Patents by Inventor Richard Yeh

Richard Yeh 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).

  • Patent number: 11399863
    Abstract: An atherectomy catheter device includes an elongate body, a drive shaft extending proximally to distally within the elongate body, and a cutter attached to the drive shaft. The cutter includes a serrated annular cutting edge formed on a distal edge of the cutter and a recessed bowl extending radially inwards from the annular cutting edge to a center of the cutter. The recessed bowl has a first curvature. The cutter further includes a plurality of grinding segments extending inwardly from the distal edge within the bowl. Each of the plurality of segments has a second curvature that is different from the first curvature.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: August 2, 2022
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, Richard R. Newhauser, Anthony J. Fernandez, Vincent Yeh
  • Patent number: 11305984
    Abstract: A waterproofed environmental sensing device with water detection provisions includes an environmental sensor to sense one or more environmental properties. The device further includes an electronic integrated circuit implemented on a substrate and coupled to the environmental sensor via a wire bonding. An air-permeable cap structure is formed over the environmental sensor, and a protective layer is formed over the wire bonding to protect the wire bonding against damage.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: April 19, 2022
    Assignee: Apple Inc.
    Inventors: Krishna Prasad Vummidi Murali, Kuolung Lei, Richard Yeh, Yun X. Ma
  • Patent number: 11280714
    Abstract: An apparatus for particulate matter (PM) measurement includes a first light source to generate a first light beam and a second light source disposed at a first distance from the first light source to generate a second light beam in parallel to the first light beam to illuminate a PM. The apparatus further includes a first light detector to measure a first timing corresponding to a first self-mixing signal resulting from a reflection and/or back-scattering of the first light beam from a PM, and a second light detector to measure a second timing corresponding to a second self-mixing signal resulting from a reflection and/or back-scattering of the second light beam from the PM. A processor can determine a first velocity of the PM based on a spatial separation between centers of the first light beam and the second light beam and a temporal separation between the first timing and the second timing.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Omid Momtahan, Mehmet Mutlu, Miaolei Yan, Richard Yeh
  • Patent number: 11280774
    Abstract: A portable communication device includes one or more miniature sensors to sense one or more environmental gases. A processor is coupled to the miniature sensors and is configured to enhance location detection by determining a sensor signal transition. The sensor signal transition is caused by subsequent exposures of at least one of the miniature sensors to environmental gases of a first air composition and a second air composition. The first air composition and the second air composition are respectively associated with a first location and a second location.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Miaolei Yan, Roberto M. Ribeiro, Richard Yeh
  • Patent number: 11141498
    Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an optical source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The optical source can illuminate the cavity of the housing to decompose unwanted organic compounds inside the port.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: October 12, 2021
    Assignee: Apple Inc.
    Inventors: Miaolei Yan, Michael K. Brown, Richard Yeh
  • Patent number: 11112233
    Abstract: Aspects of the subject technology relate to an apparatus for self-mixing particulate-matter sensing using a vertical-cavity surface-emitting laser (VCSEL) with extrinsic photodiodes. The apparatus includes a dual-emitting light source disposed on a first chip and to generate a first light beam and a second light beam. The first light beam illuminates a particulate matter (PM), and a light detector extrinsic to the first chip measures the second light beam and variations of the second light beam and generates a self-mixing signal. The variations of the second light beam are caused by a back-scattered light resulting from back-scattering of the first light beam from the PM. The light detector is coupled to the dual-emitting light source. The direction of the second light beam is opposite to the direction of the first light beam, and the second light beam is directed to a sensitive area of the light detector.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: September 7, 2021
    Assignee: Apple Inc.
    Inventors: Mehmet Mutlu, Michael K. Brown, Wesley S. Smith, Orit A. Shamir, Richard T. Chen, Mark T. Winkler, Miaolei Yan, Richard Yeh
  • Patent number: 11054329
    Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors. A pressure sensor in a portable electronic device may include an integrated heater or may be co-operated with an external heater for the pressure sensor. The heater may be operated to heat some or all of the pressure sensor for pressure sensor testing, calibration, or temperature-controlled pressure sensing operations.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: July 6, 2021
    Assignee: Apple Inc.
