Patents by Inventor Ralph Hopkins

Ralph Hopkins 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).

  • Anodic bonding of silicon carbide to glass
    Patent number: 8529724
    Abstract: MEMS and microelectronic devices and fabrication methods feature providing a first material including a glass, providing a second material having an elastic modulus greater than the elastic modulus of silicon, causing the second material to have a surface with a RMS surface roughness of greater than 0.001 ?m and less than approximately 0.15 ?m, contacting the surface of the second material to a surface of the first material, and applying a voltage between the first and second materials to cause an anodic bond to form.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: September 10, 2013
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Carissa Tudryn, Jeffrey Borenstein, Ralph Hopkins
  • Stress-based electrostatic monitoring of chemical reactions and binding
    Patent number: 7402425
    Abstract: Electrostatic capacitance measurements are used to detect chemical or biological analytes, or chemical interactions, with great sensitivity. A diaphragm is coated with a material capable of selectively interacting with an analyte of interest, and interaction of the analyte with the coating exerts stresses tangential to the diaphragm's surface. These stresses cause diaphragm displacements that are sensed as varying capacitance.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: July 22, 2008
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Marc S. Weinberg, Jeffrey Borenstein, Christopher E. Dubé, Ralph Hopkins, Edwin Carlen
  • Stress-based electrostatic monitoring of chemical reactions and binding
    Publication number: 20050196877
    Abstract: Electrostatic capacitance measurements are used to detect chemical or biological analytes, or chemical interactions, with great sensitivity. A diaphragm is coated with a material capable of selectively interacting with an analyte of interest, and interaction of the analyte with the coating exerts stresses tangential to the diaphragm's surface. These stresses cause diaphragm displacements that are sensed as varying capacitance.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 8, 2005
    Applicant: The Charles Stark Draper Laboratory, Inc.
    Inventors: Marc Weinberg, Jeffrey Borenstein, Christopher Dube, Ralph Hopkins, Edwin Carlen
  • Anodic Bonding of silicon carbide to glass
    Publication number: 20050072189
    Abstract: MEMS and microelectronic devices and fabrication methods feature providing a first material including a glass, providing a second material having an elastic modulus greater than the elastic modulus of silicon, causing the second material to have a surface with a RMS surface roughness of greater than 0.001 ?m and less than approximately 0.15 ?m, contacting the surface of the second material to a surface of the first material, and applying a voltage between the first and second materials to cause an anodic bond to form.
    Type: Application
    Filed: October 1, 2003
    Publication date: April 7, 2005
    Applicant: Charles Stark Draper Laboratory, Inc.
    Inventors: Carissa Tudryn, Jeffrey Borenstein, Ralph Hopkins