Patents by Inventor Anurag Gupta

Anurag Gupta 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).

  • Publication number: 20170336432
    Abstract: Methods and apparatus relating to a photodiode-augmented infrared (IR) motion sensor are provided. The IR motion sensor can be used to sense mid-IR range radiation emitting from a person. Within the IR motion sensor, incident mid-IR range radiation impinges on an IR sensing element situated behind a Fresnel lens. Thus, when the person crosses a particular region in the range of the IR motion sensor, the IR sensing element detects a change in radiation signature, and can subsequently notify another system, such as a security system, of the change. The IR motion sensor also includes an ambient light-sensing element configured to provide information used to perform a quality check, such as to rule out “false positive” outputs, on information output from the IR sensing element.
    Type: Application
    Filed: May 19, 2016
    Publication date: November 23, 2017
    Inventors: Andrew Goldenson, Anurag Gupta
  • Patent number: 9822193
    Abstract: A system and method for startup of a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. In some embodiments, during startup the second reactor temperature control path is configured to allow the temperature of a second reactor to rise due to the heat of the exothermic polymerization reaction occurring within reactor until reaching a predetermined setpoint temperature. In other embodiments, during startup a first reactor temperature control path is configured to include a heat exchanger used as a cooler, and a second reactor temperature control path is configured to include a heat exchanger used as a heater, to raise the temperature of the second reactor until reaching a predetermined setpoint temperature.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: November 21, 2017
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Timothy O. Odi, Ralph Romig, Joseph Curren, Anurag Gupta
  • Publication number: 20170306059
    Abstract: A system and method for startup of a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. In some embodiments, during startup the second reactor temperature control path is configured to allow the temperature of a second reactor to rise due to the heat of the exothermic polymerization reaction occurring within reactor until reaching a predetermined setpoint temperature. In other embodiments, during startup a first reactor temperature control path is configured to include a heat exchanger used as a cooler, and a second reactor temperature control path is configured to include a heat exchanger used as a heater, to raise the temperature of the second reactor until reaching a predetermined setpoint temperature.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 26, 2017
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Timothy O. Odi, Ralph Romig, Joseph Curren, Anurag Gupta
  • Publication number: 20170304003
    Abstract: Disclosed herein are optical assemblies having thin, low profile shapes. These optical assemblies may be used with fiber coupled lasers and other light sources, including high power sources, to irradiate tissue at a wavelength suitable for inducing ablation or coagulation to a target depth, denaturation, thermal modification of a tissue, and/or preferential injury to a target tissue structure. Example optical assemblies can produce substantially uniform illumination patterns that are useful for treating superficial tissue, including the internal or luminal (e.g., esophageal) tissue. Some examples may have capability for cooling superficial tissue or skin, such as a detachable, reusable heat sink for active cooling without consumables, fluid pumps, or other cooling equipment.
    Type: Application
    Filed: December 30, 2016
    Publication date: October 26, 2017
    Inventors: Kathleen McMillan, Anurag Gupta, James Patrick McGuire, JR.
  • Publication number: 20170254703
    Abstract: Methods and apparatus relating to a pyroelectric IR (PIR) motion sensor are provided. The provided PIR motion sensor can be used to determine an angular position of a moving person relative to the PIR motion sensor. The provided PIR motion sensor can be used to determine a proximity of a moving person relative to the PIR motion sensor. The angular position and the proximity can be used to identify a false alarm, estimate occupancy of a region, enable tracking of a target, and the like. In an example, the provided PIR motion sensor includes multiple PIR sensors and a Fresnel lens including lenslets configured to direct received IR radiation to at least two of the PIR sensors.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 7, 2017
    Inventors: Aveek Ravishekhar Purohit, Anurag Gupta
  • Patent number: 9733477
    Abstract: An eyepiece includes a first end for receiving display light, an end reflector, and a viewing region including a partially reflective surface to redirect at least a portion of the display light out of an eye-ward side of the eyepiece along an emission path. The partially reflective surface is obliquely angled to cause the emission path to have a first oblique angle in a first dimension relative to a first normal vector of the eye-ward side. The end reflector is tilted to cause the emission path to have a second oblique angle in a second dimension relative to the first normal vector of the eye-ward side. The first and second dimensions are orthogonal to each other.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: August 15, 2017
    Assignee: Google Inc.
    Inventor: Anurag Gupta
  • Patent number: 9709797
    Abstract: An eyepiece for a head mounted display (“HMD”) includes a doublet lens that includes a first optical element and a second optical element. The first optical element has an entry surface to receive the display light from a micro display and a first coupling surface. The second optical element has an exit surface and a second coupling surface paired to the first coupling surface of the first optical element. The doublet lens is configured to direct the display light through the first coupling surface, the second coupling surface, and through the exit surface.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: July 18, 2017
    Assignee: Google Inc.
