Patents by Inventor Chih-Jian Chen

Chih-Jian Chen 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).

  • Patent number: 6887817
    Abstract: An olefin polymerization catalyst is described which includes: (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, an electron donor and a titanium compound, and (B) an organoaluminum compound. The present invention is also directed to a process for preparing polyolefins using the aforesaid catalyst system to polymerize olefins.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: May 3, 2005
    Assignee: Formosa Plastics Corporation, U.S.A.
    Inventors: Bing Lu, Honglan Lu, Chih-Jian Chen
  • Publication number: 20050009690
    Abstract: A solid catalyst component useful for the (co)-polymerization of olefins is disclosed. The catalyst component is prepared by reacting an activated magnesium halide composite support with a halogenized transition metal compound and a chelating diamide compound in the presence of organo-magnesium as a promoting agent and halogenized silicon or boron compounds as an activator. The catalyst component can be used with an organo-aluminum compound to provide a solid catalyst system that is compatible with slurry and gas phase polymerization processes. Linear low density polyethylene (LLDPE) produced using the catalyst component of the present invention displays a low molecular weight distribution, improved co-monomer incorporation, low content of the low molecular weight component, and excellent morphological properties such as spherical shape and high bulk density.
    Type: Application
    Filed: July 10, 2003
    Publication date: January 13, 2005
    Inventors: Guangxue Xu, Honglan Lu, Chih-Jian Chen
  • Publication number: 20040157727
    Abstract: A magnesium halide support material for a polyolefin catalysts is disclosed. The magnesium halide of present invention is prepared by reacting magnesium with an alkylhalide in a non-polar hydrocarbon solvent. Preparation of the support does not require the use electron donating solvents and therefore does not require extensive washing to remove the solvent from the support.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 12, 2004
    Inventors: Honglan Lu, Gapgoung Kong, Zhongyang Liu, Chih-Jian Chen
  • Patent number: 6767831
    Abstract: A method for forming salicides with reduced junction leakage including providing a semiconductor process wafer comprising a silicon substrate; inducing amorphization within the silicon substrate to a form a first amorphous region having a first predetermined depth measured from the silicon substrate surface; carrying out at least one first thermal annealing process to controllably partially recrystallize the first amorphous region to produce a second amorphous region having a second predetermined depth less than the first predetermined depth; depositing a metal layer over selected areas of the silicon substrate comprising the second amorphous region; and, carrying out at least one second thermal annealing process to form a metal silicide.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: July 27, 2004
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Hong-Yuan Chu, Chih-Jian Chen
  • Publication number: 20040039139
    Abstract: An olefin polymerization catalyst is described which includes: (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, an electron donor and a titanium compound, and (B) an organoaluminum compound. The present invention is also directed to a process for preparing polyolefins using the aforesaid catalyst system to polymerize olefins.
    Type: Application
    Filed: August 27, 2003
    Publication date: February 26, 2004
    Applicant: Formosa Plastics Co., U.S.A.
    Inventors: Bing Lu, Honglan Lu, Chih-Jian Chen
  • Publication number: 20030069372
    Abstract: An olefin polymerization catalyst is described which includes: (A) a solid catalyst component being prepared by copulverizing a magnesium compound, an aluminum compound, an electron donor and a titanium compound, and (B) an organoaluminum compound. The present invention is also directed to a process for preparing polyolefins using the aforesaid catalyst system to polymerize olefins.
    Type: Application
    Filed: October 9, 2001
    Publication date: April 10, 2003
    Applicant: Formosa Plastics Corporation, U.S.A.
    Inventors: Bing Lu, Honglan Lu, Chih-Jian Chen
  • Patent number: 6394409
    Abstract: An observable sample mounting fixture for mounting an IC specimen to a protective substrate is provided. In the sample mounting fixture, a base portion and a top portion are provided which are integrally connected together with a cavity therein-between for receiving a specimen. The base portion is further provided with an observation window such that the state of cure of an adhesive layer between a substantially transparent substrate and the IC specimen can be observed in real time. During an early observation, i.e., when the sandwiched structure is only cured for 2-5 minutes, the sandwiched structure can be easily disassembled when bubbles are observed. By utilizing the present invention novel sample mounting fixture, valuable test specimens can be saved for providing valuable quality control and reliability data.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: May 28, 2002
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Jian Chen, Chin-Kai Liu