Patents by Inventor Jacob Y. Wong

Jacob Y. Wong 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: 20190219500
    Abstract: The concentration of a targeted molecule (such as glucose) in a liquid medium having at least one interfering molecule coexisting with the targeted molecule is detected by use of NDIR and a sampling technique in which an imposed location of a pulse beam from a signal source, an interference source and a reference source is varied over a plurality of sites of a sampling area.
    Type: Application
    Filed: March 20, 2019
    Publication date: July 18, 2019
    Applicant: Airware, Inc.
    Inventors: Thomas Campbell, Jacob Y. Wong
  • Patent number: 10241044
    Abstract: For determining concentration of targeted molecules MG in a liquid sample admixed with interfering molecules MJ which overlap their absorption band, a special NDIR sampling and calibration technique is employed. Besides the signal source, a reference and one or more interference sources are added. The selection of the wavelength for the interference sources enables its measured transmittance value to be used for deciding the validity of the calibration curve for molecules MG in the liquid sample. This value can further be used to adjust the calibration curve via a parameter linking the transmittances measured at the signal and interference wavelength channels in order to assure its validity.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: March 26, 2019
    Assignee: AIRWARE, INC.
    Inventors: Jacob Y Wong, Thomas Campbell
  • Publication number: 20190025207
    Abstract: For determining concentration of targeted molecules MG in a liquid sample admixed with interfering molecules MJ which overlap their absorption band, a special NDIR sampling and calibration technique is employed. Besides the signal source, a reference and one or more interference sources are added. The selection of the wavelength for the interference sources enables its measured transmittance value to be used for deciding the validity of the calibration curve for molecules MG in the liquid sample. This value can further be used to adjust the calibration curve via a parameter linking the transmittances measured at the signal and interference wavelength channels in order to assure its validity.
    Type: Application
    Filed: August 7, 2018
    Publication date: January 24, 2019
    Applicant: Airware, Inc.
    Inventors: Jacob Y. Wong, Thomas Campbell
  • Patent number: 10041881
    Abstract: A glucose sensor measures glucose molecules in vivo through use of NDIR in which scattering noise is reduced and Absorption Interference Noise (AIN) is suppressed with a reflection technique. Electronics are used to provide an output of glucose concentration glucose in a liquid sampling matrix after it has been determined that a calibration curve is valid after signal processing is used to obtain average ratio values for reflected signal/reference channels and interference/reference channel obtained after a pulsed beam from signal, interference and reference sources is directed at an inclined angle to a normal of a spot of the liquid sampling matrix. The signal, interference and reference sources are each pulsed at a preselected frequency of at least N Hz which is sufficiently fast so that a given molecule of glucose or interfering molecule will not pass in and out of the liquid sampling matrix within the preselected frequency.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: August 7, 2018
    Assignee: AIRWARE, INC.
    Inventors: Jacob Y Wong, Thomas Campbell
  • Publication number: 20180143134
    Abstract: A glucose sensor measures glucose molecules in vivo through use of NDIR in which scattering noise is reduced and Absorption Interference Noise (AIN) is suppressed with a reflection technique. Electronics are used to provide an output of glucose concentration glucose in a liquid sampling matrix after it has been determined that a calibration curve is valid after signal processing is used to obtain average ratio values for reflected signal/reference channels and interference/reference channel obtained after a pulsed beam from signal, interference and reference sources is directed at an inclined angle to a normal of a spot of the liquid sampling matrix. The signal, interference and reference sources are each pulsed at a preselected frequency of at least N Hz which is sufficiently fast so that a given molecule of glucose or interfering molecule will not pass in and out of the liquid sampling matrix within the preselected frequency.
    Type: Application
    Filed: October 17, 2017
    Publication date: May 24, 2018
    Applicant: Airware, Inc.
    Inventors: Jacob Y. Wong, Thomas Campbell
  • Patent number: 9823185
    Abstract: For determining concentration of a targeted molecule M in a liquid sample admixed with interfering molecules MJ which overlap its absorption band, a NDIR reflection sampling technique is used. Besides the signal source, a reference and an interference source are added. M is calculated by electronics which use Rave(t) from a pulsed signal and reference channel output and a calibration curve which is validated by use of RJava(t2) from a pulsed interference and reference channel output. Signal, interference and reference sources are pulsed at a frequency which is sufficiently fast so that a given molecule of M or MJ will not pass in and out of the liquid sampling matrix within the pulsing frequency.
    Type: Grant
    Filed: July 8, 2017
    Date of Patent: November 21, 2017
    Assignee: AIRWARE, INC.