    Inventors: Ozan Cakmakci, Amber M. Luttmann, Anurag Gupta
  • Publication number: 20170191930
    Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventors: Daniel Adam Warren, Ian C. Smith, Morakinyo John Aina, Andrew W. Goldenson, Dietrich Ho, Anurag Gupta
  • Publication number: 20170191877
    Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventors: Daniel Adam Warren, Ian C. Smith, Morakinyo John Aina, Andrew W. Goldenson, Dietrich Ho, Anurag Gupta
  • Publication number: 20170191876
    Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventors: Daniel Adam Warren, Ian C. Smith, Morakinyo John Aina, Andrew W. Goldenson, Dietrich Ho, Anurag Gupta
  • Patent number: 9685058
    Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: June 20, 2017
    Assignee: Google Inc.
    Inventors: Mathias Schmidt, Adam Mittleman, Anurag Gupta, Mark Kraz, Nicholas Webb
  • Patent number: 9671614
    Abstract: An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location and emitting the display light at a viewing region. The light guide component includes an eye-ward facing surface having a reflection portion and a viewing portion, a folding surface oriented to reflect the display light received into the light guide component to the reflection portion of the eye-ward facing surface, and a first interface surface oriented to receive the display light reflected from the reflection portion of the eye-ward facing surface. A partially reflective layer is disposed on the first interface surface in the viewing region to reflect the display light through viewing portion of the eye-ward facing surface.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: June 6, 2017
    Assignee: Google Inc.
    Inventors: Ozan Cakmakci, Anurag Gupta, Oscar A. Martinez
  • Publication number: 20170152328
    Abstract: A system and method for startup of a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. In some embodiments, during startup the second reactor temperature control path is configured to allow the temperature of a second reactor to rise due to the heat of the exothermic polymerization reaction occurring within reactor until reaching a predetermined setpoint temperature. In other embodiments, during startup a first reactor temperature control path is configured to include a heat exchanger used as a cooler, and a second reactor temperature control path is configured to include a heat exchanger used as a heater, to raise the temperature of the second reactor until reaching a predetermined setpoint temperature.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Timothy O. Odi, Ralph Romig, Joseph Curren, Anurag Gupta
  • Publication number: 20170152327
    Abstract: A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for the first reactor temperature control path and the second reactor temperature control path.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Timothy O. Odi, Ralph Romig, Anurag Gupta
  • Patent number: 9652957
    Abstract: Various arrangements for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector are present. Multiple modes of the smoke detector may be used in which a first wavelength of electromagnetic radiation is emitted into a smoke chamber while a second electromagnetic radiation emitter is disabled, a period of time is waited, and a second wavelength of electromagnetic radiation is emitted into the smoke chamber while the first emitter is disabled. Depending on the mode of the smoke detector, the period of wait time may be varied.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: May 16, 2017
    Assignee: Google Inc.
    Inventors: Carlos Urrutia, Adam Mittleman, Andrew Goldenson, Nicholas Webb, Mathias Schmidt, Anurag Gupta
  • Patent number: 9651485
    Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: May 16, 2017
    Assignee: GOOGLE INC.
    Inventors: Daniel Adam Warren, Ian C. Smith, Morakinyo John Aina, Andrew W. Goldenson, Dietrich Ho, Anurag Gupta
  • Patent number: 9632312
    Abstract: An optical apparatus includes a first optical element having an eye-ward facing surface and an external world facing surface substantially opposite of the eye-ward facing surface. The optical apparatus also includes a diffractive optical element (“DOE”) disposed to substantially follow a curvature of the eye-ward facing surface of the first optical element. The DOE includes a partially reflective diffraction grating configured to direct a portion of image light in an eye-ward direction where the image light is incident through an eye facing side of the DOE. The curvature of the eye-ward facing surface of the first optical element has an optical power configured to collimate the image light within an eyebox sized area.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: April 25, 2017
    Assignee: Google Inc.
    Inventors: Ozan Cakmakci, Anurag Gupta, Bernard C. Kress
  • Patent number: 9624316
    Abstract: A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for the first reactor temperature control path and the second reactor temperature control path.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: April 18, 2017
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Timothy O. Odi, Anurag Gupta, Ralph W. Romig
  • Patent number: 9610558
    Abstract: A manufacturing system for producing polyolefin includes a polymerization reactor, a flash chamber, and a purge column. In certain embodiments, the purge column may receive a solids stream directly from the flash chamber. Further, the purge column may function as a feed tank for an extruder within an extrusion/loadout system. According to certain embodiments, the manufacturing system may be configured to consume less than 445 kilowatt-hours of energy per metric ton of polyolefin produced based on consumption of electricity, steam, and fuel gas.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: April 4, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers
  • Patent number: 9606552
    Abstract: A thermostat may include a proximity sensor and a temperature sensor. The thermostat may also include a sensor mount assembly containing the proximity sensor, the temperature sensor, and a first alignment feature. The thermostat may additionally include a lens assembly having a first area, a second area, and a second alignment feature, where the second area includes a Fresnel lens, and the first area is thinner than the second area. The thermostat may further include a front cover where the outward-facing surface of the lens assembly is shaped to continuously conform to a curvature of the front cover.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: March 28, 2017
    Assignee: Google Inc.
    Inventors: John Stefanski, Marcus Albonico, Orville Buenaventura, Vivek Goyal, Alexander Schoenen, Giancarlo Giustina, Anurag Gupta