Patents by Inventor Zidu Ma

Zidu Ma 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: 20090152199
    Abstract: A membrane module comprising an outer casing having an interior region, a plurality of hollow fiber membranes extending through at least a portion of the interior region, and having exterior surfaces and inner hollow regions, where the inner hollow regions are configured to provide flow paths for a distillate fluid. The membrane module further comprises an opening extending through the outer casing for providing a feed solution to the interior region adjacent the exterior surfaces of the plurality of hollow fiber membranes, where the feed solution provided to the opening has an elevated temperature that is greater than an atmospheric-pressure boiling temperature of the feed solution, and an elevated pressure at which an effective boiling temperature of the feed solution is greater than the elevated temperature.
    Type: Application
    Filed: December 18, 2007
    Publication date: June 18, 2009
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Zidu Ma, James R. Irish, Xiaohong Liao, Haralambos Cordatos, Xiaomei Yu
  • Publication number: 20090152184
    Abstract: A membrane module comprising an outer casing having an interior region, a seal disposed within the outer case, thereby dividing the interior region into a first chamber and a second chamber, and a plurality of hollow fiber membranes extending through the first chamber and the second chamber, where at least a portion of the plurality of hollow fiber membranes have first segments located within the first chamber and second segments located within the second chamber, the first segments being configured to allow vapor transmission therethrough, and the second segments being configured to substantially prevent vapor transmission therethrough, and further configured to allow transmission of thermal energy therethrough.
    Type: Application
    Filed: December 18, 2007
    Publication date: June 18, 2009
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Xiaohong Liao, Zidu Ma, James R. Irish
  • Patent number: 7435283
    Abstract: A fuel stabilization system includes a first deoxygenator and a second deoxygenator both for removing dissolved oxygen from a hydrocarbon fuel. The first and second deoxygenators are arranged in parallel or series to sequentially remove a portion of dissolved oxygen from the hydrocarbon fuel. The arrangement of several deoxygenators for a single fuel stream improves removal of dissolved oxygen and provides for scalability of the fuel system to meet application specific demands. The arrangement also provides for the preservation of partial system functionality in the event of the failure of one of the deoxygenator modules.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: October 14, 2008
    Assignee: United Technologies Corporation
    Inventors: Thomas Gregory Tillman, Alexander G. Chen, Catalin G. Fotache, Louis J. Spadaccini, Foster Lamm, Zidu Ma, Lou Chiappetta, Charles C. Coffin, James A. Wilkinson, Brian Welch
  • Publication number: 20070225155
    Abstract: The athermal sorbent bed regeneration system of the present invention includes a main fuel supply, at least one sorbent bed, a source of microwave energy, and a secondary fuel supply. The main fuel supply has a first concentration of an impurity and the secondary fuel supply has a second concentration of the impurity that is less than the first concentration of the impurity. The sorbent bed adsorbs the impurity. The microwave energy source regenerates the sorbent bed for reuse.
    Type: Application
    Filed: March 23, 2006
    Publication date: September 27, 2007
    Applicant: United Technologies Corporation
    Inventors: Thomas Vanderspurt, Sarah Arsenault, Theresa Hugener-Campbell, Sean Emerson, Zidu Ma, James MacLeod, Susanne Opalka
  • Publication number: 20070157922
    Abstract: An integrated solar cell system applies energy created by a solar cell module. The integration system includes a solar cell module, a low-grade heat recovery means, and a process system. The low-grade heat recovery means recovers waste heat from the solar cell module and connects the solar cell module to the process system. The process system is powered at least partially by thermal energy derived from waste heat generated by the solar cell module.
    Type: Application
    Filed: December 29, 2005
    Publication date: July 12, 2007
    Inventors: Rakesh Radhakrishnan, Zidu Ma, Craig Walker, Yu Chen, Yuanguang Li, Yuhui Kuang
  • Publication number: 20060263277
    Abstract: A fuel stabilization system includes a first deoxygenator and a second deoxygenator both for removing dissolved oxygen from a hydrocarbon fuel. The first and second deoxygenators are arranged in parallel or series to sequentially remove a portion of dissolved oxygen from the hydrocarbon fuel. The arrangement of several deoxygenators for a single fuel stream improves removal of dissolved oxygen and provides for scalability of the fuel system to meet application specific demands. The arrangement also provides for the preservation of partial system functionality in the event of the failure of one of the deoxygenator modules.
    Type: Application
    Filed: May 18, 2005
    Publication date: November 23, 2006
    Inventors: Thomas Tillman, Alexander Chen, Catalin Fotache, Louis Spadaccini, Foster Lamm, Zidu Ma, Lou Chiappetta, Charles Coffin, James Wilkinson, Brian Welch
  • Publication number: 20050184006
    Abstract: A non-porous membrane suitable for use in removing dissolved oxygen in a fuel deoxygenator device in an aircraft is produced by solvent casting. A first membrane layer is deposited on a substrate. A second membrane layer is deposited on top of the first membrane layer. Subsequent membrane layers may be deposited on top of the second membrane layer as desired. The resulting non-porous membrane allows little or no leaking of fuel across the membrane.
    Type: Application
    Filed: February 25, 2004
    Publication date: August 25, 2005
    Inventors: Zidu Ma, Louis Spadaccini, He Huang, Harry Cordatos, Foster Lamm