Patents by Inventor Igor Krichtafovitch
Igor Krichtafovitch 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: 20240017272Abstract: An electrostatic air precipitator electrode system where the particle collecting electrode or the particle collecting electrode and the repelling electrode are made of a unitary conductive polymer material, preferably a conductive synthetic polymer material. Parts of the conductive synthetic polymer collecting electrode are treated to enhance the surface area. The treatment may be mechanical, chemical, or otherwise applied to enhance the surface area of the electrode. The repelling electrodes may also be made of a conductive polymer material, preferably a conductive synthetic polymer material. The advantage of having a unitary collecting electrode and a unitary repelling electrode both made of the same or similar material is that they may be recycled as a unit under recycling protocols requiring unitary materials and may be rigid enough to reduce the spacing that would have been required with foam based electrodes.Type: ApplicationFiled: June 12, 2023Publication date: January 18, 2024Applicant: AGENTIS AIR LLCInventors: Igor Krichtafovitch, Alan Viosca, Larry Rothenberg
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Publication number: 20230405603Abstract: An electrostatic precipitator particle collection unit with a particle collecting electrode and a repelling electrode fabricated with static dissipative materials. The static dissipative material may be a polymer, may be a synthetic polymer, and may be a moldable polymer. The electrode plates may be formed from thermoplastic or thermoset polymer.Type: ApplicationFiled: June 12, 2023Publication date: December 21, 2023Applicant: AGENTIS AIR LLCInventors: Igor Krichtafovitch, Alan Viosca, Larry Rothenberg
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Publication number: 20230398551Abstract: An electrostatic air precipitator electrode system having collecting electrodes made of a conductive polymer material, preferably a conductive synthetic polymer material. The repelling electrode may be integrated with ion-emitting sites to avoid the necessity of a separate corona electrode in an electrostatic precipitator. Ion emitting structures are portions of the electrode that have very small diameters. Molded ion emitting sites may be in the form of pointed cones or knife-like ridges. Features of reduced diameter to be ion emitting sites may be formed in metallic repelling electrode by mechanical disruption such as punching, cutting, or sawing the repelling electrode at or near the end of the electrode near the inlet end of the particle collecting structure. The repelling electrodes may also be made of a conductive polymer material, preferably a conductive synthetic polymer material.Type: ApplicationFiled: June 12, 2023Publication date: December 14, 2023Applicant: AGENTIS AIR LLCInventors: Igor Krichtafovitch, Alan Viosca, Larry Rothenberg
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Patent number: 11123750Abstract: An electrostatic air cleaner may include a corona charging stage, a precipitation stage, and an air mover (fan). The corona charging stage may include a first and second array placed under electrical potential difference capable of generating a corona discharge. The first array may be substantially parallel corona wires and may be located downstream of an air penetrable second array. The precipitation stage may be downstream from the corona charging stage. The spacing between the first array and the second array may be less than the distance of the precipitation stage to the second array. The air mover may be upstream of the corona charging stage or downstream of the precipitation stage or between these stages. The arrangement allows for higher ion output downstream of the first array with the same voltage and power consumption resulting in greater particle charging and better air cleaning efficiency.Type: GrantFiled: October 1, 2020Date of Patent: September 21, 2021Assignee: AGENTIS AIR LLCInventor: Igor Krichtafovitch
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Patent number: 10960407Abstract: A collecting electrode element for an electrostatic air cleaner with a reduced weight can be constructed with a lightweight conductive core sandwiched between particle collection layers which are supported and stabilized by a rigid frame. The conductive core may be conductive foil, conductive film, conductive ink, or conductive glue. The particle collecting layers may be flexible open-cell foam such as melamine which may be compressed between opposing frame elements. The frame may leave most and preferably at least 90% of the surface of the particle collecting layers exposed. The frame may have opposing frame elements secured to each other at a compressed area of the particle-collecting layers.Type: GrantFiled: June 13, 2017Date of Patent: March 30, 2021Assignee: AGENTIS AIR LLCInventor: Igor Krichtafovitch
