Patents by Inventor Paul Mark Harrison

Paul Mark Harrison 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).

  • Crystal substrate processing
    Patent number: 5933707
    Abstract: This disclosure relates to the fabrication of components on a single crystal substrate. A method is disclosed of overcoming the problems encountered in defining etched features on a silicon substrate. In particular, there is disclosed a method of producing a multichip module comprising a silicon substrate having surface features for the placement of components. An organic dielectric is applied to the substrate prior to the use of an etchant whereby interconnects can be defined.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: August 3, 1999
    Assignee: Northern Telecom Limited
    Inventors: Peter John Ayliffe, James Wilson Parker, Paul Mark Harrison, Robert George Peall, Martin Christopher Geear, Roger William Harcourt
  • Injection laser assembly incorporating a monitor photosensor
    Patent number: 5668823
    Abstract: An injection laser assembly mounted upon a crystal substrate [10] employing a back facet monitor is disclosed. A graded index lens [34] focuses light from the, typically, high in diversion and low intensity rays output from the back facet of the laser [30]. To allow repeatable and efficient coupling the graded index lens [34] is mounted within a groove defined in the crystal. Several configurations for mounting a photodiode sensor [P1,P2] are possible.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: September 16, 1997
    Assignee: Northern Telecom Limited
    Inventors: Paul Mark Harrison, Robert George Peall, Terry Victor Clapp