Patents by Inventor Parastoo Yaghmaee
Parastoo Yaghmaee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220057138Abstract: Methods and systems are provided for applying RF power as part of an RF treatment. Starting the RF treatment may include treating a product positioned within an RF chamber with RF waves. The RF treatment may include estimating a log kill of the product during the RF treatment and terminating the RF treatment responsive to the estimated log kill reaching a log kill threshold.Type: ApplicationFiled: August 20, 2021Publication date: February 24, 2022Inventors: Hon Ming Chun, PhD, Parastoo Yaghmaee, PhD, Nathanial G. Smalley, Zakiul Kabir
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Publication number: 20220061134Abstract: Methods and systems are provided for, applying RF power as part of an RF treatment. The RF power may be applied until a first target temperature is reached, wherein the first target temperature is less than a final target temperature. Responsive to the reaching the first target temperature, application of the RF power may be varied via a feedback control loop until final target temperature is achieved. The application of the RF power may be paused responsive to determining that a temperature spread is greater than a threshold.Type: ApplicationFiled: August 20, 2021Publication date: February 24, 2022Inventors: Hon Ming Chun, Parastoo Yaghmaee, Nathanial G. Smalley, Zakiul Kabir
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Patent number: 10844366Abstract: An apparatus and method for dehydrating biological materials, such as vaccines and microorganism cultures, in which the materials are dehydrated in an evacuated container which is in a microwave waveguide that is open to the atmosphere. The apparatus comprises means for freezing the container of biological material, a microwave generator, a waveguide, means for introducing the container into the waveguide, means for applying a vacuum to the container and means for removing the dehydrated material from the waveguide. In the method of the invention, the container of biological material is put in a microwave waveguide open to the atmosphere, a vacuum is applied to the container, the material is frozen and is radiated to dehydrate it. The dehydrated material is then removed from the waveguide.Type: GrantFiled: July 12, 2018Date of Patent: November 24, 2020Assignee: Enwave CorporationInventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee, Robert L. Pike
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Patent number: 10178873Abstract: An apparatus and method for microwave vacuum-drying of organic materials, such as food products. The apparatus has a microwave vacuum chamber 20, a loading module 36 to load containers 38 of the organic material into the vacuum chamber, a rotatable cylindrical cage 64 in the vacuum chamber for rotating the containers, a piston 114 for moving the rotating containers through the vacuum chamber, and means for unloading the containers of dehydrated material from the vacuum chamber. The apparatus may include an equilibration chamber 150 for cooling the dehydrated material under reduced pressure, and a transfer module 42 to transfer the containers from the vacuum chamber to the equilibration chamber. The apparatus has a microwave transparent window 54 for transmission of radiation into the vacuum chamber, and a gas jet 58, 60, 62 for blowing a stream of gas, such as air or nitrogen, into the vacuum chamber adjacent to the window.Type: GrantFiled: October 15, 2008Date of Patent: January 15, 2019Assignee: EnWave CorporationInventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee
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Patent number: 10139160Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: GrantFiled: April 2, 2018Date of Patent: November 27, 2018Assignee: EnWave CorporationInventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Patent number: 10139161Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: GrantFiled: April 2, 2018Date of Patent: November 27, 2018Assignee: EnWave CorporationInventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Publication number: 20180327737Abstract: An apparatus and method for dehydrating biological materials, such as vaccines and microorganism cultures, in which the materials are dehydrated in an evacuated container which is in a microwave waveguide that is open to the atmosphere. The apparatus comprises means for freezing the container of biological material, a microwave generator, a waveguide, means for introducing the container into the waveguide, means for applying a vacuum to the container and means for removing the dehydrated material from the waveguide. In the method of the invention, the container of biological material is put in a microwave waveguide open to the atmosphere, a vacuum is applied to the container, the material is frozen and is radiated to dehydrate it. The dehydrated material is then removed from the waveguide.Type: ApplicationFiled: July 12, 2018Publication date: November 15, 2018Inventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee, Robert L. Pike
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Publication number: 20180224207Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: ApplicationFiled: April 2, 2018Publication date: August 9, 2018Inventors: JUN FU, TIMOTHY D. DURANCE, PARASTOO YAGHMAEE
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Publication number: 20180224206Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: ApplicationFiled: April 2, 2018Publication date: August 9, 2018Inventors: JUN FU, TIMOTHY D. DURANCE, PARASTOO YAGHMAEE
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Patent number: 10023857Abstract: An apparatus and method for dehydrating biological materials, such as vaccines and microorganism cultures, in which the materials are dehydrated in an evacuated container which is in a microwave waveguide that is open to the atmosphere. The apparatus comprises means for freezing the container of biological material, a microwave generator, a waveguide, means for introducing the container into the waveguide, means for applying a vacuum to the container and means for removing the dehydrated material from the waveguide. In the method of the invention, the container of biological material is put in a microwave waveguide open to the atmosphere, a vacuum is applied to the container, the material is frozen and is radiated to dehydrate it. The dehydrated material is then removed from the waveguide.Type: GrantFiled: September 11, 2009Date of Patent: July 17, 2018Assignee: EN WAVE CORPORATIONInventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee, Robert L. Pike