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Publication number: 20210078015Abstract: An electrostatic air cleaner may include a corona charging stage, a precipitation stage, and an air mover (fan). The corona charging stage may include a first and second array placed under electrical potential difference capable of generating a corona discharge. The first array may be substantially parallel corona wires and may be located downstream of an air penetrable second array. The precipitation stage may be downstream from the corona charging stage. The spacing between the first array and the second array may be less than the distance of the precipitation stage to the second array. The air mover may be upstream of the corona charging stage or downstream of the precipitation stage or between these stages. The arrangement allows for higher ion output downstream of the first array with the same voltage and power consumption resulting in greater particle charging and better air cleaning efficiency.Type: ApplicationFiled: October 1, 2020Publication date: March 18, 2021Applicant: AGENTIS AIR LLCInventor: Igor Krichtafovitch
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Patent number: 10882053Abstract: An electronic air filter having a plurality of electrodes supported by rigid fixtures that are attached to a common case. The rigid fixtures that support the electrodes with different electrical potentials are attached to each other or to a common body in a way that increases or maximizes the creeping discharge path along the surface. Even conductive contaminants do not, therefore, provide an electrical shortage between the electrodes.Type: GrantFiled: June 13, 2017Date of Patent: January 5, 2021Assignee: Agentis Air LLCInventor: Igor Krichtafovitch
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Patent number: 10875034Abstract: An electrostatic air cleaner may be operated according to a manner designed to achieve acceptable air quality while balancing power usage and corona electrode degradation levels. The voltage applied to the corona electrode(s) may be controlled as well as the voltage applied to repelling electrodes and air flow velocity. The air cleaner may also be operated to achieve desired particle separation.Type: GrantFiled: December 13, 2018Date of Patent: December 29, 2020Assignee: Agentis Air LLCInventor: Igor Krichtafovitch
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Patent number: 10792673Abstract: An electrostatic air cleaner may include a corona charging stage, a precipitation stage, and an air mover (fan). The corona charging stage may include a first and second array placed under electrical potential difference capable of generating a corona discharge. The first array may be substantially parallel corona wires and may be located downstream of an air penetrable second array. The precipitation stage may be downstream from the corona charging stage. The spacing between the first array and the second array may be less than the distance of the precipitation stage to the second array. The air mover may be upstream of the corona charging stage or downstream of the precipitation stage or between these stages. The arrangement allows for higher ion output downstream of the first array with the same voltage and power consumption resulting in greater particle charging and better air cleaning efficiency.Type: GrantFiled: December 13, 2018Date of Patent: October 6, 2020Inventor: Igor Krichtafovitch
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Patent number: 10760784Abstract: A perforated flame holder and burner including a perforated flame holder provides reduced oxides of nitrogen (NOx) during operation. The perforated flame holder includes a pattern of elongated apertures extending between a proximal and a distal surface of the flame holder relative to a fuel nozzle. The perforated flame holder can provide a significantly reduced flame height while maintaining heat output from the burner.Type: GrantFiled: November 27, 2017Date of Patent: September 1, 2020Assignee: CLEARSIGN TECHNOLOGIES CORPORATIONInventors: Douglas W. Karkow, Joseph Colannino, Igor A. Krichtafovitch, Robert E. Breidenthal, Christopher A. Wiklof
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Publication number: 20200188929Abstract: An electrostatic air cleaner may include a corona charging stage, a precipitation stage, and an air mover (fan). The corona charging stage may include a first and second array placed under electrical potential difference capable of generating a corona discharge. The first array may be substantially parallel corona wires and may be located downstream of an air penetrable second array. The precipitation stage may be downstream from the corona charging stage. The spacing between the first array and the second array may be less than the distance of the precipitation stage to the second array. The air mover may be upstream of the corona charging stage or downstream of the precipitation stage or between these stages. The arrangement allows for higher ion output downstream of the first array with the same voltage and power consumption resulting in greater particle charging and better air cleaning efficiency.Type: ApplicationFiled: December 13, 2018Publication date: June 18, 2020Applicant: Pacific Air Filtration Holdings, LLCInventor: Igor Krichtafovitch
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Publication number: 20200188931Abstract: An electrostatic device, for example, an electrostatic air cleaner, may be provided with a corona discharge electrode; a collecting electrode; a power source connected to the corona discharge electrode and to the collecting electrode; an electrical parameter sensor; and a power supply system. The control system may receive a signal from the electrical sensor. The control system evaluates the electrical performance of the system and initiates appropriate or corrective action.Type: ApplicationFiled: December 13, 2018Publication date: June 18, 2020Applicant: Pacific Air Filtration Holdings, LLCInventor: Igor Krichtafovitch
