Patents by Inventor Xuan Truong Nguyen

Xuan Truong Nguyen 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).

  • SPECTACLE LENS FOR A DISPLAY DEVICE WHICH CAN BE PLACED ONTO THE HEAD OF A USER AND GENERATES AN IMAGE, AND DISPLAY DEVICE COMPRISING SUCH A SPECTACLE LENS
    Publication number: 20230333407
    Abstract: A spectacle lens for a display device is of multi-shell construction. A first shell includes a first interface facing towards a second shell. The second shell includes a second interface facing towards the first shell. The two shells are connected to one another via the two interfaces. The deflection portion includes at least one reflective deflection element or a plurality of reflective deflection elements arranged next to one another that are formed in the second shell. At least one of the deflection elements projects relative to the second interface in order to serve as a spacer that predefines the spacing of the two shells connected to one another.
    Type: Application
    Filed: April 12, 2023
    Publication date: October 19, 2023
    Inventors: Michael POLLMANN, Georg MICHELS, Xuan Truong NGUYEN
  • PROCESS FOR MANUFACTURING PULP, PAPER AND PAPERBOARD PRODUCTS
    Publication number: 20110315331
    Abstract: A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
    Type: Application
    Filed: June 17, 2011
    Publication date: December 29, 2011
    Applicant: INTERNATIONAL PAPER COMPANY
    Inventor: Xuan Truong Nguyen
  • Process for non-chlorine oxidative bleaching of mechanical pulp in the presence of optical brightening agents
    Patent number: 7967948
    Abstract: A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: June 28, 2011
    Assignee: International Paper Company
    Inventor: Xuan Truong Nguyen
  • Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness
    Patent number: 7638016
    Abstract: The present invention relates to a method of increasing the brightness of pulp, pulp made from such methods and methods of using such pulp.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: December 29, 2009
    Assignee: International Paper Company
    Inventor: Xuan Truong Nguyen
  • Process for manufacturing pulp, paper and paperboard products
    Publication number: 20090145562
    Abstract: A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 11, 2009
    Inventor: Xuan Truong Nguyen
  • Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board
    Patent number: 7497924
    Abstract: The present invention relates to the production of texturized microcrystalline cellulose from raw pulp material. This texturized microcrystalline cellulose can then be used for surface treatment of paper or paper board. Additionally, the texturized microcrystalline cellulose may be used as a starting material for production of paper or paper board.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: March 3, 2009
    Assignee: International Paper Company
    Inventors: Xuan Truong Nguyen, Zheng Tan
  • Process for manufacturing pulp, paper and paperboard products
    Publication number: 20070277947
    Abstract: A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 6, 2007
    Inventor: Xuan Truong Nguyen
  • Pulp and paper having increased brightness
    Publication number: 20070193707
    Abstract: The present invention relates to a method of increasing the brightness of pulp, pulp made from such methods and methods of using such pulp.
    Type: Application
    Filed: June 2, 2006
    Publication date: August 23, 2007
    Inventor: Xuan Truong Nguyen
  • Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board
    Patent number: 7037405
    Abstract: The present invention relates to the production of texturized microcrystalline cellulose from raw pulp material. This texturized microcrystalline cellulose can then be used for surface treatment of paper or paper board. Additionally, the texturized microcrystalline cellulose may be used as a starting material for production of paper or paper board.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: May 2, 2006
    Assignee: International Paper Company
    Inventors: Xuan Truong Nguyen, Zheng Tan
  • Process for preparing microcrystalline cellulose
    Patent number: 7005514
    Abstract: A process for producing microcrystalline cellulose comprised of the steps of contacting a paper grade pulp with an alkali hydrolysis agent, washing the hydrolyzed pulp and contacting the hydrolyzed pulp with an acid hydrolysis agent and washing the acid hydrolyzed product.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: February 28, 2006
    Assignee: International Paper Company
    Inventor: Xuan Truong Nguyen
  • Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board
    Publication number: 20040226671
    Abstract: The present invention relates to the production of texturized microcrystalline cellulose from raw pulp material. This texturized microcrystalline cellulose can then be used for surface treatment of paper or paper board. Additionally, the texturized microcrystalline cellulose may be used as a starting material for production of paper or paper board.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 18, 2004
    Inventors: Xuan Truong Nguyen, Zheng Tan
  • Process for preparing microcrystalline cellulose
    Publication number: 20040074615
    Abstract: A process for producing microcrystalline cellulose comprised of the steps of contacting a paper grade pulp with an alkali hydrolysis agent, washing the hydrolyzed pulp and contacting the hydrolyzed pulp with an acid hydrolysis agent and washing the acid hydrolyzed product.
    Type: Application
    Filed: October 16, 2002
    Publication date: April 22, 2004
    Inventor: Xuan Truong Nguyen