [cited by applicant]