    Inventors: David MacNeil, Gregory B. Arndt, Roberto M. Ribeiro, William E. Mickelson, Richard Yeh
  • Publication number: 20210080245
    Abstract: Aspects of the subject technology relate to an apparatus for self-mixing particulate-matter sensing using a vertical-cavity surface-emitting laser (VCSEL) with extrinsic photodiodes. The apparatus includes a dual-emitting light source disposed on a first chip and to generate a first light beam and a second light beam. The first light beam illuminates a particulate matter (PM), and a light detector extrinsic to the first chip measures the second light beam and variations of the second light beam and generates a self-mixing signal. The variations of the second light beam are caused by a back-scattered light resulting from back-scattering of the first light beam from the PM. The light detector is coupled to the dual-emitting light source. The direction of the second light beam is opposite to the direction of the first light beam, and the second light beam is directed to a sensitive area of the light detector.
    Type: Application
    Filed: September 12, 2019
    Publication date: March 18, 2021
    Inventors: Mehmet MUTLU, Michael K. BROWN, Wesley S. SMITH, Orit A. SHAMIR, Richard T. CHEN, Mark T. WINKLER, Miaolei YAN, Richard YEH
  • Publication number: 20200319082
    Abstract: Various sensors, including particulate matter sensors, are described. One particulate matter sensor includes a self-mixing interferometry sensor and a set of one or more optical elements. The set of one or more optical elements is positioned to receive an optical emission of the self-mixing interferometry sensor, split the optical emission into multiple beams, and direct each beam of the multiple beams in a different direction. The self-mixing interferometry sensor is configured to generate particle speed information for particles passing through respective measurement regions of the multiple beams.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 8, 2020
    Inventors: Mehmet Mutlu, Miaolei Yan, Michael K. Brown, Richard Yeh
  • Publication number: 20200237940
    Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an optical source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The optical source can illuminate the cavity of the housing to decompose unwanted organic compounds inside the port.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 30, 2020
    Inventors: Miaolei YAN, Michael K. BROWN, Richard YEH
  • Publication number: 20200223686
    Abstract: A waterproofed environmental sensing device with water detection provisions includes an environmental sensor to sense one or more environmental properties. The device further includes an electronic integrated circuit implemented on a substrate and coupled to the environmental sensor via a wire bonding. An air-permeable cap structure is formed over the environmental sensor, and a protective layer is formed over the wire bonding to protect the wire bonding against damage.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Krishna Prasad VUMMIDI MURALI, Kuolung LEI, Richard YEH, Yun X. MA
  • Patent number: 10640367
    Abstract: A waterproofed environmental sensing device with water detection provisions includes an environmental sensor to sense one or more environmental properties. The device further includes an electronic integrated circuit implemented on a substrate and coupled to the environmental sensor via a wire bonding. An air-permeable cap structure is formed over the environmental sensor, and a protective layer is formed over the wire bonding to protect the wire bonding against damage.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: May 5, 2020
    Assignee: Apple Inc.
    Inventors: Krishna Prasad Vummidi Murali, Kuolung Lei, Richard Yeh, Yun X. Ma
  • Publication number: 20200064249
    Abstract: An apparatus for particulate matter (PM) measurement includes a first light source to generate a first light beam and a second light source disposed at a first distance from the first light source to generate a second light beam in parallel to the first light beam to illuminate a PM. The apparatus further includes a first light detector to measure a first timing corresponding to a first self-mixing signal resulting from a reflection and/or back-scattering of the first light beam from a PM, and a second light detector to measure a second timing corresponding to a second self-mixing signal resulting from a reflection and/or back-scattering of the second light beam from the PM. A processor can determine a first velocity of the PM based on a spatial separation between centers of the first light beam and the second light beam and a temporal separation between the first timing and the second timing.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 27, 2020
    Inventors: Omid MOMTAHAN, Mehmet Mutlu, Miaolei Yan, Richard Yeh
  • Patent number: 10462544
    Abstract: A portable communication device includes a transducer enclosed in an enclosure. An opening allows flow of air between the transducer enclosed in the enclosure and a surrounding environment. The enclosure protects the transducer from misreading due to occlusion of environmental aggressors on the transducer. The enclosure is configured to repel the environmental aggressors away from a surface of the transducer and to keep a portion of the opening unclogged to maintain an air flow to the transducer.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: October 29, 2019
    Assignee: Apple Inc.
