Patents by Inventor Sergey Boldarev
Sergey Boldarev 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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Patent number: 8387402Abstract: Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.Type: GrantFiled: March 11, 2011Date of Patent: March 5, 2013Assignee: Cryodynamics, LLCInventors: Peter J. Littrup, Alexei V. Babkin, Robert Duncan, Sergey Boldarev
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Publication number: 20110162390Abstract: Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.Type: ApplicationFiled: March 11, 2011Publication date: July 7, 2011Inventors: PETER J. LITTRUP, Alexei V. Babkin, Robert Duncan, Sergey Boldarev
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Patent number: 7921657Abstract: Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.Type: GrantFiled: August 28, 2007Date of Patent: April 12, 2011Assignee: Endocare, Inc.Inventors: Peter J. Littrup, Alexei V. Babkin, Robert Duncan, Sergey Boldarev
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Patent number: 7507233Abstract: A cryotherapy system is provided with multiple cryoprobes, each of which has a shaft with a closed distal end adapted for insertion into a body and conduits for flowing a cryogenic fluid through the shaft to reduce a temperature of the distal end. A source is provided for the cryogenic fluid, and flow-control metering valves are provided in fluid communication with the conduits and source of the cryogenic fluid. A compressor is provided in fluid communication with the conduits of the cryoprobes to define a self-contained fluid system. The flow-control metering valves and the compressor are controlled by a computer processor to provide the desired flows of the cryogenic fluid through the conduits of the self-contained fluid system.Type: GrantFiled: June 6, 2006Date of Patent: March 24, 2009Assignee: Cryo Dynamics, LLCInventors: Peter J. Littrup, Alexei V. Babkin, Robert Duncan, Sergey Boldarev
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Publication number: 20080173028Abstract: Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.Type: ApplicationFiled: August 28, 2007Publication date: July 24, 2008Applicant: CRYODYNAMICS, LLCInventors: PETER J. LITTRUP, ALEXEI V. BABKIN, ROBERT DUNCAN, SERGEY BOLDAREV
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Publication number: 20080119836Abstract: A gas-based cryotherapy probe is provided with a shaft having a closed distal end adapted for insertion into a body. A supply conduit is disposed longitudinally within the shaft for flowing gas towards the distal end, and a return conduit is disposed longitudinally within the shaft for flowing gas from the distal end. The gas is maintained at a lower pressure within the return conduit than in the supply conduit. A heat exchanger is disposed within the shaft in thermal communication with the supply conduit and return conduit to exchange heat from gas in the supply conduit to gas in the return conduit. A vacuum jacket is adapted to provide thermal isolation of the heat exchanger from the shaft.Type: ApplicationFiled: January 23, 2008Publication date: May 22, 2008Applicant: CRYODYNAMICS, LLCInventors: PETER LITTRUP, ALEXEI BABKIN, ROBERT DUNCAN, PRAMOD KERKAR, SERGEY BOLDAREV
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Patent number: 7273479Abstract: Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.Type: GrantFiled: September 27, 2004Date of Patent: September 25, 2007Assignee: Cryodynamics, LLCInventors: Peter J. Littrup, Alexei V. Babkin, Robert Duncan, Sergey Boldarev
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Publication number: 20060235375Abstract: A cryotherapy system is provided with multiple cryoprobes, each of which has a shaft with a closed distal end adapted for insertion into a body and conduits for flowing a cryogenic fluid through the shaft to reduce a temperature of the distal end. A source is provided for the cryogenic fluid, and flow-control metering valves are provided in fluid communication with the conduits and source of the cryogenic fluid. A compressor is provided in fluid communication with the conduits of the cryoprobes to define a self-contained fluid system. The flow-control metering valves and the compressor are controlled by a computer processor to provide the desired flows of the cryogenic fluid through the conduits of the self-contained fluid system.Type: ApplicationFiled: June 6, 2006Publication date: October 19, 2006Applicant: CRYODYNAMICS, LLCInventors: Peter Littrup, Alexei Babkin, Robert Duncan, Sergey Boldarev
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Publication number: 20050261753Abstract: Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.Type: ApplicationFiled: September 27, 2004Publication date: November 24, 2005Applicant: MediPhysics LLPInventors: Peter Littrup, Alexei Babkin, Robert Duncan, Sergey Boldarev