Patents by Inventor Dai Q. Nguyen

Dai Q. 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).

  • Light Sensitive Organic Photoconductor
    Publication number: 20070287084
    Abstract: An electrophotoconductive element which may be irradiated with laser light having a wavelength (?) of about 350-500 nm which contains titanylphthalocyanine (TiOPC), which may be polymorphic. The electrophotoconductive element may therefore include an electroconductive support, a charge generation layer containing TiOPC, a charge transport layer and a source of laser light having a wavelength of about 350-500 nm. The charge transport layer may also exhibit light transmitting properties over the indicated laser wavelengths.
    Type: Application
    Filed: June 7, 2006
    Publication date: December 13, 2007
    Inventors: Mark Thomas Bellino, David Glenn Black, Weimei Luo, Dai Q. Nguyen, Scott Daniel Reeves
  • Generation of 1,4-dihydropyridine derivatives
    Patent number: 5120750
    Abstract: A 1,4-dihydropyridine derivative of the formula I: ##STR1## is provided in which: A is an azole moiety;R is a C.sub.1 -C.sub.4 alkyl group;X is --CH.sub.2 --, --S--, --SO-- or --SO.sub.2 --;n is 5, 6, 7 or 8; andPh is a phenyl group substituted once or twice by NO.sub.2, CF.sub.3 or Cl groups.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: June 9, 1992
    Assignee: SynPhar Laboratories, Inc.
    Inventors: Mohsen Daneshtalab, Dai Q. Nguyen, Ronald G. Micetich
  • Novel generation of heteroaryl thio, sulfoxy, or sulfonyl alkyl azoles
    Patent number: 5051515
    Abstract: There are provided compounds having the general formulae ##STR1## wherein R is a non-fused azole moiety;n is 5, 6, 7 or 8; andR.sup.1 is a substituted, fused or non-fused azole moiety.These compounds have been demonstrated as having antipicornavirus activity.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: September 24, 1991
    Assignee: SynPhar Laboratories Incorporated
    Inventors: Mohsen Daneshtalab, Ronald G. Micetich, Dai Q. Nguyen, Chan M. Ha, Hiep T. Luu
  • Novel generation of heteroaryloxyalkyl heterocycles with antipicornaviruses activities
    Patent number: 5026848
    Abstract: A heteroaryloxyalkylheterocyclic derivative of the Formula I:R--(CH.sub.2).sub.n --O--R.sup.1 Iis provided wherein:R is a non-fused azole moiety;n is 5, 6, 7 or 8; andR.sup.1 is a non-fused or fused substituted azole, azine, furyl or polycyclic hydrocarbon.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: June 25, 1991
    Assignee: Synphar Laboratories Incorporated
    Inventors: Mohsen Daneshtalab, Dai Q. Nguyen, Chan M. Ha, Hiep T. Luu, Laurence M. Tempest, Ronald G. Micetich