Patents by Inventor Guoqiang Li

Guoqiang Li 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).

  • Adaptive electro-active lens with variable focal length
    Publication number: 20060164593
    Abstract: An adjustable focusing electrically controllable electroactive lens is provided. The adjustable focusing electrically controllable electroactive lens can adjust the focal length discretely or continuously. The lens can be incorporated in a variety of optical devices including spectacles.
    Type: Application
    Filed: January 18, 2006
    Publication date: July 27, 2006
    Inventors: Nasser Peyghambarian, Guoqiang Li, Pekka Ayras
  • Image correction device
    Publication number: 20050116209
    Abstract: An image correction device includes a photorefractive polymer containing a tertiary aryl amine selected from the group consisting of: wherein A is a linking atom, and wherein R1, R2, R3, R4, R5, R6, and R7 are each independently selected from the group consisting of hydrogen, C1-C10 alkyl, C1-C10 alkoxy, and C6-C10 aryl.
    Type: Application
    Filed: September 30, 2004
    Publication date: June 2, 2005
    Inventors: Michiharu Yamamoto, Nasser Peyghambarian, Guoqiang Li
  • Conversion 9-dihydro-13-acetylbaccatin III into 10-deacetylbaccatin III
    Patent number: 6812356
    Abstract: 9-dihydro-13-acetylbaccatin III, one of the chemicals obtained from Taxus canadensis is used to produce, inter alia, 10-decetylbaccatin III, a useful intermediate for the preparation of paclitaxel and analogues thereof The 9-dihydro-13-acetylbaccatin III is converted into the 10-deacetylbaccatin III by a simple three step process involving (a) replacement of the C-7 hydroxyl group of tho 9-dihydro compound with a protecting group, (b) the oxidizing of the C-7 protected compound to produce a C-9 ketone, and (c) the deprotecting of the C-9 ketone to produce 10-deacetylbaccatin III.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: November 2, 2004
    Inventors: John Findlay, Ghislain Deslongchamps, Guoqiang Li
  • Repair of damaged concrete columns or other structures using fast-curing, fiber-reinforced polymer composites
    Publication number: 20040067335
    Abstract: A composition of matter and method for inducing the rapid strengthening of damaged structures (e.g., buildings, bridges, dams, etc.) by reducing the application and curing times without the need to apply heat and pressure. The composition of matter comprises a strengthening fabric and a bonding agent which may be cured with ultraviolet light, such as sunlight, in less than about 30 min. The strengthening fabric comprises fibers chemically compatible with the bonding agent, and oriented to allow the bonding agent to quickly diffuse through the fabric.
    Type: Application
    Filed: October 7, 2002
    Publication date: April 8, 2004
    Inventors: Guoqiang Li, Su-Seng Pang
  • CONVERSION 9-DIHYDRO-13-ACETYLBACCATIN III INTO 10-DEACETYLBACCATIN III
    Publication number: 20040063976
    Abstract: 9-dihydro-13-acetylbaccatin III, one of the chemicals obtained from Taxus canadensis is used to produce, inter alia, 10-decetylbaccatin III, a useful intermediate for the preparation of paclitaxel and analogues thereof The 9-dihydro-13-acetylbaccatin III is converted into the 10-deacetylbaccatin III by a simple three step process involving (a) replacement of the C-7 hydroxyl group of the 9-dihydro compound with a protecting group, (b) the oxidizing of the C-7 protected compound to produce a C-9 keytone, and (c) the deprotecting of the C-9 keytone to produce 10-deacetylbaccatin III
    Type: Application
    Filed: September 26, 2002
    Publication date: April 1, 2004
    Inventors: John Findlay, Ghislain Deslongchamps, Guoqiang Li