Patents by Inventor Kathleen B. Spear-Alfonso

Kathleen B. Spear-Alfonso 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).

  • Leveling agents for cast ferroelectric polymer films
    Patent number: 7429627
    Abstract: A substituted (meth)acrylic copolymer leveling agent is useful in producing a ferroelectric polymer film that is especially suitable for use in a data processing device. Also disclosed is a a casting composition which includes the leveling agent, a film stack, and a data processing device comprising a ferroelectric film produced using the leveling agent.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: September 30, 2008
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: Charles R. Szmanda, Kathleen B. Spear-Alfonso, Lujia Bu
  • Process for selecting solvents for forming films of ferroelectric polymers
    Patent number: 7214410
    Abstract: Disclosed herein is a process of forming a ferroelectric polymer film from a solution, wherein the solvent composition is selected so as to adjust the properties of the film. Films formed by this method have improved properties, particularly with respect to roughness and crystal domain size.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 8, 2007
    Assignee: Shipley Company, L.L.C.
    Inventors: Charles R. Szmanda, Kathleen B. Spear-Alfonso, Lujia Bu
  • Process of fractionating polymers
    Patent number: 6974858
    Abstract: Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric polymers is selected so as to adjust the properties of a ferroelectric film made from the polymers. Films formed using the fractionated vinylidene fluoride polymers have improved properties, particularly with respect to roughness and crystal domain size, and suitability for use in data processing devices.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: December 13, 2005
    Assignee: Rohm and Haas Electronic Materials LLC
    Inventors: Lujia Bu, Charles R. Szmanda, Kathleen B. Spear-Alfonso, Kathleen M. O'Connell
  • Process of fractionating polymers
    Publication number: 20040171773
    Abstract: Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric polymers is selected so as to adjust the properties of a ferroelectric film made from the polymers. Films formed using the fractionated vinylidene fluoride polymers have improved properties, particularly with respect to roughness and crystal domain size, and suitability for use in data processing devices.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 2, 2004
    Applicant: Rohm and Haas Electronic Materials, L.L.C.
    Inventors: Lujia Bu, Charles R. Szmanda, Kathleen B. Spear-Alfonso, Kathleen M. O'Connell
  • Process for selecting solvents for forming films of ferroelectric polymers
    Publication number: 20040131862
    Abstract: Disclosed herein is a process of forming a ferroelectric polymer film from a solution, wherein the solvent composition is selected so as to adjust the properties of the film. Films formed by this method have improved properties, particularly with respect to roughness and crystal domain size.
    Type: Application
    Filed: September 30, 2003
    Publication date: July 8, 2004
    Applicant: Shipley Company, L.L.C.
    Inventors: Charles R. Szmanda, Kathleen B. Spear-Alfonso, Lujia Bu