Patents by Inventor Ching-Jen Chang
Ching-Jen Chang 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: 20240113071Abstract: An integrated circuit package including electrically floating metal lines and a method of forming are provided. The integrated circuit package may include integrated circuit dies, an encapsulant around the integrated circuit dies, a redistribution structure on the encapsulant, a first electrically floating metal line disposed on the redistribution structure, a first electrical component connected to the redistribution structure, and an underfill between the first electrical component and the redistribution structure. A first opening in the underfill may expose a top surface of the first electrically floating metal line.Type: ApplicationFiled: January 5, 2023Publication date: April 4, 2024Inventors: Chung-Shi Liu, Mao-Yen Chang, Yu-Chia Lai, Kuo-Lung Pan, Hao-Yi Tsai, Ching-Hua Hsieh, Hsiu-Jen Lin, Po-Yuan Teng, Cheng-Chieh Wu, Jen-Chun Liao
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Patent number: 11942451Abstract: A semiconductor structure includes a functional die, a dummy die, a redistribution structure, a seal ring and an alignment mark. The dummy die is electrically isolated from the functional die. The redistribution structure is disposed over and electrically connected to the functional die. The seal ring is disposed over the dummy die. The alignment mark is between the seal ring and the redistribution structure, wherein the alignment mark is electrically isolated from the dummy die, the redistribution structure and the seal ring. The insulating layer encapsulates the functional die and the dummy die.Type: GrantFiled: August 30, 2021Date of Patent: March 26, 2024Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Mao-Yen Chang, Yu-Chia Lai, Cheng-Shiuan Wong, Ting Hao Kuo, Ching-Hua Hsieh, Hao-Yi Tsai, Kuo-Lung Pan, Hsiu-Jen Lin
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Patent number: 9634389Abstract: A multipath switching system comprising of an adjustable phase shift array includes, an adjustable phase shift array module and a control module. The adjustable phase shift array module receives a radio-frequency (RF) signal, and includes at least one RF switch, at least one coupler and at least one phase shifter. The at least one RF switch, the at least one coupler and the at least one phase shifter form a number of transmission paths. The transmission paths respectively produce the processed transmission RF signals corresponding to different phase shifts to an antenna array. The control module controls the at least one RF switch and the at least one phase shifter of the adjustable phase shift array module, so that the antenna array radiates a wireless signal whose direction is corresponding to a predetermined angle in space polar coordinates.Type: GrantFiled: April 26, 2013Date of Patent: April 25, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ming-Chien Tseng, Ming-Hung Cheng, Hsin-Piao Lin, Ching-Jen Chang
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Publication number: 20140139373Abstract: A multipath switching system comprising of an adjustable phase shift array includes, an adjustable phase shift array module and a control module. The adjustable phase shift array module receives a radio-frequency (RF) signal, and includes at least one RF switch, at least one coupler and at least one phase shifter. The at least one RF switch, the at least one coupler and the at least one phase shifter form a number of transmission paths. The transmission paths respectively produce the processed transmission RF signals corresponding to different phase shifts to an antenna array. The control module controls the at least one RF switch and the at least one phase shifter of the adjustable phase shift array module, so that the antenna array radiates a wireless signal whose direction is corresponding to a predetermined angle in space polar coordinates.Type: ApplicationFiled: April 26, 2013Publication date: May 22, 2014Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ming-Chien Tseng, Ming-Hung Cheng, Hsin-Piao Lin, Ching-Jen Chang
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Patent number: 7932222Abstract: This invention provides a triggered response composition in the form of a barrier material and a delivery device that includes one or more polyelectrolytes in contact with an aqueous system that is stable and insoluble in an aqueous system and that exhibits one or more chemical/physical responses in the aqueous system, wherein the chemical/physical response of the composition is triggered upon one or more changes in ionic strength of the aqueous system.Type: GrantFiled: January 21, 2003Date of Patent: April 26, 2011Assignee: Rohm and Haas CompanyInventors: Hailan Guo, Ching-Jen Chang
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Patent number: 7312259Abstract: The present invention relates to a process for preparing dry polymer granules having increased minimum ignition energy, lowered to unchanged maximum explosion pressure, lowered explosion strength (Kst) coupled with reduced dusting levels by drying a mixture including one or more emulsion polymers and one or more surfactants having HLB values between 10 and 25.Type: GrantFiled: July 22, 2004Date of Patent: December 25, 2007Assignee: Rohm and Haas CompanyInventors: Joseph Robert Adamo, Ching-Jen Chang, Hailan Guo, Charles Elwood Jones, Stephane Pierre Jean Ugazio
