Patents by Inventor Weichang Liu

Weichang 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).

  • Publication number: 20160049525
    Abstract: A flash memory structure includes a memory gate on a substrate, a select gate adjacent to the memory gate, and an oxide-nitride spacer between the memory gate and the select gate, where the oxide-nitride spacer further includes an oxide layer and a nitride layer having an upper nitride portion and a lower nitride portion, and the upper nitride portion is thinner than the lower nitride portion.
    Type: Application
    Filed: August 18, 2014
    Publication date: February 18, 2016
    Inventors: Weichang Liu, Zhen Chen, Shen-De Wang, Wei Ta, Yi-Shan Chiu, Yuan-Hsiang Chang
  • Patent number: 8597708
    Abstract: A food composition comprising gas bubbles is provided. It contains based on the food composition at least 10 wt. % of water, optionally fat, wherein the amount of fat and water taken together is at least 60 wt. % and less than 99 wt. %, at least 1 vol. % and less than 70 vol. % of gas, fiber particles and surface active particles. The volume weighted mean diameter of the surface active particles (d2) is smaller than the length of the fiber particles (L). Also a process is provided to prepare the product. The process includes the steps of incorporating surface active particles and fiber particles in a liquid food composition, incorporating gas in said liquid composition and packing the food composition.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: December 3, 2013
    Assignee: Conopco, Inc.
    Inventors: Theodorus Berend Jan Blijdenstein, Jian Cao, Petrus Wilhelmus N de Groot, Weichang Liu, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Patent number: 8309154
    Abstract: There is provided a surface-active material that comprises fibers which have been modified so as to impart surface-active properties onto said fibres and giving it a contact angle between 60° and 120°, wherein the fibres have an aspect ratio of more than 10 to 1,000. The surface-active material can be used for foam and emulsion formation and stabilization, coatings, encapsulation and drug delivery. It can for example be used in the following industries: foods, home and personal care, oilfield, agriculture, textile, construction, emulsion polymerization, leather, plastic, pulp, paper and pharma.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: November 13, 2012
    Assignee: Conopco, Inc.
    Inventors: Ya Cai, Jian Cao, Matthew Duncan Golding, Weichang Liu, Vesselin Nikolaev Paunov, Edward George Pelan, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Publication number: 20110081484
    Abstract: Process for producing a core shell particle comprising the steps of: a. Introducing inorganic particles into an aqueous phase b. Adding a hydrophobic substance and making an emulsion of the hydrophobic substance in the aqueous phase c. Adding inorganic particles precursors to the emulsion until an inorganic shell made from inorganic particles precursors and inorganic particles of step a. is created around hydrophobic droplets.
    Type: Application
    Filed: June 4, 2009
    Publication date: April 7, 2011
    Inventors: Jian Cao, Weichang Liu, Xiaoli Wang, Weizheng Zhou
  • Publication number: 20100291280
    Abstract: A food composition comprising gas bubbles is provided. It contains based on the food composition at least 10 wt % and less than 95 wt % of water, at least 0.5 wt % and less than 20 wt % of protein, at least 1 vol. % and less than 70 vol. % of gas, at least 0.001 wt % and less than 10 wt % fibre particles and at least 0.001 wt % and less than 10 wt % surface active particles. Also a process is provided to prepare the product. The process includes the steps of incorporating surface active particles and fibre particles in a liquid food composition, incorporating gas in said liquid composition and packing the food composition.
    Type: Application
    Filed: September 11, 2007
    Publication date: November 18, 2010
    Inventors: Theodorus Berend Jan Blijdenstein, Jian Cao, Petrus Wilhelmus N De Groot, Weichang Liu, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Publication number: 20100222439
    Abstract: This invention relates to a polymeric polyphenol containing beverage, In particular it relates to a substantially clear ambient temperature beverage comprising tea solids derived from fermented tea. The invention also relates to a method for improving the clarity of a polymeric polyphenol containing liquid composition. It has long been observed that on cooling an aqueous black tea infusion from about 90 degrees Celsius to ambient temperature, a marked increase in the turbidity of the infusion can be seen leading ultimately to precipitation of up to about 30% w/w of the total tea solids. This precipitate is known as tea cream. It is thought that this precipitate originates from initial self-associations of polymeric polyphenols and association with caffeine thereby forming nano-clusters. These nano-clusters are not themselves responsible for any turbidity or precipitation of tea solids.
    Type: Application
    Filed: February 24, 2010
    Publication date: September 2, 2010
    Applicant: CONOPCO, INC., D/B/A UNILEVER
    Inventors: Haitao Chen, Weichang Liu, Dabin Xie
  • Publication number: 20100186420
    Abstract: The invention relates to a frozen aerated frozen food product having an overrun of at least 30% comprising 0.001 to 10 weight-% (wt-%), based on the total weight of the frozen aerated food product, of surface-active fibres.
    Type: Application
    Filed: October 1, 2007
    Publication date: July 29, 2010
    Inventors: Mark John Berry, Andrew Richard Cox, Weichang Liu, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Publication number: 20100189867
    Abstract: A food composition comprising gas bubbles is provided. It contains based on the food composition at least 10 wt. % of water, optionally fat, wherein the amount of fat and water taken together is at least 60 wt. % and less than 99 wt. %, at least 1 vol. % and less than 70 vol. % of gas, fibre particles and surface active particles. The volume weighted mean diameter of the surface active particles (d2) is smaller than the length of the fibre particles (L). Also a process is provided to prepare the product. The process includes the steps of incorporating surface active particles and fibre particles in a liquid food composition, incorporating gas in said liquid composition and packing the food composition.
    Type: Application
    Filed: October 3, 2007
    Publication date: July 29, 2010
    Inventors: Theodorus Berend Jan Blijdenstein, Jian Cao, Petrus Wilhelmus N. de Groot, Weichang Liu, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Publication number: 20100189857
    Abstract: There is provided an aerated food product in the form of a stable foam, comprising 5-80 vol. % gas bubbles, 15-90 wt. % water and 0.01 to 10 wt. % fibres, assembled with surface-active particles at the air-water interface due to attractive interaction between the surface-active particles and the fibres. Also provided is a process for preparing said foam.
    Type: Application
    Filed: September 13, 2007
    Publication date: July 29, 2010
    Inventors: Theodorus Berend Jan Blijdenstein, Jian Cao, Petrus Wilhelmus N de Groot, Weichang Liu, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Publication number: 20090306223
    Abstract: There is provided a surface-active material that comprises fibres which have been modified so as to impart surface-active properties onto said fibres and giving it a contact angle between 60° and 120°, wherein the fibres have an aspect ratio of more than 10 to 1,000. The surface-active material can be used for foam and emulsion formation and stabilisation, coatings, encapsulation and drug delivery. It can for example be used in the following industries: foods, home and personal care, oilfield, agriculture, textile, construction, emulsion polymerisation, leather, plastic, pulp, paper and pharma.
    Type: Application
    Filed: November 22, 2006
    Publication date: December 10, 2009
    Inventors: Ya Cai, Jian Cao, Matthew Duncan Golding, Weichang Liu, Vesselin Nikolaev Paunov, Edward George Pelan, Simeon Dobrev Stoyanov, Weizheng Zhou
  • Publication number: 20090016978
    Abstract: An antiperspirant composition comprising a carrier substance and a water-soluble or water-dispersible thiolated polymer.
    Type: Application
    Filed: December 15, 2006
    Publication date: January 15, 2009
    Inventors: Jean-Philippe Andre Roger Courtois, Weichang Liu, Ian Karl Smith, Lin Wang, Michael Stephen White, Qiqing Zhang