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Patent number: 9958203Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: GrantFiled: March 31, 2016Date of Patent: May 1, 2018Assignee: EnWave CorporationInventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Publication number: 20160209114Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: ApplicationFiled: March 31, 2016Publication date: July 21, 2016Inventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Patent number: 9316437Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: GrantFiled: October 25, 2010Date of Patent: April 19, 2016Assignee: ENWAVE CORPORATIONInventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Patent number: 9273901Abstract: An apparatus (20) for dehydrating organic material in batches has a processing unit (22) having a microwave-vacuum chamber (34), an input module (28) and an output module (30), with a conveyor (54) for moving the material through the chamber on a microwave-transparent window. A material reservoir (68) is arranged to receive the material exiting the output module. A conveyor (78) external to the vacuum chamber conveys material that exits the reservoir to the input module. The vacuum chamber (34), reservoir (68) and external conveyor (78) are in fluid communication to operate at a common, reduced pressure. The organic material passes through the vacuum chamber multiple times to equilibrate and dry to the desired degree.Type: GrantFiled: July 12, 2012Date of Patent: March 1, 2016Assignee: EnWave CorporationInventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Publication number: 20140328867Abstract: An apparatus (20) for dehydrating organic material in batches has a processing unit (22) having a microwave-vacuum chamber (34), an input module (28) and an output module (30), with a conveyor (54) for moving the material through the chamber on a microwave-transparent window. A material reservoir (68) is arranged to receive the material exiting the output module. A conveyor (78) external to the vacuum chamber conveys material that exits the reservoir to the input module. The vacuum chamber (34), reservoir (68) and external conveyor (78) are in fluid communication to operate at a common, reduced pressure. The organic material passes through the vacuum chamber multiple times to equilibrate and dry to the desired degree.Type: ApplicationFiled: July 12, 2012Publication date: November 6, 2014Inventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Patent number: 8877469Abstract: A method for producing foams containing biological materials is described. A solid or semi-solid paste is formed by combining biologically active material with a protecting agent in an aqueous solvent. The paste formed is allowed to set, and may optionally then be apportioned into the desired shape. The paste may be frozen to allow formation of ice crystals to act as porogens. Subsequently, the paste is exposed to travelling wave radiant energy under vacuum (t-REV) for drying. This causes the solvent to boil off, leaving dried material containing the biologically active material, the protecting agent, and a relatively low water content. Biologically active materials which can be used include cells, microbial cultures, live attenuated microbes, probiotics, yeasts, enzymes, vaccines, proteins, and any heat-sensitive biological material. By directing energy via a travelling wave through a sample, good control of temperature and process conditions can be achieved.Type: GrantFiled: February 1, 2007Date of Patent: November 4, 2014Assignee: Enwave CorporationInventors: Timothy D. Durance, Parastoo Yaghmaee, Shafique Ahmad, Guopeng Zhang
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Patent number: 8718113Abstract: An apparatus for dehydrating a liquid sample of biological material has a microwave waveguide that is open to the atmosphere. It has a microwave generator, means for introducing a container of the material into the waveguide, means for evacuating the container, means for rotating the container and means for removing the container from the waveguide. It can include means for moving the container through the waveguide and for sealing it. In a dehydration method, a container of the liquid sample is put into the open waveguide, evacuated, rotated at high speed and microwaved. The container of dehydrated material is then removed from the waveguide. The apparatus and method are particularly suitable for dehydrating vaccines.Type: GrantFiled: September 12, 2008Date of Patent: May 6, 2014Assignee: EnWave CorporationInventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee, Robert L. Pike, Vu Truong, Binh Pham
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Publication number: 20120291305Abstract: An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.Type: ApplicationFiled: October 25, 2010Publication date: November 22, 2012Applicant: ENWAVE CORPORATIONInventors: Jun Fu, Timothy D. Durance, Parastoo Yaghmaee
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Publication number: 20110209354Abstract: An apparatus and method for dehydrating biological materials, such as vaccines and microorganism cultures, in which the materials are dehydrated in an evacuated container which is in a microwave waveguide that is open to the atmosphere. The apparatus comprises means for freezing the container of biological material, a microwave generator, a waveguide, means for introducing the container into the waveguide, means for applying a vacuum to the container and means for removing the dehydrated material from the waveguide. In the method of the invention, the container of biological material is put in a microwave waveguide open to the atmosphere, a vacuum is applied to the container, the material is frozen and is radiated to dehydrate it. The dehydrated material is then removed from the waveguide.Type: ApplicationFiled: September 11, 2009Publication date: September 1, 2011Inventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee, Robert L. Pike
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Publication number: 20110027868Abstract: An apparatus for dehydrating a liquid sample of biological material has a microwave waveguide that is open to the atmosphere. It has a microwave generator, means for introducing a container of the material into the waveguide, means for evacuating the container, means for rotating the container and means for removing the container from the waveguide. It can include means for moving the container through the waveguide and for sealing it. In a dehydration method, a container of the liquid sample is put into the open waveguide, evacuated, rotated at high speed and microwaved. The container of dehydrated material is then removed from the waveguide. The apparatus and method are particularly suitable for dehydrating vaccines.Type: ApplicationFiled: September 12, 2008Publication date: February 3, 2011Applicant: ENWAVE CORPORATIONInventors: Timothy D. Durance, Jun Fu, Parastoo Yaghmaee, Robert L. Pike, Vu Truong, Binh Pham