Patents by Inventor Ching Tai

Ching Tai 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).

  • Polyethylene Compositions and Films Prepared Therefrom
    Publication number: 20200231790
    Abstract: A polyethylene composition comprising from about 0.5 to about 20 wt % of alpha-olefin derived units other than ethylene-derived units, with the balance including ethylene-derived units, total internal unsaturations (Vy1+Vy2+T1) of from about 0.10 to about 0.40 per 1000 carbon atoms, an MI of from about 0.1 to about 6 g/10 min, an HLMI of from about 5.0 to about 40 g/10 min, a density of from about 0.890 to about 0.940 g/ml, a Tw1-Tw2 value of from about ?25 to about ?20° C., an Mw1/Mw2 value of from about 1.2 to about 2.0, an Mw/Mn of from about 4.5 to about 12, an Mz/Mw of from about 2.0 to about 3.0, an Mz/Mn of from about 7.0 to about 20, and a g?(vis) greater than 0.90.
    Type: Application
    Filed: June 22, 2018
    Publication date: July 23, 2020
    Inventors: Dongming Li, Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, Laughlin G. McCullough, David F. Sanders, Matthew S. Bedoya
  • Light-emitting device
    Patent number: 10714666
    Abstract: A light-emitting device includes a light body having an internal electrode layer, and a conductive layer. The conductive layer has a first portion formed on the internal electrode layer and overlapping the light body in a first direction, and a second portion overlapping the light body in a second direction. The first direction is perpendicular to the second direction.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: July 14, 2020
    Assignee: Epistar Corporation
    Inventors: Lung-Kuan Lai, Ching-Tai Cheng, Yih-Hua Renn, Min-Hsun Hsieh, Chun-Hung Liu, Shih-An Liao, Ming-Chi Hsu, Yu Chen Liao
  • Mixed catalyst systems with four metallocenes on a single support
    Patent number: 10703838
    Abstract: The present disclosure provides a supported catalyst system and process for use thereof. In particular, the catalyst system includes four different catalysts, a support material and an activator. The catalyst system may be used for preparing polyolefins, such as polyethylene.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: July 7, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, David F. Sanders, Matthew S. Bedoya, Ching-Tai Lue
  • METAL COMPLEXES
    Publication number: 20200190128
    Abstract: Embodiments of the present disclosure are directed towards metal complexes that can be utilized to form polymers. As an example, the present disclosure provides a metal complex of Formula I: wherein each Me represents methyl.
    Type: Application
    Filed: May 16, 2018
    Publication date: June 18, 2020
    Applicant: Univation Technologies, LLC
    Inventors: C. Jeff Harlan, Ching-Tai Lue
  • Camera module and electronic device
    Patent number: 10678309
    Abstract: A camera module including a camera component, a sliding member and a pivotal member is provided. The camera component is rotatably disposed on a body and includes a lens and at least one elastic positioning member. The sliding member is slidably disposed on the body and provided with at least two notches. The pivotal member is disposed on the body and connected with the camera component and the sliding member. The camera component is rotated between a closed position and an open position by the pivotal member and brings the sliding member to move. An electronic device including the camera module is also provided.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: June 9, 2020
    Assignee: COMPAL ELECTRONICS, INC.
    Inventors: Cheng-Shiue Jan, Cheng-Ya Chi, Wei-Hao Lan, Pai-Feng Chen, Ching-Tai Chang
  • Films Made from Polyethylene Compositions and Processes for Making Same
    Publication number: 20200165366
    Abstract: The present disclosure provides films made of polyethylene (PE) compositions. In at least one embodiment, a film includes a polyethylene composition, comprising: ethylene content and from 0 to 25 mol % of C3-C40 olefin comonomer content, based upon the total weight of the polyethylene composition, the polyethylene composition having a total internal plus terminal unsaturation greater than 0.7 unsaturations per 1000 carbon atoms, the film having: an Elmendorf Tear value in the machine direction of from 10 g/mil to 300 g/mil, and a Dart Drop Impact of from 100 g/mil to 800 g/mil. In at least one embodiment, the present disclosure provides for processes to make a film.
