Patents by Inventor Tak Wong
Tak 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).
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Patent number: 12258313Abstract: A method for purifying cumene may include splitting an alkylation reaction product into a first portion and a second portion; feeding the first portion as mostly a liquid into a benzene column; at least partially vaporizing the second portion in a heater; feeding the at least partially vaporized second portion into the benzene column. A method for purifying cumene may also include the steps of providing a benzene column and a cumene column; directing a liquid side draw from the benzene column to the cumene column, the liquid side draw being a liquid substantially free of DIPB; returning a benzene enriched vapor from the cumene column to the benzene column using an overhead line, the benzene enriched vapor having a higher concentration of benzene than the liquid side draw; and drawing purified cumene from the cumene column.Type: GrantFiled: December 8, 2022Date of Patent: March 25, 2025Assignee: KELLOGG BROWN & ROOT LLCInventors: Rian Reyneke, Eric Wing-Tak Wong
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Publication number: 20240264524Abstract: An apparatus for applying an adhesive fluid onto a bonding surface during a bonding process includes a positioning table, a dispensing device, a stamping device and a switching member which are mounted on the positioning table. The dispensing device is configured to be positionable by the positioning table to dispense the adhesive fluid onto the bonding surface. The stamping device is configured to be positionable by the positioning table to stamp the adhesive fluid onto the bonding surface. The dispensing device and stamping device are operative to apply the adhesive fluid onto different bonding positions on the bonding surface. The switching member coupled to the stamping device is configured to move the stamping device to a first standby position when the dispensing device is dispensing the adhesive fluid and to a second standby position when the stamping device is stamping the adhesive fluid.Type: ApplicationFiled: February 8, 2023Publication date: August 8, 2024Inventors: Kai Siu LAM, Nim Tak WONG, Xiaodong CHEN, Kui Kam LAM
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Patent number: 11707509Abstract: A pharmaceutically acceptable insulin premix formulation contains about 0.1-10.0 Unit/mL of insulin for intravenous administration and preferably further contains a tonicity adjuster. The methods for making and using such formulation are also provided. The pharmaceutically acceptable insulin premix formulation may be aseptically filled into a flexible container assembly to form a pharmaceutical insulin premix product. The insulin premix product can be a sterile and ready-to-use aqueous solution for glycemic control in an individual with metabolic disorders through intravenous infusion. The insulin premix product is unexpectedly stable when freshly prepared and also during its shelf-life of storage at refrigeration temperatures of 2° C. to 5° C. for 24 months followed by additional 30 days at room temperatures of 23° C. to 27° C., even without any added preservative, any added zinc, any added surfactant or any other added stabilizing excipient.Type: GrantFiled: April 16, 2021Date of Patent: July 25, 2023Assignees: Baxter International, Inc., Baxter Healthcare SAInventors: Joseph Chung Tak Wong, Sarah Elizabeth Lee
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Publication number: 20230183153Abstract: A method for purifying cumene may include splitting an alkylation reaction product into a first portion and a second portion; feeding the first portion as mostly a liquid into a benzene column; at least partially vaporizing the second portion in a heater; feeding the at least partially vaporized second portion into the benzene column. A method for purifying cumene may also include the steps of providing a benzene column and a cumene column; directing a liquid side draw from the benzene column to the cumene column, the liquid side draw being a liquid substantially free of DIPB; returning a benzene enriched vapor from the cumene column to the benzene column using an overhead line, the benzene enriched vapor having a higher concentration of benzene than the liquid side draw; and drawing purified cumene from the cumene column.Type: ApplicationFiled: December 8, 2022Publication date: June 15, 2023Applicant: KELLOGG BROWN & ROOT LLCInventors: Rian Reyneke, Eric Wing-Tak Wong
