Patents by Inventor Joseph A. Culver
Joseph A. Culver 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: 11864865Abstract: A wearable device for high-density-diffuse optical tomography includes a plurality of source modules that include source housings containing a light source. The device also includes a plurality of detector modules that include detector housings, a photodiodes, transimpedance amplifiers operatively coupled to the photodiodes, and analog to digital converters operatively coupled to the transimpedance amplifier. Each detector housing contains at least one of the photodiode, the analog to digital converter, and the transimpedance amplifier. Each source and detector housing is configurable to contact a subject's scalp and deliver or receive light from the scalp at one position. The wearable device also includes a control circuit operatively coupled to the plurality of source modules and to the plurality of detector modules to operate the source and detector modules in a coordinated manner to acquire a plurality of diffuse optical tomography measurements.Type: GrantFiled: February 26, 2019Date of Patent: January 9, 2024Assignee: Washington UniversityInventors: Joseph Culver, Edward Richter, Adam T. Eggebrecht
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Publication number: 20210015365Abstract: Optical sensors, systems, and methods are described, which may be used to provide or analyze information about a subject. The optical sensor may be placed in proximity to the subject and may include optical sources and optical detectors. The optical sources may irradiate the subject with optical signals and the optical detectors can detect signals from the subject. Analysis of the detected signals can yield information about the subject.Type: ApplicationFiled: May 5, 2020Publication date: January 21, 2021Applicant: Invisio Medical, Inc.Inventors: Thomas Muehlemann, Catherine Pace, Karim Haroud, Stefan Troller, Azadeh Khanicheh, Michel Bruehwiler, Jeffery J. Caputo, Russell L. Herrig, Omar Amirana, Joseph Culver, John Shambroom
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Publication number: 20190261860Abstract: A wearable device for high-density-diffuse optical tomography includes a plurality of source modules that include source housings containing a light source. The device also includes a plurality of detector modules that include detector housings, a photodiodes, transimpedance amplifiers operatively coupled to the photodiodes, and analog to digital converters operatively coupled to the transimpedance amplifier. Each detector housing contains at least one of the photodiode, the analog to digital converter, and the transimpedance amplifier. Each source and detector housing is configurable to contact a subject's scalp and deliver or receive light from the scalp at one position. The wearable device also includes a control circuit operatively coupled to the plurality of source modules and to the plurality of detector modules to operate the source and detector modules in a coordinated manner to acquire a plurality of diffuse optical tomography measurements.Type: ApplicationFiled: February 26, 2019Publication date: August 29, 2019Applicant: Washington UniversityInventors: Joseph Culver, Edward Richter, Adam T. Eggebrecht
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Patent number: 9538926Abstract: Speckle contrast optical tomography system provided with at least one point source and multiple detectors, means for providing different source positions, the point source having a coherence length of at least the source position-detector distance and means for arranging the source position-detector pairs over a sample to be inspected, the system being further provided with means for measuring the speckle contrast; the speckle contrast system of the invention thus capable of obtaining 3D images.Type: GrantFiled: December 26, 2013Date of Patent: January 10, 2017Assignees: FUNDACIO INSTITUT DE CIENCIES FOTONIQUES, WASHINGTON UNIVERSITYInventors: Turgut Durduran, Claudia Valdes, Anna Kristoffersen, Hari M. Varma, Joseph Culver
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Publication number: 20150182136Abstract: Speckle contrast optical tomography system provided with at least one point source and multiple detectors, means for providing different source positions, the point source having a coherence length of at least the source position-detector distance and means for arranging the source position-detector pairs over a sample to be inspected, the system being further provided with means for measuring the speckle contrast; the speckle contrast system of the invention thus capable of obtaining 3D images.Type: ApplicationFiled: December 26, 2013Publication date: July 2, 2015Inventors: Turgut Durduran, Claudia Valdes, Anna Kristoffersen, Hari M. Varma, Joseph Culver