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Publication number: 20050075266Abstract: The present invention relates to a composition and process for stabilizing the rheology of softeners including fragrances and softeners including added fragrances using cationic emulsion polymers.Type: ApplicationFiled: September 9, 2004Publication date: April 7, 2005Inventors: Ching-Jen Chang, Hailan Guo
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Publication number: 20050043458Abstract: The present invention relates to a process for preparing dry polymer granules having increased minimum ignition energy, lowered to unchanged maximum explosion pressure, lowered explosion strength (Kst) coupled with reduced dusting levels by drying a mixture including one or more emulsion polymers and one or more surfactants having HLB values between 10 and 25.Type: ApplicationFiled: July 22, 2004Publication date: February 24, 2005Inventors: Joseph Adamo, Ching-Jen Chang, Hailan Guo, Charles Jones, Stephane Pierre Ugazio
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Publication number: 20050043453Abstract: The present invention relates to a process for preparing dry polymer granules, particles and powders having increased minimum ignition energy, lowered to unchanged maximum explosion pressure, lowered explosion strength (Kst) coupled with reduced dusting levels by coagulating one or more emulsion polymers using one or more cationic surfactants including one or more other coagulating agents, filtering the coagulated slurry and drying the coagulated slurry.Type: ApplicationFiled: July 22, 2004Publication date: February 24, 2005Inventors: Ching-Jen Chang, Robert Coyle, Hailan Guo, Charles Jones, Stephane Jean Ugazio
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Publication number: 20040110891Abstract: This invention provides barrier materials and devices prepared from multi-stage polymer compositions that protect active ingredients and beneficial agents in an aqueous system and that are triggered to release such agents to an environment of use.Type: ApplicationFiled: November 21, 2003Publication date: June 10, 2004Inventors: Hailan Guo, Ching-Jen Chang
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Publication number: 20040030034Abstract: This invention provides a triggered response composition in the form of a barrier material and a delivery device that includes one or more polyelectrolytes in contact with an aqueous system that is stable and insoluble in a liquid medium and that exhibits one or more chemical/physical responses in the liquid medium, wherein the chemical/physical response of the composition is triggered upon a change of ionic strength in the liquid medium.Type: ApplicationFiled: July 29, 2003Publication date: February 12, 2004Inventors: Ching-Jen Chang, Richard Thomas Gray, Hailan Guo, Barry Weinstein
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Publication number: 20030164476Abstract: This invention provides a triggered response composition in the form of a barrier material and a delivery device that includes one or more polyelectrolytes in contact with an aqueous system that is stable and insoluble in an aqueous system and that exhibits one or more chemical/physical responses in the aqueous system, wherein the chemical/physical response of the composition is triggered upon one or more changes in ionic strength of the aqueous system.Type: ApplicationFiled: January 21, 2003Publication date: September 4, 2003Inventors: Hailan Guo, Ching-Jen Chang
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Patent number: 6384104Abstract: A method for improving the storage stability of personal care formulations containing ultraviolet (UV) radiation-absorbing agents (sunscreen agents) is disclosed. Latex polymer particles containing a void, having a particle size from 50 to 1000 nanometers, and having at least 4% polymerized crosslinker monomer units in the shell portion of the particle are especially effective in maintaining storage stability and effectiveness of sunscreen formulations when added to personal care compositions containing at least one sunscreen agent.Type: GrantFiled: October 3, 2000Date of Patent: May 7, 2002Assignee: Rohm and Haas CompanyInventors: Ching-Jen Chang, Charles Elwood Jones, Barry Weinstein
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Patent number: 6368575Abstract: A method for improving the corrosion resistance of aerosol or foam hair spray formulations in metal containers is disclosed. In particular, the present invention involves the use of phosphate ester emulsifiers in the preparation of the emulsion polymer hair fixative resins to provide corrosion resistance of the hair styling composition in metal containers without negatively affecting the performance of the hair styling product itself. Use of the selected emulsifiers is particularly useful in non-corrosive aqueous hair styling compositions containing low (80% or less) volatile organic compound (VOC) concentrations.Type: GrantFiled: September 8, 1999Date of Patent: April 9, 2002Assignee: Rohm and Haas CompanyInventors: Ching-Jen Chang, Andrea Claudette Keenan, Curtis Schwartz
