Patents by Inventor Yubao Wang

Yubao Wang 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).

  • Publication number: 20140225252
    Abstract: A reversal lithography approach is disclosed in which dark-field features are created on microelectronic substrates using bright-field lithography processes and a pattern reversal method. A wafer stack having a patterned imaging layer is provided that has a plurality of features formed thereon. A pattern reversal composition is applied to the patterned imaging layer overcoating the features, followed by wet etch-back of partially cured portions of the composition to expose the tops of the features. The imaging layer is then removed resulting in reversal of the pattern into the pattern reversal composition.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Applicant: BREWER SCIENCE INC.
    Inventors: Qin Lin, Daniel M. Sullivan, Tony D. Flaim, Yubao Wang, Jamie Lea Storie
  • Patent number: 8647809
    Abstract: Metal-oxide films for lithographic applications are provided. The films are formed from compositions comprising metal-oxide precursor compounds including metals and metalloids other than silicon. These films are easily produced and can be modified with a variety of ligands, including alkoxides, phenoxides, carboxylates, beta-diketones, and beta-ketoesters.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: February 11, 2014
    Assignee: Brewer Science Inc.
    Inventors: Daniel M. Sullivan, Charles J. Neef, Yubao Wang, Tantiboro Ouattara
  • Publication number: 20130286890
    Abstract: A method and system for implementing a pseudo wire control word capability negotiation are disclosed in the present document. The method includes: when modifying a local control word value, a Provider Edge (PE) acquiring a control word value configured or negotiated locally by an opposite terminal provider edge by sending label request message and receiving label mapping message, and according to the local control word value and the acquired control word value, the provider edge determining a control word value negotiated with respect to a pseudo wire. In the present document, the problem of inconsistency between the control word configurations and the expected negotiation results existing in certain specific scenarios is solved, which enhances the negotiation performance. The technical scheme of the present document makes slight modifications on the existing protocol, and it is applicable to a single segment pseudo wire scenario and a multiple segment pseudo wire scenario.
    Type: Application
    Filed: August 16, 2011
    Publication date: October 31, 2013
    Inventors: Ran Chen, Lizhong Jin, Yubao Wang, Chun Zhu
  • Publication number: 20130273330
    Abstract: Compositions for directed self-assembly patterning techniques are provided which avoid the need for separate anti-reflective coatings and brush neutral layers in the process. Methods for directed self-assembly are also provided in which a self-assembling material, such as a directed self-assembly block copolymer, can be applied directly to the silicon hardmask neutral layer and then self-assembled to form the desired pattern. Directed self-assembly patterned structures are also disclosed herein.
    Type: Application
    Filed: April 15, 2013
    Publication date: October 17, 2013
    Applicant: Brewer Science Inc.
    Inventors: Yubao Wang, Mary Ann Hockey, Douglas J. Guerrero, Vandana Krishnamurthy, Robert C. Cox
  • Publication number: 20130011630
    Abstract: Metal-oxide films for lithographic applications are provided. The films are formed from compositions comprising metal-oxide precursor compounds including metals and metalloids other than silicon. These films are easily produced and can be modified with a variety of ligands, including alkoxides, phenoxides, carboxylates, beta-diketones, and beta-ketoesters.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 10, 2013
    Applicant: BREWER SCIENCE INC.
    Inventors: Daniel M. Sullivan, Charles J. Neef, Yubao Wang, Tantiboro Ouattara
  • Publication number: 20120264056
    Abstract: Radiation-sensitive sol-gel compositions are provided, along with methods of forming microelectronic structures and the structures thus formed. The compositions comprise a sol-gel compound and a base generator dispersed or dissolved in a solvent system. The sol-gel compound comprises recurring monomeric units comprising silicon with crosslinkable moieties bonded to the silicon. Upon exposure to radiation, the base generator generates a strong base, which crosslinks the sol-gel compound in the compositions to yield a crosslinked layer that is insoluble in developers or solvents. The unexposed portions of the layer can be removed to yield a patterned sol-gel layer. The invention can be used to form patterns from sol-gel materials comprising features having feature sizes of less than about 1 ?m.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 18, 2012
    Applicant: BREWER SCIENCE INC.