    Inventors: Miaolei Yan, David MacNeil, Michael K. Brown, Richard Yeh
  • Patent number: 10436731
    Abstract: A miniature gas sensing device includes a silicon-based substrate including an opening. A first membrane is formed over the silicon-based substrate and a first portion of the first membrane covers the opening. A gas sensing layer is formed over a number of electrodes disposed over a first surface of the first portion of the first membrane and one or more heating elements. A permeable enclosure encapsulating the gas sensing layer can maintain thermal energy density over the gas sensing layer at a level sufficient to destroy a target gas to allow measuring a zero baseline.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: October 8, 2019
    Assignee: Apple Inc.
    Inventors: Paulo S. Motta, Roberto M. Ribeiro, Richard Yeh
  • Publication number: 20190120806
    Abstract: A portable communication device includes one or more miniature sensors to sense one or more environmental gases. A processor is coupled to the miniature sensors and is configured to enhance location detection by determining a sensor signal transition. The sensor signal transition is caused by subsequent exposures of at least one of the miniature sensors to environmental gases of a first air composition and a second air composition. The first air composition and the second air composition are respectively associated with a first location and a second location.
    Type: Application
    Filed: August 28, 2018
    Publication date: April 25, 2019
    Inventors: Miaolei YAN, Roberto M. RIBEIRO, Richard YEH
  • Publication number: 20190100428
    Abstract: A waterproofed environmental sensing device with water detection provisions includes an environmental sensor to sense one or more environmental properties. The device further includes an electronic integrated circuit implemented on a substrate and coupled to the environmental sensor via a wire bonding. An air-permeable cap structure is formed over the environmental sensor, and a protective layer is formed over the wire bonding to protect the wire bonding against damage.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Inventors: Krishna Prasad VUMMIDI MURALI, Kuolung LEI, Richard YEH, Yun X. MA
  • Publication number: 20190086284
    Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors. A pressure sensor in a portable electronic device may include an integrated heater or may be co-operated with an external heater for the pressure sensor. The heater may be operated to heat some or all of the pressure sensor for pressure sensor testing, calibration, or temperature-controlled pressure sensing operations.
    Type: Application
    Filed: June 19, 2018
    Publication date: March 21, 2019
    Inventors: David MACNEIL, Gregory B. ARNDT, Roberto M. RIBEIRO, William E. MICKELSON, Richard YEH
  • Publication number: 20190058934
    Abstract: A portable communication device includes a transducer enclosed in an enclosure. An opening allows flow of air between the transducer enclosed in the enclosure and a surrounding environment. The enclosure protects the transducer from misreading due to occlusion of environmental aggressors on the transducer. The enclosure is configured to repel the environmental aggressors away from a surface of the transducer and to keep a portion of the opening unclogged to maintain an air flow to the transducer.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 21, 2019
    Inventors: Miaolei Yan, David MacNeil, Michael K. Brown, Richard Yeh
  • Publication number: 20190033243
    Abstract: A miniature gas sensing device includes a silicon-based substrate embedded with one or more heating elements. One or more electrodes are disposed on the substrate, and a semiconductor gas sensing layer is deposited over the substrate including over the one or more electrodes. The semiconductor gas sensing layer includes sensing grains forming a porous matrix, and a nanometer-scale barrier oxide layer deposited over the sensing grains. The barrier layer separates gas adsorption from surfaces of the sensing grains, and enables electron tunneling based charge transfer process from the sensing grains to the barrier oxide layer. The barrier oxide layer enhances the sensor stability and promotes signal selectivity by favoring detection of strongly oxidizing and/or reducing gas species over less reactive gas species.
    Type: Application
    Filed: July 27, 2018
    Publication date: January 31, 2019
    Inventors: Miaolei YAN, Roberto M. RIBEIRO, Richard YEH