Patents by Inventor Stephen Crisp

Stephen Crisp 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).

  • APPARATUS AND METHOD FOR WIRELESSLY TRANSMITTING DATA FROM A VEHICLE LATCH
    Publication number: 20150115617
    Abstract: A latch for a vehicle is disclosed herein. The latch including: a housing; a switch located within the housing, wherein the wireless switch is configured to only wirelessly transfer data from the housing, wherein the data corresponds to an operational state of the wireless switch, wherein the power required to wirelessly transfer the data from housing is generated solely by manipulation of an actuation member of the wireless switch; and a component moveably mounted within the housing for movement between at least a first position and a second position, wherein movement of the component in the housing manipulates the actuation member of the wireless switch and thus changes the state of the wireless switch.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Inventors: Andrew Powell, Sean D. Williams, Stephen Crisp, Steven Wilkes, Martin Harvey
  • Dental cement composition comprising poly(carboxylic acid) and chelating agent
    Patent number: 4569954
    Abstract: A poly(carboxylate) cement pack comprising a water soluble poly(carboxylic acid) having a relative viscosity of from 1.05 to 2.00, a chelating agent and a cement powder which will react with the poly(carboxylic acid) in the presence of the chelating agent and water to give a plastic mass which rapidly hardens to form a poly(carboxylate) cement.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: February 11, 1986
    Assignee: National Research Development Corporation
    Inventors: Alan D. Wilson, Stephen Crisp
  • Hardenable compositions
    Patent number: 4337186
    Abstract: Compositions which are hardenable in the presence of water to form a poly(carboxylate) cement contain a metal salt which accelerates the setting of the composition.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: June 29, 1982
    Assignee: National Research Development Corporation
    Inventors: Stephen Crisp, Alan D. Wilson
  • Cements
    Patent number: 4222920
    Abstract: A cement-forming liquid suitable for use as a component of a poly(carboxylate) cement comprises an aqueous solution of a copolymer of acrylic acid, the copolymer having an average molecular weight of less than 20,000, and the solution having a viscosity of less than 50 poise.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: September 16, 1980
    Assignee: National Research Development Corporation
    Inventors: Stephen Crisp, Alan D. Wilson
  • Dental cement containing poly(carboxylic acid), chelating agent and glass cement powder
    Patent number: 4209434
    Abstract: A poly(carboxylate) cement pack comprising a water soluble poly(carboxylic acid) having a relative viscosity of from 1.05 to 2.00, a chelating agent and a cement powder which will react with the poly(carboxylic acid) in the presence of the chelating agent and water to give a plastic mass which rapidly hardens to form a poly(carboxylate) cement.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: June 24, 1980
    Assignee: National Research Development Corporation
    Inventors: Alan D. Wilson, Stephen Crisp
  • Cements
    Patent number: 4143018
    Abstract: A poly(carboxylate) cement pack comprises as one component a water soluble poly(carboxylic acid) or a precursor thereof, and as another component an aluminosilicate glass, the ratio of acidic to basic oxides in the glass being selected such that the glass will react with a poly(carboxylic acid) in the presence of water to form a poly(carboxylate) cement.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: March 6, 1979
    Assignee: National Research Development Corporation
    Inventors: Stephen Crisp, Alan D. Wilson
  • Cements comprising acrylic acid/itaconic acid copolymer and fluoroaluminosilicate glass powder
    Patent number: 4016124
    Abstract: A cement-forming liquid suitable for use as a component of a poly(carboxylate) cement comprises an aqueous solution of a copolymer of acrylic acid, the copolymer having an average molecular weight of less than 20,000, and the solution having a viscosity of less than 50 poise.
    Type: Grant
    Filed: August 15, 1974
    Date of Patent: April 5, 1977
    Assignee: National Research Development Corporation
    Inventors: Stephen Crisp, Alan Donald Wilson