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Patent number: 11339108Abstract: Methods and systems for preparing acetone from cumene hydroperoxide (CHP) are disclosed. The disclosed methods involve cleaving CHP to form a cleavage product stream. In some embodiments, the cleavage product stream is separated into an overhead stream and a bottoms stream. The bottoms stream is neutralized, washed and then treated in a crude acetone column to provide a crude acetone stream. The overhead stream of the cleavage product is flashed forward in the process, bypassing the neutralization, washing, and crude acetone column and is then combined with the crude acetone stream. The combined acetone streams are provided to an acetone product column. According to some embodiments, the acetone product column comprises a side draw for obtaining a recycle acetone stream, which is recycled to the cleavage reactor(s). The recycle acetone side draw may be located lower on the acetone product column than the point from which product acetone is obtained.Type: GrantFiled: June 18, 2021Date of Patent: May 24, 2022Assignee: KELLOG BROWN & ROOT LLCInventors: Truc Van Vu, Eric Wing-Tak Wong, Paul Isaac Damin, Ravi Shanker Sahu
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Publication number: 20210395180Abstract: Methods and systems for preparing acetone from cumene hydroperoxide (CHP) are disclosed. The disclosed methods involve cleaving CHP to form a cleavage product stream. In some embodiments, the cleavage product stream is separated into an overhead stream and a bottoms stream. The bottoms stream is neutralized, washed and then treated in a crude acetone column to provide a crude acetone stream. The overhead stream of the cleavage product is flashed forward in the process, bypassing the neutralization, washing, and crude acetone column and is then combined with the crude acetone stream. The combined acetone streams are provided to an acetone product column. According to some embodiments, the acetone product column comprises a side draw for obtaining a recycle acetone stream, which is recycled to the cleavage reactor(s). The recycle acetone side draw may be located lower on the acetone product column than the point from which product acetone is obtained.Type: ApplicationFiled: June 18, 2021Publication date: December 23, 2021Applicant: KELLOGG BROWN & ROOT LLCInventors: Truc Van Vu, Eric Wing-Tak Wong, Paul Isaac Damin, Ravi Shanker Sahu
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Publication number: 20210315976Abstract: A pharmaceutically acceptable insulin premix formulation contains about 0.1-10.0 Unit/mL of insulin for intravenous administration and preferably further contains a tonicity adjuster. The methods for making and using such formulation are also provided. The pharmaceutically acceptable insulin premix formulation may be aseptically filled into a flexible container assembly to form a pharmaceutical insulin premix product. The insulin premix product can be a sterile and ready-to-use aqueous solution for glycemic control in an individual with metabolic disorders through intravenous infusion. The insulin premix product is unexpectedly stable when freshly prepared and also during its shelf-life of storage at refrigeration temperatures of 2° C. to 5° C. for 24 months followed by additional 30 days at room temperatures of 23° C. to 27° C., even without any added preservative, any added zinc, any added surfactant or any other added stabilizing excipient.Type: ApplicationFiled: April 16, 2021Publication date: October 14, 2021Inventors: Joseph Chung Tak Wong, Sarah Elizabeth Lee
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Patent number: 11056377Abstract: A semiconductor pick and place apparatus comprises: a pick arm having a main body, and a conduit incorporated in the main body for permitting fluid flow through the main body via the conduit, the conduit further defining a holding orifice which is operative in use to secure a semiconductor die, the conduit being configured to convey light received from one side of the pick arm through the holding orifice and an alignment window located on the main body to an opposite side of the pick arm.Type: GrantFiled: July 2, 2019Date of Patent: July 6, 2021Assignee: ASM TECHNOLOGY SINGAPORE PTE LTDInventors: Kui Kam Lam, Kai Siu Lam, Cheuk Ki Tam, Nim Tak Wong, Ka Yee Mak
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Patent number: 11033608Abstract: A pharmaceutically acceptable insulin premix formulation contains about 0.1-10.0 Unit/mL of insulin for intravenous administration and preferably further contains a tonicity adjuster. The methods for making and using such formulation are also provided. The pharmaceutically acceptable insulin premix formulation may be aseptically filled into a flexible container assembly to form a pharmaceutical insulin premix product. The insulin premix product can be a sterile and ready-to-use aqueous solution for glycemic control in an individual with metabolic disorders through intravenous infusion. The insulin premix product is unexpectedly stable when freshly prepared and also during its shelf-life of storage at refrigeration temperatures of 2° C. to 5° C. for 24 months followed by additional 30 days at room temperatures of 23° C. to 27° C., even without any added preservative, any added zinc, any added surfactant or any other added stabilizing excipient.Type: GrantFiled: October 8, 2020Date of Patent: June 15, 2021Assignees: Baxter International, Inc., Baxter Healthcare SAInventors: Joseph Chung Tak Wong, Sarah Elizabeth Lee
