Patents by Inventor Roy Tan
Roy Tan 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: 11215042Abstract: A shock sensor, comprising: a housing, wherein the housing is cylindrical, wherein the housing comprises: a first end; a second end; a central bore that traverses a length of the housing; and an internal cavity; a coil, wherein the coil is disposed about the central bore; at least two magnets, wherein the at least two magnets are disposed about the central bore; a spring, wherein the spring is a compression spring, wherein the spring is disposed within the housing, wherein the spring comprises a first end and a second end; and a metallic member, wherein the metallic member is disposed at the second end of the spring.Type: GrantFiled: December 28, 2018Date of Patent: January 4, 2022Assignee: Halliburton Energy Services, Inc.Inventors: Simon Whye Kwong Wai, Kuo Hwi Roy Tan, Nikhil Manmadhan Kartha
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Publication number: 20210079768Abstract: A shock sensor, comprising: a housing, wherein the housing is cylindrical, wherein the housing comprises: a first end; a second end; a central bore that traverses a length of the housing; and an internal cavity; a coil, wherein the coil is disposed about the central bore; at least two magnets, wherein the at least two magnets are disposed about the central bore; a spring, wherein the spring is a compression spring, wherein the spring is disposed within the housing, wherein the spring comprises a first end and a second end; and a metallic member, wherein the metallic member is disposed at the second end of the spring.Type: ApplicationFiled: December 28, 2018Publication date: March 18, 2021Applicant: Halliburton Energy Services, Inc.Inventors: Simon Whye Kwong Wai, Kuo Hwi Roy Tan, Nikhil Manmadhan Kartha
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Patent number: 10530496Abstract: An isolation device, a control system, and a method are disclosed. An illustrative system is disclosed to include a first power domain in which a first emitter is disposed. The system further includes a third power domain in which a second emitter is disposed. The system also includes a second power domain in which a detector is disposed, where the second power domain is electrically isolated from both the first power domain and the third power domain, where the detector is configured to receive a first control signal from the first emitter as well as a second control signal from the second emitter and produce an output in response thereto that represents a combination of the first control signal and the second control signal.Type: GrantFiled: September 26, 2017Date of Patent: January 7, 2020Assignee: Avago Technologies International Sales Pte. LimitedInventors: Choon Ngiap Ho, Roy Tan, Yuen Yin Chan
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Publication number: 20190097736Abstract: An isolation device, a control system, and a method are disclosed. An illustrative system is disclosed to include a first power domain in which a first emitter is disposed. The system further includes a third power domain in which a second emitter is disposed. The system also includes a second power domain in which a detector is disposed, where the second power domain is electrically isolated from both the first power domain and the third power domain, where the detector is configured to receive a first control signal from the first emitter as well as a second control signal from the second emitter and produce an output in response thereto that represents a combination of the first control signal and the second control signal.Type: ApplicationFiled: September 26, 2017Publication date: March 28, 2019Inventors: Choon Ngiap Ho, Roy Tan, Yuen Yin Chan
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Publication number: 20190052374Abstract: A digital telemetry system can be calibrated to improve data communication. A receiver can receive a modulated signal with a predetermined sequence of transmitted symbols. A processing device can be communicatively coupled to the receiver for jointly performing carrier phase synchronization and symbol-timing recovery on the modulated signal to determine a corrective phase offset and a corrective timing offset. The receiver can be calibrated to use the corrective phase offset and the corrective timing offset for demodulating a subsequently modulated signal. In additional or alternative aspects, a demodulator can demodulate the modulated signal and determine an amount of interference introduced to the modulated signal. A transmitter can transmit data based on the amount of interference to a modem that transmitted the modulated signal for use by the modem to dynamically adjust hit allocation of the subsequently modulated signal.Type: ApplicationFiled: October 11, 2016Publication date: February 14, 2019Inventors: Joni Polili Lie, Yifei Yang, Alberto Quintero, Roy Tan
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Publication number: 20170023695Abstract: A method and apparatus for generating a low distortion sinusoidal signal with controllable amplitude for use with downhole tools, such as an array laterolog. In preferred embodiment, a signal-generating digital-to-analog converter is provided to produce a sinusoidal or other waveform at full scale. An amplitude-controlling digital-to-analog converter provides a voltage reference for the signal-generating digital-to-analog converter. The tandem combination of two digital-to-analog converters allows the generation of low distortion signals, even at low amplitudes. The amplitude-controlling digital-to-analog converter is provided digital codes by the downhole tool system processor. A high-speed dedicated controller provides digital codes to the signal-generating digital-to-analog converter, which relieves the system processor from the intensive task of providing signal generating codes, thereby freeing processor bandwidth for other system tasks.Type: ApplicationFiled: April 14, 2014Publication date: January 26, 2017Inventors: Xiaochong Zhang, Kuo Hwi Roy Tan, Alberto Quintero
