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).

  • Publication number: 20240113071
    Abstract: 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: Application
    Filed: January 5, 2023
    Publication date: April 4, 2024
    Inventors: 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
  • Patent number: 11942451
    Abstract: 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: Grant
    Filed: August 30, 2021
    Date of Patent: March 26, 2024
    Assignee: 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
  • Patent number: 9634389
    Abstract: 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: Grant
    Filed: April 26, 2013
    Date of Patent: April 25, 2017
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Chien Tseng, Ming-Hung Cheng, Hsin-Piao Lin, Ching-Jen Chang
  • Publication number: 20140139373
    Abstract: 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: Application
    Filed: April 26, 2013
    Publication date: May 22, 2014
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Chien Tseng, Ming-Hung Cheng, Hsin-Piao Lin, Ching-Jen Chang
  • Patent number: 7932222
    Abstract: 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: Grant
    Filed: January 21, 2003
    Date of Patent: April 26, 2011
    Assignee: Rohm and Haas Company
    Inventors: Hailan Guo, Ching-Jen Chang
  • Patent number: 7312259
    Abstract: 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: Grant
    Filed: July 22, 2004
    Date of Patent: December 25, 2007
    Assignee: Rohm and Haas Company
    Inventors: Joseph Robert Adamo, Ching-Jen Chang, Hailan Guo, Charles Elwood Jones, Stephane Pierre Jean Ugazio
  • Publication number: 20050075266
    Abstract: 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: Application
    Filed: September 9, 2004
    Publication date: April 7, 2005
    Inventors: Ching-Jen Chang, Hailan Guo
  • Publication number: 20050043458
    Abstract: 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: Application
    Filed: July 22, 2004
    Publication date: February 24, 2005
    Inventors: Joseph Adamo, Ching-Jen Chang, Hailan Guo, Charles Jones, Stephane Pierre Ugazio
  • Publication number: 20050043453
    Abstract: 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: Application
    Filed: July 22, 2004
    Publication date: February 24, 2005
    Inventors: Ching-Jen Chang, Robert Coyle, Hailan Guo, Charles Jones, Stephane Jean Ugazio
  • Publication number: 20040110891
    Abstract: 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: Application
    Filed: November 21, 2003
    Publication date: June 10, 2004
    Inventors: Hailan Guo, Ching-Jen Chang
  • Publication number: 20040030034
    Abstract: 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: Application
    Filed: July 29, 2003
    Publication date: February 12, 2004
    Inventors: Ching-Jen Chang, Richard Thomas Gray, Hailan Guo, Barry Weinstein
  • Publication number: 20030164476
    Abstract: 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: Application
    Filed: January 21, 2003
    Publication date: September 4, 2003
    Inventors: Hailan Guo, Ching-Jen Chang
  • Patent number: 6384104
    Abstract: 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: Grant
    Filed: October 3, 2000
    Date of Patent: May 7, 2002
    Assignee: Rohm and Haas Company
    Inventors: Ching-Jen Chang, Charles Elwood Jones, Barry Weinstein
  • Patent number: 6368575
    Abstract: 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: Grant
    Filed: September 8, 1999
    Date of Patent: April 9, 2002
    Assignee: Rohm and Haas Company
    Inventors: Ching-Jen Chang, Andrea Claudette Keenan, Curtis Schwartz
  • Publication number: 20010003581
    Abstract: 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: Application
    Filed: September 8, 1999
    Publication date: June 14, 2001
    Inventors: CHING-JEN CHANG, ANDREA CLAUDETTE KEENAN, CURTIS SCHWARTZ
  • Patent number: 6214328
    Abstract: 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: Grant
    Filed: September 8, 1999
    Date of Patent: April 10, 2001
    Assignee: Rohm and Haas Company
    Inventors: Ching-Jen Chang, Andrea Claudette Keenan, Curtis Schwartz
  • Patent number: 5955549
    Abstract: 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: Grant
    Filed: May 14, 1998
    Date of Patent: September 21, 1999
    Inventors: Ching-Jen Chang, Graham Swift
  • Patent number: 4914170
    Abstract: 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: Grant
    Filed: November 17, 1987
    Date of Patent: April 3, 1990
    Assignee: Rohm and Haas Company
    Inventors: Ching-Jen Chang, Walter DeWitt
  • Patent number: 4663385
    Abstract: 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: Grant
    Filed: November 17, 1982
    Date of Patent: May 5, 1987
    Assignee: Rohm and Haas
    Inventors: Ching-Jen Chang, Travis E. Stevens
  • Patent number: 4429097
    Abstract: 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: Grant
    Filed: September 16, 1982
    Date of Patent: January 31, 1984
    Assignee: Rohm and Haas Company
    Inventors: Ching-Jen Chang, Travis E. Stevens