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Patent number: 11001548Abstract: Methods and systems for preparing acetone from cumene hydroperoxide (CHP) are disclosed. The methods and systems involve an acetone purification column configured to separate acetone from other components of the product/reactant stream. The acetone purification column is equipped with a side draw configured to route a portion of the column contents to a caustic treating vessel where the contents are reacted with a dilute aqueous alkaline solution to remove aldehydes from the acetone product. The contents of the caustic treating vessel are then routed back to the acetone purification column. Using a separate caustic treating vessel for the aldehydes removal provides increased contact time between the acetone product and the alkaline solution, thereby affording greater aldehydes removal.Type: GrantFiled: July 17, 2020Date of Patent: May 11, 2021Assignee: Kellogg Brown & Root LLCInventors: Truc Van Vu, Eric Wing-Tak Wong
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Publication number: 20210052704Abstract: A pharmaceutically acceptable insulin premix formulation contains about 0.1-10.0 Unit/mL of insulin for intravenous administration and preferably further contains a tonicity adjuster. The methods for making and using such formulation are also provided. The pharmaceutically acceptable insulin premix formulation may be aseptically filled into a flexible container assembly to form a pharmaceutical insulin premix product. The insulin premix product can be a sterile and ready-to-use aqueous solution for glycemic control in an individual with metabolic disorders through intravenous infusion. The insulin premix product is unexpectedly stable when freshly prepared and also during its shelf-life of storage at refrigeration temperatures of 2° C. to 5° C. for 24 months followed by additional 30 days at room temperatures of 23° C. to 27° C., even without any added preservative, any added zinc, any added surfactant or any other added stabilizing excipient.Type: ApplicationFiled: October 8, 2020Publication date: February 25, 2021Inventors: Joseph Chung Tak Wong, Sarah Elizabeth Lee
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Publication number: 20210005498Abstract: A semiconductor pick and place apparatus comprises: a pick arm having a main body, and a conduit incorporated in the main body for permitting fluid flow through the main body via the conduit, the conduit further defining a holding orifice which is operative in use to secure a semiconductor die, the conduit being configured to convey light received from one side of the pick arm through the holding orifice and an alignment window located on the main body to an opposite side of the pick arm.Type: ApplicationFiled: July 2, 2019Publication date: January 7, 2021Inventors: Kui Kam LAM, Kai Siu LAM, Cheuk Ki TAM, Nim Tak WONG, Ka Yee MAK
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Patent number: 10799564Abstract: A pharmaceutically acceptable insulin premix formulation contains about 0.1-10.0 Unit/mL of insulin for intravenous administration and preferably further contains a tonicity adjuster. The methods for making and using such formulation are also provided. The pharmaceutically acceptable insulin premix formulation may be aseptically filled into a flexible container assembly to form a pharmaceutical insulin premix product. The insulin premix product can be a sterile and ready-to-use aqueous solution for glycemic control in an individual with metabolic disorders through intravenous infusion. The insulin premix product is unexpectedly stable when freshly prepared and also during its shelf-life of storage at refrigeration temperatures of 2° C. to 5° C. for 24 months followed by additional 30 days at room temperatures of 23° C. to 27° C., even without any added preservative, any added zinc, any added surfactant or any other added stabilizing excipient.Type: GrantFiled: November 12, 2019Date of Patent: October 13, 2020Assignees: Baxter International Inc., Baxter Healthcare SAInventors: Joseph Chung Tak Wong, Sarah Elizabeth Lee
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Patent number: 10684118Abstract: An apparatus for determining an orientation of a die mounted on a tape includes an imaging device, a light source and a conveying mechanism. The die is at least partially translucent and includes at least one orientation feature indicative of the orientation of the die. In use, the conveying mechanism conveys the tape to position the die at an inspection position between the imaging device and the light source. The light source projects light to the imaging device and the imaging device captures an image. The projected light from the light source passing through the die is obstructed by the at least one orientation feature of the die to cause the captured image to include an image of the at least one orientation feature, whereby the orientation of the die may be determined.Type: GrantFiled: April 9, 2019Date of Patent: June 16, 2020Assignee: ASM TECHNOLOGY SINGAPORE PTE LTDInventors: Kai Siu Lam, Chi Leung Mok, Nim Tak Wong, Ka Yee Mak
