Patents by Inventor Chih-An Hwang
Chih-An Hwang 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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Publication number: 20230363511Abstract: A container for loose powder is disclosed therein that enables free flow of loose powder between a powder reservoir of the container and an application tray of the container while the container remains closed by a lid.Type: ApplicationFiled: May 12, 2022Publication date: November 16, 2023Inventors: Roger Ting Chih HWANG, Stephen M. FISHER, II, William Lloyd ALUSITZ
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Patent number: 10912371Abstract: A dual end container for products such as cosmetics provided. Specifically, a dual end container with a compact, integrated mechanism for selectively extending and retracting a first product or applicator without movement of a second product or applicator is disclosed. The dual end container includes a first cup, a second cup, which is at least partially housed within the first cup, and a driving member assembly, which includes a first driving member and a second driving member, between the first cup and the second cup. The first cup has a first male thread, the second cup has a second male thread, the first driving member has a first female thread, and the second driving member has a second female thread. The male threads interact with the corresponding female threads to extend and retract the corresponding cups.Type: GrantFiled: December 11, 2018Date of Patent: February 9, 2021Assignee: CRYSTAL INTERNATIONAL (GROUP)Inventors: Ting-Hin Yeung, Roger Ting Chih Hwang, Yuen Han Chow, Wen Wendy Tung
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Publication number: 20190110580Abstract: A dual end container for products such as cosmetic products or applicators is provided. More specifically, a dual end container with a compact, integrated mechanism for selectively extending and retracting a first product or applicator without movement of a second product or applicator is disclosed. The dual end container includes a first cup, a second cup, which is at least partially housed within the first cup, and a driving member assembly, which includes a first driving member and a second driving member, between the first cup and the second cup. The first cup has a first male thread, the second cup has a second male thread, the first driving member has a first female thread, and the second driving member has a second female thread. The first male thread interacts with the first female thread to extend and retract the first cup. The second male thread interacts with the second female thread to extend and retract the second cup.Type: ApplicationFiled: December 11, 2018Publication date: April 18, 2019Inventors: Ting-Hin YEUNG, Roger Ting Chih HWANG, Yuen Han CHOW, Wen Wendy TUNG
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Patent number: 10154720Abstract: A dual end container for products such as cosmetic products or applicators is provided. More specifically, a dual end container with a compact, integrated mechanism for selectively extending and retracting a first product or applicator without movement of a second product or applicator is disclosed. The dual end container includes a first cup, a second cup, which is at least partially housed within the first cup, and a driving member between the first cup and the second cup. The first cup has a first male thread, the second cup has a second male thread and the driving member has a first and second female thread. The first male thread interacts with the first female thread to extend and retract the first cup. The second male thread interacts with the second female thread to extend and retract the second cup.Type: GrantFiled: July 5, 2016Date of Patent: December 18, 2018Assignee: CRYSTAL INTERNATIONAL (GROUP), INC.Inventors: Ting-Hin Yeung, Roger Ting Chih Hwang, Yuen Han Chow, Wen Wendy Tung
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Patent number: 10046501Abstract: Techniques are provided for polymer extrusion. A polyolefin extrusion system may include an extrusion gear pump configured to receive a narrow molecular weight distribution polyolefin from a polyolefin manufacturing system. The polyolefin extrusion system may also include a motor of the extrusion gear pump configured to drive the extrusion gear pump, a pressure sensor configured to generate a pressure signal indicative of a suction pressure into the extrusion gear pump, an automation controller configured to generate an output signal based on the pressure signal, and a variable speed drive configured to control operation of the motor.Type: GrantFiled: March 13, 2013Date of Patent: August 14, 2018Assignee: Chevron Phillips Chemical Company LPInventors: Chih-An Hwang, Keith A. Bravenec, Christopher J. Hunt
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Publication number: 20180008027Abstract: The present invention generally relates to a dual end container for products such as cosmetic products or applicators. More specifically, a dual end container with a compact, integrated mechanism for selectively extending and retracting a first product or applicator without movement of a second product or applicator is disclosed. The dual end container includes a first cup, a second cup, which is at least partially housed within the first cup, and a driving member between the first cup and the second cup. The first cup has a first male thread, the second cup has a second male thread and the driving member has a first and second female thread. The first male thread interacts with the first female thread to extend and retract the first cup. The second male thread interacts with the second female thread to extend and retract the second cup.Type: ApplicationFiled: July 5, 2016Publication date: January 11, 2018Inventors: Ting-Hin YEUNG, Roger Ting Chih HWANG, Yuen Han CHOW, Wen Wendy TUNG
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Publication number: 20140264991Abstract: Techniques are provided for polymer extrusion. A polyolefin extrusion system may include an extrusion gear pump configured to receive a narrow molecular weight distribution polyolefin from a polyolefin manufacturing system. The polyolefin extrusion system may also include a motor of the extrusion gear pump configured to drive the extrusion gear pump, a pressure sensor configured to generate a pressure signal indicative of a suction pressure into the extrusion gear pump, an automation controller configured to generate an output signal based on the pressure signal, and a variable speed drive configured to control operation of the motor.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Chih-An Hwang, Keith A. Bravenec, Christopher J. Hunt