    Type: Application
    Filed: June 29, 2018
    Publication date: May 28, 2020
    Inventors: Dongming Li, David M. Fiscus, Kevin A. Stevens, Ching-Tai Lue, Matthew W. Holtcamp
  • Olefin polymerization catalyst systems and methods for making the same
    Patent number: 10662262
    Abstract: Borate activated catalyst systems and methods for making the same for gas phase or slurry phase olefin polymerization are provided. The catalyst system can include a first catalyst comprising a borate activated mono cyclopentadienyl metallocene compound and a second catalyst comprising a supported bis cyclopentadienyl metallocene complex. A supported bis cyclopentadienyl metallocene complex can be prepared to provide a preformed, supported catalyst, wherein the supported bis cyclopentadienyl metallocene complex comprises bis(1,3-methylbutyl cyclopentadienyl) zirconium dichloride. The preformed, supported catalyst can be mixed with mineral oil or hydrocarbon solvent to form a slurry. The slurry can be mixed with a borate activated mono cyclopentadienyl metallocene compound to form the borate activated catalyst system.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 26, 2020
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Dongming Li, Ching-Tai Lue, Phillip T. Matsunaga, Mark B. Davis
  • LIGHT-EMITTING DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20200144467
    Abstract: A light-emitting device includes a light-emitting element, an electrode, a reflective layer and a transparent layer. The reflective layer surrounds the light-emitting element and has an inner surface including a first portion and a second portion. There is a first angle included between the first portion and the first lateral surface, there is a second angle included between the second portion and the first lateral surface, and the first angle is larger than the second angle. The transparent layer includes an outer portion and an inner portion. The outer portion is formed above the upper surface and the inner portion is formed between the reflective layer and the first lateral surface. The outer portion includes wavelength conversion material and the inner portion does not comprise the wavelength conversion material.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 7, 2020
    Inventors: Pei-Hsuan LAN, Ching-Tai CHENG
  • LIGHT-EMITTING DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20200144462
    Abstract: A light-emitting device comprises a light-emitting element, a covering structure, a quantum dot material block, and an adhesive structure is disclosed. The covering structure has a depressed part. The quantum dot material block is filled into the depressed part and enclosed by the light-emitting element and the covering structure. The light-emitting element, the covering structure, and the quantum dot material block are bonded together through the adhesive structure. Since the quantum dot material block is enclosed by the covering structure and the light-emitting element, the outer moisture and oxygen are blocked by the covering structure and the light-emitting element from the quantum dot material block, the decreasing emitting efficiency of the quantum dot material is further alleviated.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 7, 2020
    Inventors: Tsung-Hong Lu, Ching-Tai Cheng
  • Broad orthogonal distribution metallocene polyethylenes for films
    Patent number: 10611867
    Abstract: A polyethylene useful for a film including ethylene derived units and within a range from 0.5 to 20 wt % of C3 to C12 ?-olefin derived units, an I2 value within a range from 0.5 to 20 g/10 min, an I21 value within a range from 5 to 100 g/10 min, the polyethylene formed from a process comprising combining a bridged bis-cyclopentadienyl Group 4 metal catalyst, an unbridged bis-cyclopentadienyl Group 4 metal catalyst, and an activator with ethylene and within a range from 0.1 to 5 wt %, relative to the weight of all monomers, of a C3 to C12 ?-olefin at a temperature within a range from 60 to 100° C.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 7, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Ching-Tai Lue, Adriana S. Silva, Dongming Li, David M. Fiscus
  • Producing polyolefin products
    Patent number: 10604606
    Abstract: Catalyst systems and methods for making and using the same are described. A method includes selecting a catalyst blend using a blend polydispersity index (bPDI) map. The polydispersity map is generated by generating a number of polymers for at least two catalysts. Each polymer is generated at a different hydrogen to ethylene ratio. At least one catalyst generates a higher molecular weight polymer and another catalyst generates a lower molecular weight polymer. A molecular weight for each polymer is measured. The relationship between the molecular weight of the polymers generated by each of the catalysts and the ratio of hydrogen to ethylene is determined. A family of bPDI curves for polymers that would be made using a number of ratios of a blend of the at least two catalysts for each of a number of ratios of hydrogen to ethylene.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 31, 2020
    Assignee: Univation Technologies, LLC
    Inventors: Francis C. Rix, Ching-Tai Lue, Timothy M. Boller, Garth R. Giesbrecht, C. Jeff Harlan
  • Methods for Making Polyolefin Polymer Compositions
    Publication number: 20200056026
    Abstract: A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.
    Type: Application
    Filed: March 23, 2018
    Publication date: February 20, 2020
    Inventors: Ching-Tai Lue, Mark K. Davis, Wesley R. Mariott, Daniel P, Ziiker, Pbuong A. Cao
  • Mixed Catalyst Systems and Methods of Using the Same
    Publication number: 20200048382
    Abstract: Disclosed herein is a catalyst system including a first catalyst compound represented by Formula (I): and a second catalyst compound that is a bridged or unbridged metallocene. M is a group 4 metal. X1 and X2 are independently a univalent C1-C20 hydrocarbyl, C1-C20 substituted hydrocarbyl, a heteroatom or a heteroatom-containing group, or X1 and X2 join together to form a C4-C62 cyclic or polycyclic ring structure. R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 is independently hydrogen, C1-C40 hydrocarbyl, C1-C40 substituted hydrocarbyl, a heteroatom or a heteroatom-containing group, or two or more of R1, R2, R3, R4, R5, R6, R7, R8, R9, or R10 are joined together to form a C4-C62 cyclic or polycyclic ring structure, or a combination thereof. Q is a neutral donor group. Methods of polymerizing with the catalyst system to produce polyolefin polymers are also disclosed.
