Patents by Inventor Hon Chiu
Hon Chiu 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: 11839830Abstract: A foam maker has a bucket and a lid. The bucket has an outlet port provided in one of its walls, and a delivery tube connected to the outlet port. The lid includes a lid base and a lid top. The lid base has a frame and a compartment that receives a fan, a motor coupled to the fan, and a fluid inlet port through which foam solution and water can be introduced. The lid top has a water/foam inlet opening that is aligned with the fluid inlet port, and an air inlet port that is positioned adjacent the fan. An air tube is disposed inside the bucket, and has a first end connected to the lid base and communicating with the fan, and an opposite second end having an open distal end that is immersed inside foam solution. The air tube further includes an air chamber positioned adjacent the open distal end.Type: GrantFiled: January 22, 2022Date of Patent: December 12, 2023Assignee: Stallion Sport LimitedInventors: Joseph Lin, Hon Chiu Chan, Ping Wai Lee
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Publication number: 20230233956Abstract: A foam maker has a bucket and a lid. The bucket has an outlet port provided in one of its walls, and a delivery tube connected to the outlet port. The lid includes a lid base and a lid top. The lid base has a frame and a compartment that receives a fan, a motor coupled to the fan, and a fluid inlet port through which foam solution and water can be introduced. The lid top has a water/foam inlet opening that is aligned with the fluid inlet port, and an air inlet port that is positioned adjacent the fan. An air tube is disposed inside the bucket, and has a first end connected to the lid base and communicating with the fan, and an opposite second end having an open distal end that is immersed inside foam solution. The air tube further includes an air chamber positioned adjacent the open distal end.Type: ApplicationFiled: January 22, 2022Publication date: July 27, 2023Applicant: Stallion Sport LimitedInventors: Joseph Lin, Hon Chiu Chan, Ping Wai Lee
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Patent number: 8651159Abstract: A die bonder is provided comprising a bond head including a collet for picking up a die and bonding the die at a bonding site. The die bonder further comprises a first motor which is connected to the collet by a shaft for driving the collet in driving directions towards and away from the bonding site and a second motor which is connected to the bond head for driving the bond head in directions parallel to the driving directions of the first motor. A rotary motor is also operatively connected to the collet for rotating the collet about a rotational axis that is parallel to the driving directions of the first motor. The shaft is slidably connected to the rotary motor and is slidable relative to the rotary motor when it is driven by the first motor to move.Type: GrantFiled: June 12, 2009Date of Patent: February 18, 2014Assignee: ASM Assembly Automation LtdInventors: Sun Kuen Wong, Hon Chiu Hui, Yin Fun Ng
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Publication number: 20110269946Abstract: The invention provides a protein separation device comprising a chaperone protein immobilized on a substrate. In one embodiment, the chaperone protein is an Hsp60 chaperone, preferably a group one chaperone, preferably GroEL. The invention also provides a method for isolating a protein from a biological sample using a protein separation device of the invention.Type: ApplicationFiled: July 14, 2011Publication date: November 3, 2011Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHInventors: Heng Hang Tsai, Hon-Chiu Eastwood Leung
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Patent number: 8016010Abstract: A die bonder comprises a bond head having a load shaft which passes through the bond head and a collet located at one end of the load shaft for holding a die to be bonded. A bond force motor is operative to drive the load shaft along a travel axis in directions towards and away from a die bonding position. A rotary motor is operative to rotate the load shaft about a rotational axis parallel to the travel axis. A coupler which comprises a bearing couples the load shaft to the bond force motor to allow the load shaft to rotate about the rotational axis relative to the bond force motor.Type: GrantFiled: September 2, 2009Date of Patent: September 13, 2011Assignee: ASM Assembly Automation LtdInventors: Yin Fun Ng, Gary Peter Widdowson, Hon Chiu Hui
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Patent number: 8013129Abstract: The invention provides a protein separation device comprising a chaperone protein immobilized on a substrate. In one embodiment, the chaperone protein is an Hsp60 chaperone, preferably a group one chaperone, preferably GroEL. The invention also provides a method for isolating a protein from a biological sample using a protein separation device of the invention.Type: GrantFiled: December 17, 2004Date of Patent: September 6, 2011Assignee: Agency for Science, Technology and ResearchInventors: Heng Hang Tsai, Hon-Chiu Eastwood Leung
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Publication number: 20110048648Abstract: A die bonder comprises a bond head having a load shaft which passes through the bond head and a collet located at one end of the load shaft for holding a die to be bonded. A bond force motor is operative to drive the load shaft along a travel axis in directions towards and away from a die bonding position. A rotary motor is operative to rotate the load shaft about a rotational axis parallel to the travel axis. A coupler which comprises a bearing couples the load shaft to the bond force motor to allow the load shaft to rotate about the rotational axis relative to the bond force motor.Type: ApplicationFiled: September 2, 2009Publication date: March 3, 2011Inventors: Yin Fun NG, Gary Peter WIDDOWSON, Hon Chiu HUI
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Publication number: 20100314050Abstract: A die bonder is provided comprising a bond head including a collet for picking up a die and bonding the die at a bonding site. The die bonder further comprises a first motor which is connected to the collet by a shaft for driving the collet in driving directions towards and away from the bonding site and a second motor which is connected to the bond head for driving the bond head in directions parallel to the driving directions of the first motor. A rotary motor is also operatively connected to the collet for rotating the collet about a rotational axis that is parallel to the driving directions of the first motor. The shaft is slidably connected to the rotary motor and is slidable relative to the rotary motor when it is driven by the first motor to move.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Inventors: Sun Kuen WONG, Hon Chiu HUI, Yin Fun NG
