Patents by Inventor Douglas Quong

Douglas Quong 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).

  • Method of delivering active material within hydrogel microbeads
    Patent number: 6793937
    Abstract: A method of delivering active material using microbeads comprising droplets of active material entrained in a hydrophilic matrix. Compositions comprising the microbeads may be sprayable. The microbeads of the invention may be controllable by exposing the microbeads to high or low humidity or moisture.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: September 21, 2004
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas Quong
  • Pheromone immobilized in stable hydrogel microbeads
    Patent number: 6562361
    Abstract: A microbead comprising pheromone encapsulated in a coacervate shell is provided. The coacervate shell is entrained in a hydrogel microbead without chemical crosslinking. The microbeads of the present invention are capable of dehydration and rehydration to release of pheromone to the intended environment.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: May 13, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas Quong
  • Adherent microcapsules
    Publication number: 20030040552
    Abstract: Microcapsule/adhesive compositions are provided having a solids content of greater than about 40 percent. These compositions may be subsequently diluted for application to a substrate, or alternatively may be applied in undiluted form at low application rates. The compositions are economical to use, and provide surprisingly high adhesion to substrates.
    Type: Application
    Filed: July 16, 2002
    Publication date: February 27, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Douglas Quong, Kent E. Nielsen
  • Active material immobilized in stable hydrogel microbeads
    Publication number: 20020164364
    Abstract: A microbead comprising pheromone encapsulated in a coacervate shell is provided. The coacervate shell is entrained in a hydrogel microbead without chemical crosslinking. The microbeads of the present invention are capable of dehydration and rehydration to release of pheromone to the intended environment.
    Type: Application
    Filed: May 2, 2001
    Publication date: November 7, 2002
    Applicant: 3M Innovative Properties Company
    Inventor: Douglas Quong
  • METHOD OF DELIVERING ACTIVE MATERIAL WITHIN HYDROGEL MICROBEADS
    Publication number: 20020136770
    Abstract: A method of delivering active material using microbeads comprising droplets of active material entrained in a hydrophilic matrix. Compositions comprising the microbeads may be sprayable. The microbeads of the invention may be controllable by exposing the microbeads to high or low humidity or moisture.
    Type: Application
    Filed: October 22, 1999
    Publication date: September 26, 2002
    Inventor: DOUGLAS QUONG
  • Encapsulated active material immobilized in hydrogel microbeads
    Patent number: 6375968
    Abstract: A microbead comprising a hydrophilic matrix having active-filled microcapsules entrained therein. Compositions comprising the microbeads suspended in solution are useful for delivering active material. The microbeads of the invention may be controllable by exposing the microbeads to high or low humidity or moisture.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 23, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas Quong
  • Method of delivering and releasing a pheromone
    Patent number: 6365189
    Abstract: A microbead having a matrix core comprising a hydrophilic matrix and droplets of active material entrained therein, and a secondary layer adjacent to the outer surface of the matrix core. The secondary layer may be ionically complexed or hydrogen bonded to the matrix core surface. Compositions comprising the microbeads suspended in solution may be sprayable. The microbeads of the invention may be controllable by exposing the microbeads to high or low humidity or moisture.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 2, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Douglas Quong
  • HYDROGEL MICROBEADS HAVING A SECONDARY LAYER
    Publication number: 20020034550
    Abstract: A microbead having a matrix core comprising a hydrophilic matrix and droplets of active material entrained therein, and a secondary layer adjacent to the outer surface of the matrix core. The secondary layer may be ionically complexed or hydrogen bonded to the matrix core surface. Compositions comprising the microbeads suspended in solution may be sprayable. The microbeads of the invention may be controllable by exposing the microbeads to high or low humidity or moisture.
    Type: Application
    Filed: October 22, 1999
    Publication date: March 21, 2002
    Inventor: DOUGLAS QUONG