    Inventors: Jacob Y Wong, Thomas Campbell
  • Publication number: 20170265787
    Abstract: Two coherent narrow bandwidth infrared beams, the Signal and the Reference, are incident at an angle and at high frequency sequentially and alternately at the same spot of a whole blood/body tissues sample. The Signal beam has a center wavelength which falls within an absorption line of glucose in whole blood (e.g. 1.409?). The Reference beam has a center wavelength which does not coincide with any known absorption lines of glucose in whole blood (e.g. 1,278?). Radiation emitted from the spot at which the beams penetrate into the sample and subsequently emanate from it after multiple scattering and spurious absorption effects is collected by a lens onto an infrared detector. The ratio of the voltage detected from the emerging Signal beam over that of the Reference beam is processed to yield the value of glucose concentration in the whole blood/body tissue sample.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 21, 2017
    Applicant: Airware, Inc.
    Inventor: Jacob Y Wong
  • Patent number: 9726601
    Abstract: NDIR is used to determine a concentration of a chosen molecule M in a liquid sample which contains one or more interfering molecules MJ which absorb radiation at the signal wavelength used in the NDIR process by addition of an interference source. M is calculated by electronics which use Rave(t) from a pulsed signal and reference channel output and a calibration curve which is validated by use of RJave(t2) from a pulsed interference and reference channel output. Signal, interference and reference sources are pulsed at a frequency which is sufficiently fast so that a given molecule of M or MJ will not pass in and out of the liquid sampling matrix within the pulsing frequency.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: August 8, 2017
    Assignee: AIRWARE, INC.
    Inventors: Jacob Y Wong, Thomas Campbell
  • Patent number: 9678000
    Abstract: A concentration of glucose in a blood sample is determined through use of a signal channel output/reference channel ratio obtained by use of an NDIR absorption technique in which scattering noise attributable to the liquid phase is reduced by alternately and successively pulsing infrared radiation from signal and reference sources which are multiplexed and collimated into a pulsed beam directed through the sample space containing the liquid phase and the pulse frequency is sufficiently fast so that a given molecule of glucose will not pass in and out of the sample space within the pulse frequency.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: June 13, 2017
    Assignee: AIRWARE, INC.
    Inventors: Jacob Y Wong, Thomas Campbell
  • Patent number: 9606053
    Abstract: A concentration of a chosen molecule in a liquid phase in a sample space is determined through use of a signal channel output/reference channel ratio obtained by use of an NDIR absorption technique in which scattering noise attributable to the liquid phase is reduced by alternately and successively pulsing infrared radiation from signal and reference sources which are multiplexed and collimated into a pulsed beam directed through the sample space containing the liquid phase and the pulse frequency is sufficiently fast so that a given molecule of the chosen molecule will not pass in and out of the sample space within the pulse frequency.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: March 28, 2017
    Assignee: AIRWARE, INC.
    Inventors: Jacob Y Wong, Thomas Campbell
  • Patent number: 9285308
    Abstract: A gas sample separated from transformer oil is circulated through an NDIR gas sensor system which obtains an acetylene concentration by calculating a detected acetylene concentration obtained by an absorption biased (“AB”) NDIR acetylene gas sensor, calculating a detected carbon dioxide concentration obtained by an AB NDIR carbon dioxide gas sensor, calculating a detected water vapor concentration obtained by an AB NDIR water vapor NDIR gas sensor and then determining the acetylene concentration from the detected acetylene concentration through use of the detected carbon dioxide and water vapor concentrations to compensate for their interference.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: March 15, 2016
    Inventors: Jacob Y Wong, Renyan Qin, Daniel Tschudi
  • Publication number: 20150053861
    Abstract: A gas sample separated from transformer oil is circulated through an NDIR gas sensor system which obtains an acetylene concentration by calculating a detected acetylene concentration obtained by an absorption biased (“AB”) NDIR acetylene gas sensor, calculating a detected carbon dioxide concentration obtained by an AB NDIR carbon dioxide gas sensor, calculating a detected water vapor concentration obtained by an AB NDIR water vapor NDIR gas sensor and then determining the acetylene concentration from the detected acetylene concentration through use of the detected carbon dioxide and water vapor concentrations to compensate for their interference.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Applicant: Wicor Holding AG
    Inventors: Jacob Y. Wong, Renyan Qin, Daniel Tschudi
  • Patent number: 8917183
    Abstract: A miner's personal gas alarm can be mounted in a helmet powered by a rechargeable battery for a light or be self-contained. A visual indicator will generate an alarm when the concentration of gas detected by the gas sensor triggers an alarm condition. An audio alarm can also be generated by the alarm condition. The gas sensor is a non-dispersive infrared (“NDIR”) gas sensor. When the gas sensor detects methane, the alarm condition is triggered by either an abnormally high rate of increase of methane concentration level or by an elevated concentration of methane that is above approximately 500 ppm and substantially below a lower explosion limit of methane (e.g., approximately 10,000 ppm), and the gas sensor is recalibrated whenever the sample concentration of methane falls below an ambient threshold level of methane.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 23, 2014
    Assignee: Airware, Inc
    Inventor: Jacob Y Wong
  • Patent number: 8866085
    Abstract: A differential temperature source methodology for the design of a single beam NDIR gas sensor is advanced. This methodology uses a low and a high amplitude voltage cycle to drive a closely approximated Blackbody source for generating at different times two distinct detector outputs obtained from the same detector equipped the same narrow band pass filter but strategically designed for the detection of only a particular portion of the absorption band for the gas of interest. The ratio of the high amplitude cycle detector output over the low amplitude cycle detector output is used to calibrate such an NDIR gas sensor after it is normalized by a similar ratio when there is no target gas present in the sample chamber.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: October 21, 2014
    Assignee: Airware, Inc
    Inventor: Jacob Y Wong
  • Patent number: 8842283
    Abstract: A system for detecting engine fluid constituents includes an engine having a sample channel having a conduit for a working engine fluid. The system includes an electromagnetic (EM) source that emits EM radiation through a first metal tube, where the EM radiation is EM energy at a wavelength of interest. The system further includes an EM detector that receives a remainder radiation through a second metal tube, the remainder radiation including the remaining EM radiation after passing through the sample channel. The system includes a controller that determines a composition indicator signal representative of an amount of a constituent in the working engine fluid in response to a strength of the remainder radiation, and determines a concentration of a component of interest according to the composition indicator signal.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: September 23, 2014
    Assignee: Cummins Inc.
