Patents by Inventor Philip Cizdziel

Philip Cizdziel 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: 20200235158
    Abstract: A sensor includes a photodiode disposed in a semiconductor material to receive light and convert the light into charge, and a first floating diffusion coupled to the photodiode to receive the charge. A second floating diffusion is coupled to the photodiode to receive the charge, and a first transfer transistor is coupled to transfer the charge from the photodiode into the first floating diffusion. A second transfer transistor is coupled to transfer the charge from the photodiode into the second floating diffusion, and an inductor is coupled between a first gate terminal of the first transfer transistor and a second gate terminal of the second transfer transistor. The inductor, the first gate terminal, and the second gate terminal form a resonant circuit.
    Type: Application
    Filed: January 23, 2019
    Publication date: July 23, 2020
    Inventors: Xianmin Yi, Jingming Yao, Philip Cizdziel, Eric Webster, Duli Mao, Zhiqiang Lin, Jens Landgraf, Keiji Mabuchi, Kevin Johnson, Sohei Manabe, Dyson H. Tai, Lindsay Grant, Boyd Fowler
  • Patent number: 7022286
    Abstract: A fluidic medical diagnostic device permits measurement of analyte concentration or a property of a biological fluid, particularly the coagulation time of blood. The device has at one end a sample port for introducing a sample and at the other end a bladder for drawing the sample to a measurement area. A channel carries the sample from the sample port to the measurement area, and a stop junction, between the measurement area and bladder, halts the sample flow. The desired measurement can be made by placing the device into a meter which measures a physical property of the sample—typically, optical transmittance—after it has interacted with a reagent in the measurement area.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: April 4, 2006
    Assignee: Lifescan, Inc.
    Inventors: John Lemke, Robert Justice Shartle, Victor Pan, Philip Cizdziel
  • Publication number: 20030156984
    Abstract: A fluidic medical diagnostic device permits measurement of analyte concentration or a property of a biological fluid, particularly the coagulation time of blood. The device has at one end a sample port for introducing a sample and at the other end a bladder for drawing the sample to a measurement area. A channel carries the sample from the sample port to the measurement area, and a stop junction, between the measurement area and bladder, halts the sample flow. The desired measurement can be made by placing the device into a meter which measures a physical property of the sample—typically, optical transmittance—after it has interacted with a reagent in the measurement area.
    Type: Application
    Filed: December 26, 2002
    Publication date: August 21, 2003
    Inventors: John Lemke, Robert Justice Shartle, Victor Pan, Philip Cizdziel
  • Publication number: 20030156983
    Abstract: A fluidic medical diagnostic device permits measurement of analyte concentration or a property of a biological fluid, particularly the coagulation time of blood. The device has at one end a sample port for introducing a sample and at the other end a bladder for drawing the sample to a measurement area. A channel carries the sample from the sample port to the measurement area, and a stop junction, between the measurement area and bladder, halts the sample flow. The desired measurement can be made by placing the device into a meter which measures a physical property of the sample—typically, optical transmittance—after it has interacted with a reagent in the measurement area.
    Type: Application
    Filed: December 26, 2002
    Publication date: August 21, 2003
    Inventors: Robert Justice Shartle, Victor Pan, John Lemke, Philip Cizdziel
  • Publication number: 20020192833
    Abstract: Methods and devices are provided for detecting the application of a fluid sample onto a test strip surface when the test strip is inserted into an optical meter. In the subject methods, reflectance data is obtained from a portion of the optical meter in which the sample application region of the test strip is located, where the reflectance data covers a period of time ranging from a point at least prior to application of the sample to the strip to a point following application of the sample to the strip. The presence of the fluid sample on the test strip is then determined from the reflectance data. Also provided are optical meters that include optical means for obtaining reflectance data, where these optical means include at least an irradiation source and a light detector. The subject methods and devices find use with a variety of test strips, and are particularly suited for use with test strips that include a fluid movement means, such as a compressible bladder.
    Type: Application
    Filed: August 26, 2002
    Publication date: December 19, 2002
    Inventors: Victor Pan, John Lemke, Harshad I. Patel, Philip Cizdziel
  • Publication number: 20020168776
    Abstract: Reflectance based methods and devices are provided for determining the concentration of an analyte in a fluid sample. In practicing the subject methods, a fluid sample is applied to a matrix impregnated with a signal producing system. The signal producing system produces a detectable product in an amount proportional to the amount of analyte in the sample. A surface of the matrix is then illuminated and a reflectance measurement is obtained therefrom, generally following a predetermined incubation period. An optical component, preferably the illumination or light detection means, is also employed to obtain a temperature value corresponding to the ambient temperature of the matrix. The analyte concentration of the sample is then obtained from the reflectance measurement using an algorithm that employs the optical component derived temperature value.
    Type: Application
    Filed: May 9, 2001
    Publication date: November 14, 2002
    Inventors: Philip Cizdziel, Borzu Sohrab, Anthony Yung