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Publication number: 20200188932Abstract: An electrostatic air cleaner may be operated according to a manner designed to achieve acceptable air quality while balancing power usage and corona electrode degradation levels. The voltage applied to the corona electrode(s) may be controlled as well as the voltage applied to repelling electrodes and air flow velocity. The air cleaner may also be operated to achieve desired particle separation.Type: ApplicationFiled: December 13, 2018Publication date: June 18, 2020Applicant: Pacific Air Filtration Holdings, LLCInventor: Igor Krichtafovitch
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Patent number: 10677454Abstract: Two or more unipolar voltage generation systems may apply respective voltages to separate but complementary electrodes. The complementary electrodes may be disposed substantially congruently or analogously to one another to provide bipolar electrical effects on a combustion reaction.Type: GrantFiled: November 15, 2013Date of Patent: June 9, 2020Assignee: CLEARSIGN TECHNOLOGIES CORPORATIONInventor: Igor A. Krichtafovitch
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Patent number: 10668483Abstract: Electronic air cleaners for use in heating, air-conditioning, and ventilation (HVAC) systems and associated methods and systems are disclosed herein. In one embodiment, an electronic air cleaner includes one or more collecting electrodes having a collection material with a porous, open-cell structure and a conductive internal portion. The collection material can be configured to collect and receive charged particulate matter in an airflow path. After a period of time, used collection material can be removed from individual collecting electrodes and replaced with new collection material.Type: GrantFiled: October 6, 2016Date of Patent: June 2, 2020Assignee: University of WashingtonInventor: Igor Krichtafovitch
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Patent number: 10627106Abstract: A high voltage can be applied to a combustion reaction to enhance or otherwise control the combustion reaction. The high voltage is switched on or off by a grid electrode interposed between a high voltage electrode assembly and the combustion reaction.Type: GrantFiled: July 26, 2018Date of Patent: April 21, 2020Assignee: CLEARSIGN TECHNOLOGIES CORPORATIONInventors: Igor A. Krichtafovitch, Christopher A. Wiklof
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Patent number: 10571124Abstract: A burner supporting primary and secondary combustion reactions may include a primary combustion reaction actuator configured to select a location of the secondary combustion reaction. A burner may include a perforated flame holder structure configured to support a secondary combustion reaction above a partial premixing region. The secondary flame support location may be selected as a function of a turndown parameter. Selection logic may be of arbitrary complexity.Type: GrantFiled: September 29, 2017Date of Patent: February 25, 2020Assignee: CLEARSIGN COMBUSTION CORPORATIONInventors: Douglas W. Karkow, James K. Dansie, Jesse Dumas, Donald Kendrick, Igor A. Krichtafovitch, Joseph Colannino, Christopher A. Wiklof
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Publication number: 20190351431Abstract: An electronic air filter having a plurality of electrodes supported by rigid fixtures that are attached to a common case. The rigid fixtures that support the electrodes with different electrical potentials are attached to each other or to a common body in a way that increases or maximizes the creeping discharge path along the surface. Even conductive contaminants do not, therefore, provide an electrical shortage between the electrodes.Type: ApplicationFiled: June 13, 2017Publication date: November 21, 2019Applicant: Pacific Air Filtration Holdings, LLCInventor: Igor Krichtafovitch
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Publication number: 20190329269Abstract: A collecting electrode element for an electrostatic air cleaner with a reduced weight can be constructed with a lightweight conductive core sandwiched between particle collection layers which are supported and stabilized by a rigid frame. The conductive core may be conductive foil, conductive film, conductive ink, or conductive glue. The particle collecting layers may be flexible open-cell foam such as melamine which may be compressed between opposing frame elements. The frame may leave most and preferably at least 90% of the surface of the particle collecting layers exposed. The frame may have opposing frame elements secured to each other at a compressed area of the particle-collecting layers.Type: ApplicationFiled: June 13, 2017Publication date: October 31, 2019Applicant: Pacific Air Filtration Holdings, LLCInventor: Igor KRICHTAFOVITCH
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Patent number: 10458649Abstract: A horizontally-fired flame burner includes a flame holder positioned laterally from the burner. The flame holder includes a plurality of perforations that collectively confine a combustion reaction of the burner to the flame holder.Type: GrantFiled: April 6, 2016Date of Patent: October 29, 2019Assignee: CLEARSIGN COMBUSTION CORPORATIONInventors: Douglas W. Karkow, Joseph Colannino, Igor A. Krichtafovitch, Christopher A. Wiklof