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Publication number: 20090093061Abstract: The invention provides a protein separation device comprising a chaperone protein immobilised on a substrate. In one embodiment, the chaperone protein is an Hsp60 chaperone, preferably a group one chaperone, preferably GroEL. The invention also provides a method for isolating a protein from a biological sample using a protein separation device of the invention.Type: ApplicationFiled: December 17, 2004Publication date: April 9, 2009Applicant: Agency for Science, Technology and ResearchInventors: Heng Hang Tsai, Hon-Chiu Eastwood Leung
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Publication number: 20070227891Abstract: Notable techniques for protein separation prior to any further downstream analysis include the Sodium Doecyl Sulphate-PolyAcrylamide Gel Electrophoresis (SDS-PAGE). However, SDS-PAGE suffers from limitations such as band broadening and the ineffective separation of proteins or proteins isoforms with very similar migration mobilities under the influence of an electric field. Currently, the best method for protein separation and resolution with very narrow molecular weight variation utililizing SDS-PAGE is by pulse electrophoresis. However, pulse electrophoresis introduces new limitations such as the long run period required, band broadening contributed by diffusion when the electrical field is switched off, and the need for casting of inconvenient and unconventional long separating gel arise. An embodiment of the invention describes use of a differential alternating field electrophoresis (DAFE) method where electrical fields in substantially opposing directions are applied to proteins for separation thereof.Type: ApplicationFiled: October 6, 2004Publication date: October 4, 2007Applicant: Agency for Science, Technology and ResearchInventors: Heng Tsai, Hon Chiu Leung
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Patent number: 7204960Abstract: The invention provides an apparatus and method for calibrating a dispensing system. A dispenser dispenses a controlled quantity of material into a container for receiving material. A system, preferably a vision system comprising an image capturing device and an imaging system, is adapted to capture an image of a physical dimension of a quantity of dispensed material in a given time. The physical dimension may be a width of a top surface area, a height or a cross-sectional area of the dispensed material. A calibrating system is adapted to calculate a volume of the quantity of material based upon said physical dimension.Type: GrantFiled: March 3, 2003Date of Patent: April 17, 2007Assignee: ASM Assembly Automation Ltd.Inventors: Hon Chiu Hui, Wing Fai Lam, Lim Pun Kong, Ka Yee Mak, Ka Yin Lee
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Patent number: 6991825Abstract: The invention provides an apparatus and method for dispensing material onto a substrate. The apparatus comprises a dispensing system having a dipenser and a control system adapted to adjust a quantity of material to be dispensed onto the substrate. It also includes an image capturing system adapted to acquire an image of the material that is dispensed onto the substrate, a measuring system to analyze the image and measure the quantity of material dispensed, and a compensation system adapted to provide a correction signal to the control system to vary the quantity of material dispensed.Type: GrantFiled: May 10, 2002Date of Patent: January 31, 2006Assignee: ASM Assembly Automation Ltd.Inventors: Hon Chiu Hui, Wing Fai Lam, Ka Yee Mak, Man Lai Manly Chau
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Publication number: 20050156684Abstract: A charge pump-based PLL dynamically controls loop gain in response to the frequency of an input signal. The loop gain is dynamically adjusted by varying the bias current of the charge pump circuit of the PLL. The bias current is varied in response to the voltage of a loop filter that is coupled to the output of the charge pump circuit. A voltage-to-current converter (“V/I converter”) converts the voltage of the loop filter to a current. The current is mirrored to a dynamic bias generator. The dynamic bias generator comprises a sample-and-hold circuit that is used to sample the mirrored current when the charge pump circuit is temporarily switched off. The sampled current level is used to adjust the level of the bias current of the charge pump circuit. The switching the charge pump off minimizes the disturbance of the loop filter voltage by the charge pump.Type: ApplicationFiled: February 18, 2005Publication date: July 21, 2005Applicant: National Semiconductor CorporationInventor: Hon Chiu
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Publication number: 20040175832Abstract: The invention provides an apparatus and method for calibrating a dispensing system. A dispenser dispenses a controlled quantity of material into a container for receiving material. A system, preferably a vision system comprising an image capturing device and an imaging system, is adapted to capture an image of a physical dimension of a quantity of dispensed material in a given time. The physical dimension may be a width of a top surface area, a height or a cross-sectional area of the dispensed material. A calibrating system is adapted to calculate a volume of the quantity of material based upon said physical dimension.Type: ApplicationFiled: March 3, 2003Publication date: September 9, 2004Applicant: ASM Assembly Automation LtdInventors: Hon Chiu Hui, Wing Fai Lam, Lim Pun Kong, Ka Yee Mak, Ka Yin Lee
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Publication number: 20030209560Abstract: The invention provides an apparatus and method for dispensing material onto a substrate. The apparatus comprises a dispensing system having a dipenser and a control system adapted to adjust a quantity of material to be dispensed onto the substrate. It also includes an image capturing system adapted to acquire an image of the material that is dispensed onto the substrate, a measuring system to analyze the image and measure the quantity of material dispensed, and a compensation system adapted to provide a correction signal to the control system to vary the quantity of material dispensed.Type: ApplicationFiled: May 10, 2002Publication date: November 13, 2003Applicant: ASM Assembly Automation LtdInventors: Hon Chiu Hui, Wing Fai Lam, Ka Yee Mak, Man Lai Manly Chau