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Publication number: 20140275891Abstract: Optical sensors, systems, and methods are described, which may be used to provide or analyze information about a subject. The optical sensor may be placed in proximity to the subject and may include optical sources and optical detectors. The optical sources may irradiate the subject with optical signals and the optical detectors can detect signals from the subject. Analysis of the detected signals can yield information about the subject.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: Cephalogics, LLCInventors: Thomas Muehlemann, Catherine Pace, Karim Haroud, Stefan Troller, Azadeh Khanicheh, Jeffery J. Caputo, Russell L. Herrig, Joseph Culver
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Publication number: 20140276013Abstract: Optical sensors, systems, and methods are described, which may be used to provide or analyze information about a subject. The optical sensor may be placed in proximity to the subject and may include optical sources and optical detectors. The optical sources may irradiate the subject with optical signals and the optical detectors can detect signals from the subject. Analysis of the detected signals can yield information about the subject.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: Cephalogics, LLCInventors: Thomas Muehlemann, Catherine Pace, Karim Haroud, Stefan Troller, Azadeh Khanicheh, Michel Bruehwiler, Jeffery J. Caputo, Russell L. Herrig, Omar Amirana, Joseph Culver
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Patent number: 7983740Abstract: A high performance imaging system for diffuse optical tomography is disclosed. A dense grid utilizing sources, e.g., light emitting diodes (“LEDs”), that achieve high performance at high speed with a high dynamic range and low inter-channel crosstalk are complemented by a system of discrete, isolated receivers, e.g., avalanche photodiodes (“APDs”). The source channels have dedicated reconfigurable encoding control signals, and the detector channels have reconfigurable decoding, allowing maximum flexibility and optimal mixtures of frequency and time encoding and decoding. Each detector channel is analyzed by dedicated, isolated, high-bandwidth receiver circuitry so that no channel gain switching is necessary. The resulting improvements to DOT system performance, e.g., increased dynamic range and decreased crosstalk, enable higher density imaging arrays and provide significantly enhanced DOT image quality.Type: GrantFiled: December 21, 2007Date of Patent: July 19, 2011Assignee: Washington UniversityInventors: Joseph Culver, Gavin Perry, Benjamin Zeff
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Publication number: 20080154126Abstract: A high performance imaging system for diffuse optical tomography is disclosed. A dense grid utilizing sources, e.g., light emitting diodes (“LEDs”), that achieve high performance at high speed with a high dynamic range and low inter-channel crosstalk are complemented by a system of discrete, isolated receivers, e.g., avalanche photodiodes (“APDs”). The source channels have dedicated reconfigurable encoding control signals, and the detector channels have reconfigurable decoding, allowing maximum flexibility and optimal mixtures of frequency and time encoding and decoding. Each detector channel is analyzed by dedicated, isolated, high-bandwidth receiver circuitry so that no channel gain switching is necessary. The resulting improvements to DOT system performance, e.g., increased dynamic range and decreased crosstalk, enable higher density imaging arrays and provide significantly enhanced DOT image quality.Type: ApplicationFiled: December 21, 2007Publication date: June 26, 2008Applicant: WASHINGTON UNIVERSITYInventors: Joseph Culver, Gavin Perry, Benjamin Zeff
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Patent number: 6887065Abstract: An apparatus for molding a polymeric multiform skin membrane is provided. The molding apparatus includes a rotatable heated mold envelope having an opening. Additionally the mold envelope has channel members which generally extend lateral of the opening. A feed-stock bucket is provided for holding polymeric work stock. The bucket is moved by a carriage in a direction generally parallel with the channel members of the mold envelope with a first lateral position for loading and a second position closing the opening of the mold envelope. Selectively actuatable clamps are provided for securing the bucket with the mold envelope.Type: GrantFiled: June 6, 2002Date of Patent: May 3, 2005Assignee: Intertec SystemsInventor: Joseph A. Culver
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Publication number: 20030227110Abstract: An apparatus for molding a polymeric multiform skin membrane is provided. The molding apparatus includes a rotatable heated mold envelope having an opening. Additionally the mold envelope has channel members which generally extend lateral of the opening. A feed-stock bucket is provided for holding polymeric work stock. The bucket is moved by a carriage in a direction generally parallel with the channel members of the mold envelope with a first lateral position for loading and a second position closing the opening of the mold envelope. Selectively actuatable clamps are provided for securing the bucket with the mold envelope.Type: ApplicationFiled: June 6, 2002Publication date: December 11, 2003Inventor: Joseph A. Culver