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Catalyst and method for biodiesel production from unrefined low-grade oil and crude aqueous alcohols
Patent number: 10654789Abstract: A catalyst for catalyzing transesterification of esters or esterification of fatty acids, the catalyst is selected from the group consisting of manganese (II) glycerolate, cobalt (II) glycerolate, iron (II) glycerolate, and any combination thereof. A method for transesterification reaction, includes: a) providing a catalyst, wherein the catalyst is selected from the group consisting of manganese (II) glycerolate, cobalt (II) glycerolate, iron (II) glycerolate, and any combination thereof; b) adding the catalyst, one or more alcohols, and a composition comprising one or more esters to a reactor to form a reaction mixture; and c) stirring while heating the reaction mixture for reaction to form transesterification products.Type: GrantFiled: March 14, 2018Date of Patent: May 19, 2020Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY SHENZHEN RESEARCH INSTITUTEInventors: Ka-fu Yung, Wing-tak Wong, Tsz-lung Kwong, Pak-chung Lau -
CATALYST AND METHOD FOR BIODIESEL PRODUCTION FROM UNREFINED LOW-GRADE OIL AND CRUDE AQUEOUS ALCOHOLS
Publication number: 20180265446Abstract: A catalyst for catalyzing transesterification of esters or esterification of fatty acids, the catalyst is selected from the group consisting of manganese (II) glycerolate, cobalt (II) glycerolate, iron (II) glycerolate, and any combination thereof. A method for transesterification reaction, includes: a) providing a catalyst, wherein the catalyst is selected from the group consisting of manganese (II) glycerolate, cobalt (II) glycerolate, iron (II) glycerolate, and any combination thereof; b) adding the catalyst, one or more alcohols, and a composition comprising one or more esters to a reactor to form a reaction mixture; and c) stirring while heating the reaction mixture for reaction to form transesterification products.Type: ApplicationFiled: March 14, 2018Publication date: September 20, 2018Inventors: Ka-fu YUNG, Wing-tak WONG, Tsz-lung KWONG, Pak-chung LAU -
Patent number: 10014203Abstract: A semiconductor die pick and place device comprising a handing mechanism comprising a pick arm movable between a placement location and a pick-up location. A reference feature is located on the pick arm, and a light reflecting module is carried by the pick arm. The light reflecting module is operable to reflect an image of the reference feature to an image capturing module such that the reference feature appears to the light reflecting module to be in focus at a virtual position that is equivalent to a position at the pick-up location and/or the placement location.Type: GrantFiled: February 12, 2016Date of Patent: July 3, 2018Assignee: ASM TECHNOLOGY SINGAPORE PTE LTDInventors: Kui Kam Lam, Kai Siu Lam, Zhuanyun Zhang, Nim Tak Wong, Chung Yan Lau
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Publication number: 20170236734Abstract: A semiconductor die pick and place device comprising a handing mechanism comprising a pick arm movable between a placement location and a pick-up location. A reference feature is located on the pick arm, and a light reflecting module is carried by the pick arm. The light reflecting module is operable to reflect an image of the reference feature to an image capturing module such that the reference feature appears to the light reflecting module to be in focus at a virtual position that is equivalent to a position at the pick-up location and/or the placement location.Type: ApplicationFiled: February 12, 2016Publication date: August 17, 2017Inventors: Kui Kam LAM, Kai Siu LAM, Zhuanyun ZHANG, Nim Tak WONG, Chung Yan LAU
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Patent number: 9701602Abstract: Methods and systems for removing volatile organic compounds from spent air are provided. The method can include oxidizing cumene in the presence of an oxidant to produce an oxidized product containing methanol and a spent air, separating the spent air from the oxidized product, contacting the spent air with an absorbent, an adsorbent, or a mixture thereof to remove at least a portion of any impurities in the spent air to produce a first purified air, and contacting the first purified air with a biological material to produce a treated air.Type: GrantFiled: January 26, 2015Date of Patent: July 11, 2017Assignee: Kellogg Brown & Root LLCInventor: Eric Wing-Tak Wong
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Patent number: 9694350Abstract: This invention provides a catalyst comprising a new form of ZnFe2O4 spinel nanoparticles, and a method for preparing same. The catalyst is useful for catalyzing the esterification of fatty acids or transesterification of triglycerides, wherein the reaction rate and conversion can be enhanced by free fatty acids.Type: GrantFiled: March 23, 2016Date of Patent: July 4, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Ka Fu Yung, Wing Tak Wong, Tsz Lung Kwong