# US 12,765,534 B1 · Method of treating red palm weevil infestation in palm trees

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- Number: US 12,765,534 B1
- Document ID: US12765534B1
- Status: Granted
- Kind: B1
- Application number: 19/557,219
- Filed: 2026-03-05
- Granted: 2026-10-20
- Earliest claimed: 2025-08-08
- Assignees: Prince Mohammad Bin Fahd University
- Applicants: Prince Mohammad Bin Fahd University
- Inventors: Kwan San Hui; Abdullah A. Alhamdan; Faramarz Djavanroodi
- Web page: https://patentgrep.com/patent/US12765534B1

## CPC

- A01M 1/226: {by using waves, fields or rays, e.g. sound waves, microwaves, electric waves, magnetic fields, light rays}
- A01G 7/06: Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
- A01M: CATCHING, TRAPPING OR SCARING OF ANIMALS (appliances for catching swarms or drone-catching A01K57/00; fishing A01K69/00 - {A01K99/00}; biocides, pest repellants or attractants A01N); APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12)

## Abstract

A pest control device comprises a power supply configured to produce 250 to 1500 W, a microwave generator, a microwave emitter probe having a substantially cylindrical shape with a microwave emitter probe length of 5 to 50 cm and a microwave emitter probe diameter of 0.25 to 5 cm, a temperature monitor probe having a substantially cylindrical shape with a temperature monitor probe length of 1 to 25 cm and a temperature monitor probe diameter of 0.5 to 5 cm, and a controller configured to control a power of microwaves emitted by the microwave emitter probe. The pest control device operates at frequencies of 2.0 to 4.0 GHz and provides targeted pest elimination in woody plants through insertable probes that deliver controlled microwave energy directly to infestation sites while maintaining tree health through real-time temperature monitoring and automatic safety controls.

## Claims

### Claim 1

A method of treating a red palm weevil infestation of a palm tree, comprising:
drilling a first hole and a second hole into the palm tree;
inserting a microwave emitter probe of a pest control device into the first hole;
placing a temperature monitor probe of the pest control device into the second hole; and
emitting microwave radiation from the microwave emitter probe to increase the temperature in the palm tree,
wherein the pest control device comprises:
an electronic controller, wherein the electronic controller is cuboidal, has a top side, a bottom side, a front side, a back side, a left side, and a right side;
a microwave generator disposed in the electronic controller, wherein the microwave generator is connected to the microwave emitter probe via a coaxial cable,
wherein the microwave emitter probe is connected at the top side of the electronic controller,
wherein the microwave emitter probe is cylindrical with a microwave emitter probe length of 5 to 50 cm and a microwave emitter probe diameter of 0.25 to 5 cm;
the temperature monitor probe, wherein the temperature monitor probe is connected to the left side of the electronic controller via a flexible cable,
wherein the temperature monitor probe is cylindrical with a temperature monitor probe length of 1 to 25 cm and a temperature monitor probe diameter of 0.5 to 5 cm,
wherein the temperature monitor probe comprises an infrared sensor to detect the temperature inside the palm tree;
a temperature monitoring system disposed at the front side of the electronic controller,
wherein the temperature monitoring system comprises a feedback circuit to display a thermogram and to adjust a microwave frequency, an alert system with a temperature threshold limit, and an user interface panel,
wherein the user interface panel displays the temperature, the microwave frequency, and a microwave operation time;
at least one or more cooling fans disposed at an apex of the left and right sides of the electronic controller;
a control unit positioned below the user interface panel at the front of the electronic controller, and
wherein the control unit comprises a microwave intensity button, a power supply button, and a microwave operation time button.

### Claim 2 (depends on 1)

The method of claim 1, further comprising
ceasing an emission of the microwave radiation when the temperature threshold limit is reached and activating the alert system.

### Claim 3 (depends on 1)

The method of claim 1, wherein the microwave radiation from the microwave emitter probe creates a heating zone having a diameter of 5 to 15 cm centered on the microwave emitter probe.