Patents by Inventor Guoqing Guan

Guoqing Guan 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).

  • Zeolite nano-crystal suspension, zeolite nano-crystal production method, zeolite nano-crystal suspension production method, and zeolite thin film
    Patent number: 7384622
    Abstract: A zeolite suspension contains MEL-type zeolite nanocrystals as a principal component. A method for the production of MEL-type zeolite nanocrystals includes the steps of aging a synthesized solution comprising TEOS, TBAOH, water and alcohol and subjecting the aged solution to hydrothermal crystallization treatment at a predetermined temperature. A method for the production of a zeolite suspension includes the steps of aging a synthesized solution comprising TEOS, TBAOH, water and alcohol, subjecting the aged solution to hydrothermal crystallization treatment to produce MEL-type zeolite nanocrystals and mixing a composition having a surfactant dissolved in at least one organic solvent or a mixed solvent of alcohol-based organic solvents, amide-based organic solvents and ketone-based organic solvents with a zeolite nano-crystal suspension containing the MEL-type zeolite nanocrystals to produce a zeolite suspension.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: June 10, 2008
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Nobuhiro Hata, Guoqing Guan, Takenobu Yoshino, Syozo Takada
  • Zeolite nano-crystal suspension, zeolite nano-crystal production method, zeolite nano-crystal suspension production method, and zeolite thin film
    Publication number: 20060063662
    Abstract: A zeolite suspension contains MEL-type zeolite nanocrystals as a principal component. A method for the production of MEL-type zeolite nanocrystals includes the steps of aging a synthesized solution comprising TEOS, TBAOH, water and alcohol and subjecting the aged solution to hydrothermal crystallization treatment at a predetermined temperature. A method for the production of a zeolite suspension includes the steps of aging a synthesized solution comprising TEOS, TBAOH, water and alcohol, subjecting the aged solution to hydrothermal crystallization treatment to produce MEL-type zeolite nanocrystals and mixing a composition having a surfactant dissolved in at least one organic solvent or a mixed solvent of alcohol-based organic solvents, amide-based organic solvents and ketone-based organic solvents with a zeolite nano-crystal suspension containing the MEL-type zeolite nanocrystals to produce a zeolite suspension.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 23, 2006
    Applicant: Nat. Inst. of Adv. Industrial Sci. and Tech.
    Inventors: Nobuhiro Hata, Guoqing Guan, Takenobu Yoshino, Syozo Takada