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Publication number: 20160299253Abstract: An example electronics module for a downhole tool includes a power source that provides an operating voltage and a processor communicably coupled to the power source to receive the operating voltage. A timer is communicably coupled to the power source and the processor and includes a real-time clock, a diode, and a capacitor. The real-time clock is powered by a primary power supply provided by the operating voltage and a backup power supply provided by the capacitor as charged through the diode. The real-time clock is powered by the primary power supply during normal operation and powered by the backup power supply when the primary power supply fails.Type: ApplicationFiled: July 30, 2014Publication date: October 13, 2016Applicant: Halliburton Energy Services, Inc.Inventors: Xiaohong ZHANG, Guosheng JIN, Alberto QUINTERO, Roy TAN
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Patent number: 9146194Abstract: Systems, including methods, apparatus, and algorithms, for spectrally imaging a two-dimensional array of samples.Type: GrantFiled: February 1, 2012Date of Patent: September 29, 2015Assignee: APPLIED BIOSYSTEMS LLCInventors: Dar Bahatt, Chirag Patel, Roy Tan, Derek Prothro
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Publication number: 20070144881Abstract: A circuit for actuating a switch includes a conductive liquid switch comprising a conductive liquid droplet and a control processor configured to receive a switching signal and configured to provide at least one actuation pulse to the conductive liquid droplet to initiate movement of the conductive liquid droplet based on a duration of a time period between the switching signal and a preceding switching signal.Type: ApplicationFiled: December 27, 2005Publication date: June 28, 2007Inventors: Youfa Wang, Thiam Tay, Soo Ho, Roy Tan, Patrick Lau
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Publication number: 20070035819Abstract: Systems, including methods, apparatus, and algorithms, for spectrally imaging a two-dimensional array of samples.Type: ApplicationFiled: June 30, 2006Publication date: February 15, 2007Inventors: Dar Bahatt, Chirag Patel, Roy Tan, Derek Prothro
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Publication number: 20070035818Abstract: Systems, including methods, apparatus, and algorithms, for spectrally imaging a two-dimensional array of samples.Type: ApplicationFiled: June 30, 2006Publication date: February 15, 2007Inventors: Dar Bahatt, Chirag Patel, Derek Prothro, Roy Tan
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Publication number: 20060186048Abstract: The present disclosure relates to a method for sampling a fluid, such as air. As fluid flows through a device, a scrubbing liquid is positioned in a pattern to contact the fluid and constituents in the fluid are transferred to in the liquid.Type: ApplicationFiled: February 9, 2006Publication date: August 24, 2006Applicant: Applera CorporationInventor: Roy Tan
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Publication number: 20060003339Abstract: Methods of detecting targets in a sample are provided. Methods of quantitating targets in a sample are provided. Methods of determining the specificity of a first molecule for a second molecule are provided. Methods of detecting inhibitors or enhancers of an interaction between a first molecule and a second molecule are provided. Methods of measuring the affinity of two different molecules for a different third molecule are provided.Type: ApplicationFiled: June 30, 2004Publication date: January 5, 2006Inventors: Hans Fuernkranz, Roy Tan
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Patent number: 6787016Abstract: Compositions and methods are provided for performing capillary electrophoresis using a composition comprising in combination in an aqueous buffered medium a coating polymer and a sieving polymer, where the sieving polymer is more hydrophilic than the coating polymer and is present in greater amount. Of particular interest are uncrosslinked acrylamide polymer mixtures for coating plastic channels and providing sieving for performing DNA separations in microfluidic devices. Polyacrylamide or N,N-dimethyl acrylamide is used with a N,N-dialkyl acrylamide copolymer, either separately or together for sieving and coating, serving as the medium in capillary electrophoresis DNA separations.Type: GrantFiled: May 1, 2001Date of Patent: September 7, 2004Assignee: Aclara Biosciences, Inc.Inventors: Hongdong Roy Tan, Alexander Sassi, Ingrid Cruzado
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Publication number: 20020029968Abstract: Compositions and methods are provided for performing capillary electrophoresis using a composition comprising in combination in an aqueous buffered medium a coating polymer and a sieving polymer, where the sieving polymer is more hydrophilic than the coating polymer and is present in greater amount. Of particular interest are uncrosslinked acrylamide polymer mixtures for coating plastic channels and providing sieving for performing DNA separations in microfluidic devices. Polyacrylamide or N,N-dimethyl acrylamide is used with a N,N-dialkyl acrylamide copolymer, either separately or together for sieving and coating, serving as the medium in capillary electrophoresis DNA separations.Type: ApplicationFiled: May 1, 2001Publication date: March 14, 2002Applicant: Aclara BioSciences, Inc.Inventors: Hongdong Roy Tan, Alexander Sassi, Ingrid Cruzado