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Publication number: 20010003581Abstract: A method for improving the corrosion resistance of aerosol or foam hair spray formulations in metal containers is disclosed. In particular, the present invention involves the use of phosphate ester emulsifiers in the preparation of the emulsion polymer hair fixative resins to provide corrosion resistance of the hair styling composition in metal containers without negatively affecting the performance of the hair styling product itself. Use of the selected emulsifiers is particularly useful in non-corrosive aqueous hair styling compositions containing low (80% or less) volatile organic compound (VOC) concentrations.Type: ApplicationFiled: September 8, 1999Publication date: June 14, 2001Inventors: CHING-JEN CHANG, ANDREA CLAUDETTE KEENAN, CURTIS SCHWARTZ
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Patent number: 6214328Abstract: A method for enhancing the performance of hair fixative resins in hair styling compositions by using selected polymers having certain compositions is disclosed. In particular, the present invention involves a method of improving the stiffness performance of hair fixative resins by using polymers containing 5-95% (C1-C10)alkyl (meth)acrylate, 0-70% hydroxyalkyl (meth)acrylate, 0-50% monocarboxylic acid monomer and 1-25% dicarboxylic acid monomer. The selected polymers are particularly useful in aqueous hair styling compositions containing low (80% or less) volatile organic compound (VOC) concentrations.Type: GrantFiled: September 8, 1999Date of Patent: April 10, 2001Assignee: Rohm and Haas CompanyInventors: Ching-Jen Chang, Andrea Claudette Keenan, Curtis Schwartz
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Patent number: 5955549Abstract: Crosslinked poly(amino acids) useful as superabsorbent polymers and an improved process for preparing the crosslinked poly(amino acids) is disclosed. Use of polyaziridine and polyepoxide crosslinkers allows the production of superabsorbent polymers that is free of special handling steps required to process hydrogel materials using conventional preparation methods.Type: GrantFiled: May 14, 1998Date of Patent: September 21, 1999Inventors: Ching-Jen Chang, Graham Swift
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Patent number: 4914170Abstract: Superabsorbent polymeric compositions are prepared from monomer including acrylic acid and an effective amount of a second hydrophilic monomer, which can be a soluble salt of beta-acryloxypropionic acid. Preferably, the pH of the aqueous monomer solution is adjusted to substantially exclude free acid, and the aqueous monomer solution is coated onto a heated surface to both polymerize the monomer and dry the resulting hydrogel. Free acid thermal degradation products are avoided and the superabsorbent product has greater absorption capacity than acrylate homopolymer.Type: GrantFiled: November 17, 1987Date of Patent: April 3, 1990Assignee: Rohm and Haas CompanyInventors: Ching-Jen Chang, Walter DeWitt
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Patent number: 4663385Abstract: There is disclosed a process of thickening an aqueous system comprising adding to the system aqueous dispersions of water-insoluble emulsion copolymers of (1) about 10-70% by weight of (meth)acrylic acid or itaconic acid, (2) about 0.5-25% by weight of an alkyl poly(oxyethylene) itaconate, and (3) at least 25% by weight, to a total of 100%, of a C.sub.1 -C.sub.4 alkyl (meth)acrylate, and, optionally, included in the total monomer mixture a small amount of (4) about 0.05-1% by weight of a polyethylenically unsaturated monomer. The copolymers, when neutralized and solubilized by addition of an alkali, are high efficiency thickeners for aqueous systems and have improved tolerance to ionic or electrolyte content. Typical systems that can be thickened are paint latices, cosmetic preparations, food preparations, ionic detergents, dye pastes for textiles, pharmaceuticals, and oil well drilling muds. Surfactants enhance the thickening properties afforded by the copolymers.Type: GrantFiled: November 17, 1982Date of Patent: May 5, 1987Assignee: Rohm and HaasInventors: Ching-Jen Chang, Travis E. Stevens
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Patent number: 4429097Abstract: There are disclosed polymerizable alkyl poly(oxyalkylene) esters of an acrylate oligomer and copolymers thereof, especially stable, aqueous dispersions of water-insoluble emulsion copolymers of (1) about 10-70% by weight of methacrylic or acrylic acid, (2) about 0.5-25% by weight of an alkyl poly(oxyalkylene) ester of an acrylate oligomer, and (3) at least 25% by weight, to a total of 100%, of a C.sub.1 -C.sub.4 alkyl (meth)acrylate, and optionally, included in the total monomer mixture, a small amount of (4) about 0.5-1% by weight, of a polyethylenically unsaturated monomer. The copolymers, when neutralized and solubilized by addition of an alkali, are high efficiency thickeners for aqueous systems and have improved tolerance to ionic or electrolyte content. Typical systems that can be thickened are paint latices, cosmetic preparations, food preparations, ionic detergents, dye pastes for textiles, pharmaceuticals, and oil well drilling muds.Type: GrantFiled: September 16, 1982Date of Patent: January 31, 1984Assignee: Rohm and Haas CompanyInventors: Ching-Jen Chang, Travis E. Stevens