Patents by Inventor David B. Cruickshank

David B. Cruickshank 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).

  • Co-firing of magnetic and dielectric materials for fabricating composite assemblies for circulators and isolators
    Patent number: 7687014
    Abstract: A method for making a composite magnetic-dielectric disc assembly includes forming a dielectric ceramic cylinder, forming a magnetic ceramic rod, assembling the magnetic ceramic rod coaxially inside the dielectric ceramic cylinder to form a rod-and-cylinder assembly, kilning (firing) the rod-and-cylinder assembly, slicing the rod-and-cylinder assembly to form a plurality of composite magnetic-dielectric disc-shaped assemblies. The magnetic-dielectric disc assemblies can be used in manufacturing, for example, circulators, isolators or similar electronic components. Accordingly, the method for making the disc assemblies can be included as part of a method for making such electronic components.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 30, 2010
    Assignee: Skyworks Solutions, Inc.
    Inventors: Jingmin Zheng, David B. Cruickshank, David M. Firor
  • CO-FIRING OF MAGNETIC AND DIELECTRIC MATERIALS FOR FABRICATING COMPOSITE ASSEMBLIES FOR CIRCULATORS AND ISOLATORS
    Publication number: 20090243163
    Abstract: A method for making a composite magnetic-dielectric disc assembly includes forming a dielectric ceramic cylinder, forming a magnetic ceramic rod, assembling the magnetic ceramic rod coaxially inside the dielectric ceramic cylinder to form a rod-and-cylinder assembly, kilning (firing) the rod-and-cylinder assembly, slicing the rod-and-cylinder assembly to form a plurality of composite magnetic-dielectric disc-shaped assemblies. The magnetic-dielectric disc assemblies can be used in manufacturing, for example, circulators, isolators or similar electronic components. Accordingly, the method for making the disc assemblies can be included as part of a method for making such electronic components.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 1, 2009
    Applicant: SKYWORKS SOLUTIONS, INC.
    Inventors: Jingmin Zheng, David B. Cruickshank, David M. Firor
  • Dielectric ceramic composition having wide sintering temperature range and reduced exaggerated grain growth
    Patent number: 7378363
    Abstract: According to one exemplary embodiment, a dielectric ceramic composition includes a main component group, where the main component group is represented by MgxCayZnzTiO2+x+y+z, where the sum of x, y, and z is less than or equal to 1.0 such that the dielectric ceramic composition has a wider sintering temperature range and reduced exaggerated grain growth. According to one embodiment, x can be greater than 0.0 and less than 1.0, y can be greater than 0.0 and less than 1.0, and z can be greater than 0.0 and less than 1.0. The dielectric ceramic composition can further include between 0.0 and 50.0 percent by weight of aluminum oxide. The dielectric ceramic composition can further include copper oxide. The dielectric ceramic composition can further include boron oxide.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: May 27, 2008
    Assignee: Skyworks Solutions, Inc.
    Inventors: Jingmin Zheng, David B. Cruickshank, David J. Cronin, David A. Tolino