Patents by Inventor Lizhi Liu

Lizhi Liu 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).

  • Propylene-based copolymers, a method of making the fibers and articles made from the fibers
    Patent number: 7101622
    Abstract: Fibers that exhibit good elasticity or extensibility and tenacity, and low modulus are prepared from propylene-based copolymers. The propylene-based copolymers comprise at least about 50 weight percent (wt %) of units derived from propylene and at least about 8 wt % of units derived from one or more comonomers other than propylene, e.g., ethylene. Particularly preferred propylene copolymers are characterized as having 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In one aspect of the invention, fibers are subjected to stress-induced crystallization by subjecting the fiber to tensile elongation during draw.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: September 5, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Andy C. Chang, Hong Peng, Jozef J. I. Van Dun, Randy E. Pepper, Edward N. Knickerbocker, Antonios K. Doufas, Rajen M. Patel, Lizhi Liu, Byron P. Day, Stephen M. Englebert, Joy F. Jordan, Renette E. Richard, Christian L. Sanders, Varunesh Sharma
  • Propylene-based copolymers, a method of making the fibers and articles made from the fibers
    Publication number: 20050244638
    Abstract: Fibers that exhibit good elasticity or extensibility and tenacity, and low modulus are prepared from propylene-based copolymers. The propylene-based copolymers comprise at least about 50 weight percent (wt %) of units derived from propylene and at least about 8 wt % of units derived from one or more comonomers other than propylene, e.g., ethylene. Particularly preferred propylene copolymers are characterized as having 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In one aspect of the invention, fibers are subjected to stress-induced crystallization by subjecting the fiber to tensile elongation during draw.
    Type: Application
    Filed: March 18, 2005
    Publication date: November 3, 2005
    Inventors: Andy Chang, Hong Peng, Jozef Van Dun, Randy Pepper, Edward Knickerbocker, Antonios Doufas, Rajen Patel, Lizhi Liu, Byron Day, Stephen Englebert, Joy Jordan, Renette Richard, Christian Sanders, Varunesh Sharma
  • Process for producing diesel oils of superior quality and low solidifying point from fraction oils
    Patent number: 6413412
    Abstract: This invention discloses a single-stage process for producing diesel oils of superior quality and low solidifying point from fraction oils under controlled reaction conditions, comprising a hydrorefining step, optionally a hydroupgrading step and a hydrodewaxing step combined in series. The process of the invention is simplified, the operation is simple, the adaptability to feedstocks is good, and the quality of diesel oil product is improved, and when the hydroupgrading step is comprised, the cetane number of the product is further boosted. A hydrorefining catalyst having a higher content of NiO and good anti-coking performance and a hydroupgrading catalyst and hydrodewaxing catalyst having an adequate acidity and strong resistance to NH3 and H2S respectively are preferably used in the present invention to achieve better results.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: July 2, 2002
    Assignees: China Petrochemical Corporation, Fushun Research Institute of Petroleum and Petrochemicals, Sinopec
    Inventors: Yan Peng, Xianglan Meng, Weiping Fang, Lixiu Zhang, Lizhi Liu