    Inventors: Qin Lin, Yubao Wang, Tony D. Flaim
  • Publication number: 20120164390
    Abstract: Methods of forming microelectronic structure are provided. The methods comprise the formation of T-shaped structures using a controlled undercutting process, and the deposition of a selectively etchable composition into the undercut areas of the T-shaped structures. The T-shaped structures are subsequently removed to yield extremely small undercut-formed features that conform to the width and optionally the height of the undercut areas of the T-shaped structures. These methods can be combined with other conventional patterning methods to create structures having extremely small feature sizes regardless of the wavelength of light used for patterning.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: BREWER SCIENCE INC.
    Inventors: Carlton Ashley Washburn, James E. Lamb, III, Nickolas L. Brakensiek, Qin Lin, Yubao Wang, Vandana Krishnamurthy, Claudia Scott
  • Patent number: 7803458
    Abstract: Novel compositions and methods of using those compositions to form metal oxide films or coatings are provided. The compositions comprise an organometallic oligomer and an organic polymer or oligomer dispersed or dissolved in a solvent system. The compositions have long shelf lives and can be prepared by easy and reliable preparation procedures. The compositions can be cured to cause conversion of the composition into films of metal oxide interdispersed with organic polymer or oligomer. The cured films have high refractive indices, high optical clarities, and good mechanical stabilities at film thicknesses of greater than about 1 ?m.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: September 28, 2010
    Assignee: Brewer Science Inc.
    Inventors: Tony D. Flaim, Yubao Wang, Ramil-Marcelo L. Mercado
  • Publication number: 20060030648
    Abstract: Novel compositions and methods of using those compositions to form metal oxide films or coatings are provided. The compositions comprise an organometallic oligomer and an organic polymer or oligomer dispersed or dissolved in a solvent system. The compositions have long shelf lives and can be prepared by easy and reliable preparation procedures. The compositions can be cured to cause conversion of the composition into films of metal oxide interdispersed with organic polymer or oligomer. The cured films have high refractive indices, high optical clarities, and good mechanical stabilities at film thicknesses of greater than about 1 ?m.
    Type: Application
    Filed: October 7, 2005
    Publication date: February 9, 2006
    Inventors: Tony Flaim, Yubao Wang, Ramil-Marcelo Mercado
  • Publication number: 20040171743
    Abstract: Novel compositions and methods of using those compositions to form metal oxide films or coatings are provided. The compositions comprise an organometallic oligomer and an organic polymer or oligomer dispersed or dissolved in a solvent system. The compositions have long shelf lives and can be prepared by easy and reliable preparation procedures. The compositions can be cured to cause conversion of the composition into films of metal oxide interdispersed with organic polymer or oligomer. The cured films have high refractive indices, high optical clarities, and good mechanical stabilities at film thicknesses of greater than about 1 &mgr;m.
    Type: Application
    Filed: January 15, 2004
    Publication date: September 2, 2004
    Applicant: Terry Brewer, Ph.D.
    Inventors: Tony D. Flaim, Yubao Wang, Ramil-Marcelo L. Mercado
  • Patent number: 5976796
    Abstract: A fusion gene is provided comprising the cDNA of Renilla luciferase and the cDNA of the "humanized" Aequorea green fluorescent protein. The fusion gene was used to produce a novel protein, the "Renilla-GFP fusion protein," which displayed both the luciferase activity of Renilla luciferase, and the green fluorescence of GFP. The Renilla-GFP fusion gene is useful as a double marker for monitoring gene expression quantitatively in UV light and by enzyme activity.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: November 2, 1999
    Assignee: Loma Linda University
    Inventors: Aladar A. Szalay, Gefu Wang, Yubao Wang