    Inventors: John M. Janssen, Frederick H. Lindner, Jacob Y. Wong
  • Publication number: 20140266748
    Abstract: A miner's personal gas alarm can be mounted in a helmet powered by a rechargeable battery for a light or be self-contained. A visual indicator will generate an alarm when the concentration of gas detected by the gas sensor triggers an alarm condition. An audio alarm can also be generated by the alarm condition. The gas sensor is a non-dispersive infrared (“NDIR”) gas sensor. When the gas sensor detects methane, the alarm condition is triggered by either an abnormally high rate of increase of methane concentration level or by an elevated concentration of methane that is above approximately 500 ppm and substantially below a lower explosion limit of methane (e.g., approximately 10,000 ppm), and the gas sensor is recalibrated whenever the sample concentration of methane falls below an ambient threshold level of methane.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventor: Jacob Y. Wong
  • Publication number: 20140231527
    Abstract: An electronic card has a power source, a user selection mechanism operable to allow a user to select a customization variable for a single transaction, a processor for generating a transaction specific data packet that includes a card number and a customized number and an electronic communication device operable to cause the data packet to be read by a read head of a magnetic strip reader. The electronic communication device is operable to dynamically convey the transaction specific data packet to a read head of a magnetic card reader so that the transaction specific data packet is read by the read head. The transaction specific data packet is dynamically generated for use by the card for the single transaction of the card and the customized number is determined based upon the customization variable selected by the user selection mechanism.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 21, 2014
    Applicant: PrivaSys, Inc.
    Inventors: Roy L. Anderson, Jacob Y. Wong, Larry Routhenstein
  • Patent number: 8729475
    Abstract: An Absorption Biased (AB) methodology for NDIR gas sensors is used with a single infrared source and a detector to detect a single gas of interest by using a motion device to change the path length between that of the signal and reference channels. As in the case of the AB designed NDIR gas sensor, the ratio of the output of the Signal channel, measured during location arrangement X, over that of the Reference channel, measured during location arrangement Y, will be used to process the gas measurement. Multiple gases of interest can be detected by using one detector to detect multiple gases and/or by locating a second detector to detect multiple gases more distant from the source than the first detector, thereby creating longer path lengths for the second detector.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: May 20, 2014
    Assignee: Airware, Inc.
    Inventor: Jacob Y Wong
  • Patent number: 8690055
    Abstract: An electronic card has a power source, a user selection mechanism operable to allow a user to select a customization variable for a single transaction, a processor for generating a transaction specific data packet that includes a card number and a customized number and an electronic communication device operable to cause the data packet to be read by a read head of a magnetic strip reader. The electronic communication device is operable to dynamically convey the transaction specific data packet to a read head of a magnetic card reader so that the transaction specific data packet is read by the read head. The transaction specific data packet is dynamically generated for use by the card for the single transaction of the card and the customized number is determined based upon the customization variable selected by the user selection mechanism.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: April 8, 2014
    Assignee: PrivaSys, Inc.
    Inventors: Roy L. Anderson, Jacob Y Wong, Larry Routhenstein
  • Patent number: 8648322
    Abstract: A system capable of flowing gases including combustion byproducts past an exposed face of an optical element in an engine fluid conduit, and depositing debris on the exposed face of the optical element. The debris may be soot, unburned hydrocarbons, sulfates, and/or a reductant precipitate. The system is further capable of passing electromagnetic (EM) radiation through the optical element and the flowing gases and interrogating the EM radiation after passing through the optical element and the flowing gases to determine an amount of debris accumulated on the exposed face of the optical element. The system is further capable of heating an electric heating element thermally coupled to the optical element sufficiently to remove accumulated debris from the exposed face in response to the amount of debris exceeding a threshold.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: February 11, 2014
    Assignee: Cummins Inc.
    Inventors: Frederick H Lindner, Jacob Y. Wong