Patents by Inventor Junkang J. Liu

Junkang J. Liu 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).

  • Patent number: 7682771
    Abstract: In one aspect, the invention provides a fluorochemical composition comprising a mixture of: a fluorochemical selected from the formula: wherein RF is a fluorinated group having the formula: Rf—W—, wherein Rf is a perfluoroalkyl or perfluoropolyether group and W is a divalent linking group; PI is a monovalent pendant organic moiety comprising benzophenone, substituted benzophenone, acetophenone, or substituted acetophenone groups; R is H, CH3, or F; Rh is lower alkyl selected from the group consisting of linear or branched alkyl groups having from 1 to about 8 carbon atoms, cycloalkyl-containing alkyl groups having from 4 to about 8 carbon atoms, and cycloalkyl groups having from 3 to about 8 carbon atoms, all optionally containing catenated O or N atoms; m is at least 2; n is at least 1; q is zero or greater; and a hydrofluoroether.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: March 23, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Junkang J. Liu, Mark J. Pellerite, George G. I. Moore, Michael A. Semonick
  • Publication number: 20090251917
    Abstract: The present invention is generally directed to illumination devices, and particularly directed to illumination devices which utilize thin light sources or edge-lit sources in combination with a light turning plate. The illumination devices may be used in a broad range of applications, and are particularly suited for the interior lighting of vehicles.
    Type: Application
    Filed: August 1, 2007
    Publication date: October 8, 2009
    Inventors: Mark R. Wollner, Jacquelyn A. Wedell, Junkang J. Liu, Rebecca A. Shipman, Michael A. Meis, Gordon D. Henson, Dean J. Stych, Nicholas A. Lee
  • Patent number: 7351470
    Abstract: An antireflection film and method of making same includes a substrate having a first surface and a second surface, an inorganic layer deposited on the first surface of the substrate, and an optically active polymer layer formed by curing a curable composition in situ on the inorganic layer, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 nm to 700 nm and a thickness of from about 20 nm to about 200 nm, and an adhesive layer deposited on the second surface of the substrate.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: April 1, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Erica J. Draheim, Bettie C. Fong, Bruce D. Kluge, Junkang J. Liu, Pradnya V. Nagarkar, William K. Smyth
  • Patent number: 6841190
    Abstract: An antisoiling hardcoated film comprising a substantially transparent substrate, a hardcoat layer comprising inorganic oxide particles dispersed in a binder matrix, and an antisoiling layer comprising a perfluoropolyether. The antisoiling layer can be very thin, thus reducing the cost of the perfluoropolyether. The film has very good scratch, smudge and glare resistance and very good interlayer adhesion and durability. The film can be in the form of a single flexible substrate or a stack of such substrates. The film or stack can be sized to fit the display screen of an electronic display device such as a personal digital assistant or cell phone.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: January 11, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Junkang J. Liu, Bettie C. Fong, Bruce D. Kluge
  • Publication number: 20040081764
    Abstract: An antisoiling hardcoated film comprising a substantially transparent substrate, a hardcoat layer comprising inorganic oxide particles dispersed in a binder matrix, and an antisoiling layer comprising a perfluoropolyether. The antisoiling layer can be very thin, thus reducing the cost of the perfluoropolyether. The film has very good scratch, smudge and glare resistance and very good interlayer adhesion and durability. The film can be in the form of a single flexible substrate or a stack of such substrates. The film or stack can be sized to fit the display screen of an electronic display device such as a personal digital assistant or cell phone.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 29, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Junkang J. Liu, Bettie C. Fong, Bruce D. Kluge
  • Patent number: 6660388
    Abstract: An antisoiling hardcoated film comprising a substantially transparent substrate, a hardcoat layer comprising inorganic oxide particles dispersed in a binder matrix, and an antisoiling layer comprising a perfluoropolyether. The antisoiling layer can be very thin, thus reducing the cost of the perfluoropolyether. The film has very good scratch, smudge and glare resistance and very good interlayer adhesion and durability. The film can be in the form of a single flexible substrate or a stack of such substrates. The film or stack can be sized to fit the display screen of an electronic display device such as a personal digital assistant or cell phone.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: December 9, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Junkang J. Liu, Bettie C. Fong, Bruce D. Kluge