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Patent number: 8396600Abstract: Techniques and systems for the prevention of reactor fouls in polymerization reactors are described. Described embodiments include techniques and systems for performing analyses on reactor data collected over time for the detection of incipient reactor fouling. Techniques are provided for monitoring the state of the reactor as well as for monitoring individual system parameters, including rates of change, for predicting the onset of a reactor foul. In particular, the techniques may be implemented such that predictive proactive control systems may be integrated into polymerization reactor systems to prevent reactor fouling.Type: GrantFiled: July 23, 2010Date of Patent: March 12, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Gregory G. Hendrickson, Chih-An Hwang, Ted H. Cymbaluk
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Publication number: 20120022692Abstract: Techniques and systems for the prevention of reactor fouls in polymerization reactors are described. Described embodiments include techniques and systems for performing analyses on reactor data collected over time for the detection of incipient reactor fouling. Techniques are provided for monitoring the state of the reactor as well as for monitoring individual system parameters, including rates of change, for predicting the onset of a reactor foul. In particular, the techniques may be implemented such that predictive proactive control systems may be integrated into polymerization reactor systems to prevent reactor fouling.Type: ApplicationFiled: July 23, 2010Publication date: January 26, 2012Applicant: Chevron Phillips Chemical Company LPInventors: Gregory G. Hendrickson, Chih-An Hwang, Ted H. Cymbaluk
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Patent number: 7207252Abstract: Determining cook-off time for a weapon is disclosed. A method determines a first barrel temperature next to a first energetic, such as a propellant charge, of ammunition within a gun barrel, and determines a second barrel temperature next to a second energetic, such as an explosive charge, of the ammunition. If the ammunition did not properly fire, the method determines a first cook-off time of the first energetic based on the first temperature next to the first energetic and the first energetic's type, and a second cook-off time of the second energetic based on the second temperature next to the second energetic and the second energetic's type. The first and second times may be determined by using one or more finite-difference heat transfer models. If either or both of the first and second times are less than a threshold, a warning-related action is performed to users of the weapon.Type: GrantFiled: May 8, 2006Date of Patent: April 24, 2007Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles T. Boyer, Jr., Michael K. Oetjen, Din-chih Hwang, Robert V. Krueger, Raymond D. Cooper
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Patent number: 7066072Abstract: Determining cook-off time for a weapon is disclosed. A method determines a first barrel temperature next to a first energetic, such as a propellant charge, of ammunition within a gun barrel, and determines a second barrel temperature next to a second energetic, such as an explosive charge, of the ammunition. If the ammunition did not properly fire, the method determines a first cook-off time of the first energetic based on the first temperature next to the first energetic and the first energetic's type, and a second cook-off time of the second energetic based on the second temperature next to the second energetic and the second energetic's type. The first and second times may be determined by using one or more finite-difference heat transfer models. If either or both of the first and second times are less than a threshold, a warning-related action is performed to users of the weapon.Type: GrantFiled: July 16, 2004Date of Patent: June 27, 2006Inventors: Charles T. Boyer, Jr., Michael K. Oetjen, Din-chih Hwang, Robert V. Krueger, Raymond D. Cooper
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Publication number: 20060027086Abstract: Determining cook-off time for a weapon is disclosed. A method determines a first barrel temperature next to a first energetic, such as a propellant charge, of ammunition within a gun barrel, and determines a second barrel temperature next to a second energetic, such as an explosive charge, of the ammunition. If the ammunition did not properly fire, the method determines a first cook-off time of the first energetic based on the first temperature next to the first energetic and the first energetic's type, and a second cook-off time of the second energetic based on the second temperature next to the second energetic and the second energetic's type. The first and second times may be determined by using one or more finite-difference heat transfer models. If either or both of the first and second times are less than a threshold, a warning-related action is performed to users of the weapon.Type: ApplicationFiled: July 16, 2004Publication date: February 9, 2006Inventors: Charles Boyer, Michael Oetjen, Din-chih Hwang, Robert Krueger, Raymond Cooper
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Publication number: 20030220828Abstract: System and method for optimizing polymer production scheduling. The system includes an input, operable to receive optimization input information, a model of a polymer production system including one or more transition models representing transition behavior of the polymer production system, an optimizer, operable to execute the model using the received optimization input information to generate an optimized polymer production schedule, e.g., by solving an objective function subject to constraints, e.g., to minimize/maximize costs/profits and/or to minimize order times, and an output, operable to output the generated optimized polymer production schedule, wherein the optimized polymer production schedule is usable to manage polymer production with a polymer production system.Type: ApplicationFiled: February 24, 2003Publication date: November 27, 2003Inventors: Chih-An Hwang, Kadir Liano, Yong-Zai Lu, Willie Putrajaya, Carl Schweiger