# US 12,178,933 B2 · Near-field narrow-band microwave device for inactivation of virus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,933 B2 - Document ID: US12178933B2 - Status: Granted - Kind: B2 - Application number: 17/230,930 - Filed: 2021-04-14 - Published: 2022-04-14 - Granted: 2024-12-31 - Earliest claimed: 2020-10-08 - Applicants: Farrokh Mohamadi - Inventors: Farrokh Mohamadi - Web page: https://patentgrep.com/patent/US12178933B2 ## CPC - A61L 2/28: Devices for testing the effectiveness or completeness of sterilisation or disinfection, e.g. indicators which change colour - A61L 2/12: Microwaves - A61L 2202/11: Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps - A61L 2202/122: Chambers for sterilisation - A61L 2202/14: Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) ## Abstract A microwave device for inactivation of viruses is disclosed. The microwave device comprising a housing and a field generator. The housing has a cavity configured to receive an object contaminated with viruses within the cavity and the field generator is configured to irradiate the cavity with microwave energy at a band of frequencies and a power level configured to inactivate the virus. The cavity is located within a near-field of a radiation pattern produced by the field generator at the band of frequencies and the microwave energy causes a dipole vibration on the virus that causes the virus to fracture. ## Claims ### Claim 1 A method for inactivation of viruses with a microwave device, the method comprising: placing a contaminated object with a virus within a cavity of a housing; generating a microwave signal with a microwave signal generator, wherein the microwave signal is within a band of frequencies and a power level configured to inactivate the virus, wherein generating the microwave signal includes generating a first microwave signal at a first frequency, within the band of frequencies, and at a first power level; irradiating the cavity with a microwave energy generated by a field generator in response to receiving the microwave signal, wherein the cavity is within a near-field of the field generator and the microwave energy causes a dipole vibration on the virus that causes the virus to fracture; determining if the virus has been inactivated after irradiating the cavity with the first power level; and recording the first frequency and first power level if the virus has been inactivated. ### Claim 2 (depends on 1) The method of claim 1, further including: incrementing the first frequency to a second frequency; generating a second microwave signal at the second frequency and the first power level; determining if the second frequency is above a maximum frequency within the band of frequencies; and irradiated the cavity with the second microwave signal if the second frequency is less than the maximum frequency. ### Claim 3 (depends on 2) The method of claim 2, further including: determining if the virus has been inactivated after irradiating the cavity with the second microwave signal; and recording the second frequency and first power level if the virus has been inactivated. ### Claim 4 (depends on 2) The method of claim 2, further including: incrementing the second frequency to a third frequency; generating a third microwave signal at the third frequency and the first power level; determining if the third frequency is above the maximum frequency within the band of frequencies; and irradiated the cavity with the third microwave signal if the third frequency is less than the maximum frequency. ### Claim 5 (depends on 4) The method of claim 4, further including: determining if the virus has been inactivated after irradiating the cavity with the third microwave signal; and recording the third frequency and first power level if the virus has been inactivated. ### Claim 6 (depends on 2) The method of claim 2, further including: incrementing the first power level to a second power level if the second frequency is greater than the maximum frequency; determining if the second power level is less than a maximum power level produced by the microwave signal generator; and producing a no inactivation notification if the second power level is more than the maximum power level. ### Claim 7 (depends on 6) The method of claim 6, further including: generating a third microwave signal at the second frequency and the second power level; and irradiated the cavity with the third microwave signal if the second power level is less than the maximum power level. ### Claim 8 (depends on 7) The method of claim 7, further including: determining if the virus has been inactivated after irradiating the cavity with the third microwave signal; and recording the second frequency and second power level if the virus has been inactivated. ### Claim 9 (depends on 7) The method of claim 7, further including: incrementing the second frequency to a third frequency; generating a fourth microwave signal at the third frequency and the second power level; determining if the third frequency is above the maximum frequency within the band of frequencies; and irradiated the cavity with the fourth microwave signal if the third frequency is less than the maximum frequency. ### Claim 10 (depends on 9) The method of claim 9, further including: incrementing the second power level to a third power level if the third frequency is greater than the maximum frequency; determining if the third power level is less than the maximum power level produced by the microwave signal generator; and producing a no inactivation notification if the third power level is more than the maximum power level. ### Claim 11 (depends on 10) The method of claim 10, further including: generating a fifth microwave signal at the third frequency and the third power level; and irradiated the cavity with the fifth microwave signal if the third power level is less than the maximum power level. ### Claim 12 (depends on 11) The method of claim 11, further including: determining if the virus has been inactivated after irradiating the cavity with the fifth microwave signal; and recording the third frequency and third power level if the virus has been inactivated. ### Claim 13 (depends on 1) The method of claim 1, wherein the band of frequencies includes frequencies from 6 GHz to 12 GHz. ### Claim 14 (depends on 13) The method of claim 13, wherein irradiating the cavity with a microwave energy includes irradiating the cavity with the microwave energy generated by a helical field generator.