    Type: Application
    Filed: October 4, 2017
    Publication date: February 13, 2020
    Inventors: Matthew W. Holtcamp, Crisita Carmen H. Atienza, Charles J. Harlan, Xuan Ye, Matthew S. Bedoya, David F. Sanders, David A. Cano, Subramaniam Kuppuswamy, Michelle E. Titone, Ching-Tai Lue, Laughlin G. McCullough, Rohan A. Hule
  • Light-emitting device and manufacturing method thereof
    Patent number: 10522721
    Abstract: A light-emitting device includes a light-emitting element, a wavelength conversion layer, a light pervious element and a light-reflecting enclosure. The light-emitting element includes a top surface, a bottom surface, and a side surface between the top surface and the bottom surface. The wavelength conversion layer covers the top surface of the light-emitting element, and includes a plurality of wavelength conversion particles having an equivalent particle diameter D50. The light pervious element includes a recess structure and an outer wall. The light-reflecting enclosure surrounds the outer wall. The D50 of the wavelength conversion particles is not great than 10 ?m. The recess structure is laterally overlapped with the side surface of the light-emitting element and the wavelength conversion layer.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: December 31, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Ching-Tai Cheng, Chun-Hua Shih, Yih-Hua Renn
  • LIGHT-EMITTING ELEMENT AND THE MANUFACTURING METHOD THEREOF
    Publication number: 20190341523
    Abstract: A light-emitting element having a light-emitting unit, a transparent layer and a wavelength conversion layer formed on the transparent layer. The transparent layer covers the light-emitting unit. The wavelength conversion layer includes a phosphor layer having a phosphor and a stress release layer without the phosphor.
    Type: Application
    Filed: July 17, 2019
    Publication date: November 7, 2019
    Inventors: Ching-Tai CHENG, Ju-Lien KUO, Min-Hsun HSIEH, Shau-Yi CHEN, Shih-An LIAO, Jhih-Hao CHEN
  • METHOD TO PREPARE ETHYLENE COPOLYMERS
    Publication number: 20190322780
    Abstract: Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C5HaR1b)(C5HcR2d)HfX2. The second catalyst compound includes at least one of the following general formulas: In both catalyst systems, the R groups can be independently selected from any number of substituents, including, for example, H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, among others.
    Type: Application
    Filed: June 5, 2019
    Publication date: October 24, 2019
    Applicant: Univation Technologies, LLC
    Inventors: Francis C. Rix, Ching-Tai Lue, C. Jeff Harlan, Laughlin G. McCullough
  • Mixed Catalyst Systems Containing Bridged Metallocenes with a Pendant Group 13 Element, Processes for Making a Polymer Product Using Same, and Products Made from Same
    Publication number: 20190284312
    Abstract: A mixed metallocene catalyst system can comprise at least one metallocene catalyst compound comprising a structure represented by formula (A) below and optionally at least one other metallocene catalyst compound having a structure represented by formula (B) below: A mixed metallocene catalyst system can additionally include a non-coordinating anion type activator comprising a supported alumoxane or aluminum alkyl, and optionally a scavenger. A process for making a polymeric product can comprise: contacting a C2-C22 alpha-olefin feed with the catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture. A polymer product can be made by the process.
    Type: Application
    Filed: January 17, 2019
    Publication date: September 19, 2019
    Inventors: Matthew W. Holtcamp, Subramaniam Kuppuswamy, Matthew S. Bedoya, Kevin A. Stevens, Ching-Tai Lue, Hasnain Rangwalla
  • Light-emitting element and the manufacturing method thereof
    Patent number: 10403789
    Abstract: This disclosure discloses a light-emitting element having a light-emitting unit, a transparent layer and a wavelength conversion layer formed on the transparent layer. The transparent layer covers the light-emitting unit. The wavelength conversion layer includes a phosphor layer having a phosphor and a stress release layer without the phosphor.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: September 3, 2019
    Assignee: Epistar Corporation
    Inventors: Ching-Tai Cheng, Ju-lien Kuo, Min-Hsun Hsieh, Shau-Yi Chen, Shih-An Liao, Jhih-Hao Chen
  • CAMERA MODULE AND ELECTRONIC DEVICE
    Publication number: 20190265760
    Abstract: A camera module including a camera component, a sliding member and a pivotal member is provided. The camera component is rotatably disposed on a body and includes a lens and at least one elastic positioning member. The sliding member is slidably disposed on the body and provided with at least two notches. The pivotal member is disposed on the body and connected with the camera component and the sliding member. The camera component is rotated between a closed position and an open position by the pivotal member and brings the sliding member to move. An electronic device including the camera module is also provided.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Applicant: COMPAL ELECTRONICS, INC.
    Inventors: Cheng-Shiue Jan, Cheng-Ya Chi, Wei-Hao Lan, Pai-Feng Chen, Ching-Tai Chang
  • Light-emitting device and manufacturing method thereof
    Patent number: 10381536
    Abstract: A light-emitting device includes a light-emitting element, a light pervious layer, an electrode defining layer, a first soldering pad and a second soldering pad. The light-emitting element has an upper surface, a bottom surface, and a lateral surface arranged between the upper surface and the bottom surface. The light pervious layer covers the upper surface and the lateral surface. The electrode defining layer covers a part of the light pervious layer. The first soldering pad and the second soldering pad are surrounded by the electrode defining layer. A gap is located between the first soldering pad and the second soldering pad while the gap remains substantially constant.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: August 13, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Ching-Tai Cheng, Lung-Kuan Lai, Yih-Hua Renn, Min-Hsun Hsieh