  • Patent number: 6660389
    Abstract: Information display protectors for display devices having an information display area, comprising a stack of flexible substantially transparent sheets, the sheets having on one side thereof an adhesive layer and having on the other side thereof a hardcoat layer comprising inorganic oxide particles dispersed in a binder matrix and a low surface energy fluorinated compound, the stack being cut so that the sheets will fit the information display area. The low surface energy fluorinated compound can be part of the hardcoat layer or can be a separate layer atop the hardcoat layer. The protectors have very good scratch, smudge and glare resistance. The stack of protectors can be stored, for example, on a personal digital assistant or its cover or case.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: December 9, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Junkang J. Liu, Bettie C. Fong, Bruce D. Kluge
  • Publication number: 20030044559
    Abstract: The invention is an article securable to an optical disc. A layer of repositionable adhesive is disposed on a backing wherein the repositionable adhesive has a higher adhesion level to the read/write surface of the optical disc than to that of a non-target surface. The backing is secured to an optical disc with the repositionable adhesive disposed against the read/write surface of an optical disc. To remove the article, the backing is peeled away from the optical disc. The layer of repositionable adhesive has a higher level of adherence to the backing than to the optical disc.
    Type: Application
    Filed: August 8, 2002
    Publication date: March 6, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Junkang J. Liu, Bruce D. Kluge, Timothy J. O'Leary
  • Publication number: 20030012936
    Abstract: An antireflection film and method of making same includes a substrate having a first surface and a second surface, an inorganic layer deposited on the first surface of the substrate, and an optically active polymer layer formed by curing a curable composition in situ on the inorganic layer, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 nm to 700 nm and a thickness of from about 20 nm to about 200 nm, and an adhesive layer deposited on the second surface of the substrate.
    Type: Application
    Filed: April 29, 2002
    Publication date: January 16, 2003
    Inventors: Erica J. Draheim, Bettie C. Fong, Bruce D. Kluge, Junkang J. Liu, Pradnya V. Nagarkar, William K. Smyth
  • Publication number: 20020136940
    Abstract: The present invention provides a method of making 3-layer membrane electrode assemblies (MEAs) involving a direct transfer of the catalyst to the polymer electrolyte membrane as a decal in protonated form (acid form) at low temperature, particularly by use of a microstructured transfer medium or a flame-treated silicone-containing transfer medium.
    Type: Application
    Filed: January 29, 2002
    Publication date: September 26, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Shane S. Mao, Pinar E. Serim, Junkang J. Liu, Edward M. Fischer, David R. Mekala
  • Publication number: 20020122925
    Abstract: Information display protectors for display devices having an information display area, comprising a stack of flexible substantially transparent sheets, the sheets having on one side thereof an adhesive layer and having on the other side thereof a hardcoat layer comprising inorganic oxide particles dispersed in a binder matrix and a low surface energy fluorinated compound, the stack being cut so that the sheets will fit the information display area. The low surface energy fluorinated compound can be part of the hardcoat layer or can be a separate layer atop the hardcoat layer. The protectors have very good scratch, smudge and glare resistance. The stack of protectors can be stored, for example, on a personal digital assistant or its cover or case.
    Type: Application
    Filed: August 7, 2001
    Publication date: September 5, 2002
    Inventors: Junkang J. Liu, Bettie C. Fong, Bruce D. Kluge
  • Publication number: 20020114934
    Abstract: An antisoiling hardcoated film comprising a substantially transparent substrate, a hardcoat layer comprising inorganic oxide particles dispersed in a binder matrix, and an antisoiling layer comprising a perfluoropolyether. The antisoiling layer can be very thin, thus reducing the cost of the perfluoropolyether. The film has very good scratch, smudge and glare resistance and very good interlayer adhesion and durability. The film can be in the form of a single flexible substrate or a stack of such substrates. The film or stack can be sized to fit the display screen of an electronic display device such as a personal digital assistant or cell phone.
    Type: Application
    Filed: August 7, 2001
    Publication date: August 22, 2002
    Inventors: Junkang J. Liu, Bettie C. Fong, Bruce D. Kluge