# US 11,992,819 B2 · Photochemistry device with a plurality of UV and visible light sources that carry out photocatalytic reactions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,819 B2 - Document ID: US11992819B2 - Status: Granted - Kind: B2 - Application number: 17/096,282 - Filed: 2020-11-12 - Published: 2021-05-13 - Granted: 2024-05-28 - Earliest claimed: 2019-11-13 - Assignees: Hepatochem Inc. - Applicants: Hepatochem Inc. - Inventors: Marc J. Bazin; Ryan S. Buzdygon - Web page: https://patentgrep.com/patent/US11992819B2 ## CPC - B01J 19/08: Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor (application of shock waves B01J3/08) - B01J 19/123: {Ultraviolet light} - B01J 19/127: {Sunlight; Visible light} - B01J 19/18: Stationary reactors having moving elements inside (B01J19/08, B01J19/26 take precedence) - B01J 2219/00074: by indirect heating or cooling employing heat exchange fluids - B01J 2219/08: Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor - B01J 2219/0801: Controlling the process - G01N 21/33: using ultraviolet light (G01N21/39 takes precedence) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract A device includes an insulated reaction chamber, light sources above a stirring module, the light sources surrounding the reaction chamber, and holders containing reaction vessels, the holders configured to fit within the insulated reaction chamber in a manner that enables an even distribution of light between the reaction vessels. ## Claims ### Claim 1 A device comprising: an insulated reaction chamber; modular side light sources above a stirring module, the modular side light sources configured in a series to surround the reaction chamber, each modular side light source configurable to have one or more opaque separation walls separating its light from light from each other modular side light source, and a type and a number of reaction vessels inserted into the reaction chamber, with an optional modular bottom light source underneath said reaction vessels; wherein each modular light source is capable of having a different wavelength, enabling different wavelengths in the reaction chamber using the one or more separation walls; wherein each modular light source comprises a plurality of light sources; wherein each of the plurality of light sources is independently controllable to allow a homogeneous exposure to the light and/or to adapt to the type and the number of reaction vessels inserted into the reaction chamber; and a plurality of holders containing the reaction vessels, the plurality of holders configured to fit within the insulated reaction chamber in a manner that enables an even distribution of light between the reaction vessels. ### Claim 2 (depends on 1) The device of claim 1 wherein the insulated reaction chamber includes a thermostatic fluid. ### Claim 3 (depends on 1) The device of claim 1 wherein the stirring module is a magnetic stirring module. ### Claim 4 (depends on 1) The device of claim 1 wherein the insulated reaction chamber is transparent to ultraviolet (UV) light. ### Claim 5 (depends on 1) The device of claim 1 wherein the insulated reaction chamber is transparent to visible light. ### Claim 6 (depends on 1) The device of claim 1 wherein each of the plurality of light sources comprises a specific light spectrum centered to a main wavelength. ### Claim 7 (depends on 1) The device of claim 1 wherein each of the reaction vessels comprises a cap configured to impeach light to leak from the reaction chamber while enabling reaction sampling. ### Claim 8 (depends on 7) The device of claim 7 wherein the cap comprises: a top portion having a central circular membrane; an inner wall; and an outerwall. ### Claim 9 (depends on 8) The device of claim 8 wherein the inner wall is configured to secure directly to the reaction vessel. ### Claim 10 (depends on 9) The device of claim 9 wherein the outer wall is configured to lean on the holder and block light leakage. ### Claim 11 A system comprising: a photoreactor having an inlet and an outlet to enable introduction of a thermostatic fluid into an insulated reaction chamber; a reservoir of thermostatic fluid; a heat exchanger; a heater/chiller unit, the reservoir of liquid linked to the photoreactor and the heat exchanger, the heat exchanger linked to the heater/chiller unit; wherein the photoreactor comprises modular side light sources above a stirring module, the modular side light sources configured in a series to surround the reaction chamber, each modular side light source configurable to have one or more opaque separation walls separating its light from light from each other modular side light source, and a type and a number of reaction vessels inserted into the reaction chamber, with an optional modular bottom light source underneath said reaction vessels; wherein each modular light source is capable of having a different wavelength, enabling different wavelengths in the reaction chamber using the one or more separation walls; wherein each modular light source comprises a plurality of light sources; and wherein each of the plurality of light sources is independently controllable to allow a homogeneous exposure to the light and/or to adapt to the type and the number of reaction vessels inserted into the reaction chamber. ### Claim 12 (depends on 11) The system of claim 11 wherein the photoreactor comprises: a plurality of holders containing reaction vessels, the plurality of holders configured to fit within the insulated reaction chamber in a manner that enables an even distribution of light between the reaction vessels. ### Claim 13 (depends on 12) The system of claim 12 wherein the outlet is linked to a first three-way valve, the first three-way valve linked to a pump and the reservoir of thermostatic fluid, the first three-way valve configured to empty the reservoir of thermostatic fluid or the insulated reaction chamber. ### Claim 14 (depends on 13) The system of claim 13 wherein the pump is linked to a second three-way valve, the second three-way valve linked to the reservoir of thermostatic fluid and the heat exchanger, the second three-way valve configured to fill the reservoir of thermostatic fluid or the insulated reaction chamber. ### Claim 15 (depends on 14) The system of claim 14 wherein the inlet is linked to the heat exchanger through a flow control.