Patents by Inventor Maurice Fisher

Maurice Fisher 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).

  • Compound semiconductor device and method of producing the same
    Publication number: 20070158786
    Abstract: A semiconductor device comprises an Si substrate (10) and a compound layer (11) of Si1-xGex disposed on the substrate (10). X is varied from 0 to 0.2 away from the substrate (10) towards the upper surface of the compound layer (11), with the rate of change of X increasing through the layer. The increasing rate of change of X significantly improves the defectivity levels and the surf ace roughness at the surf ace of layer (11).
    Type: Application
    Filed: February 14, 2005
    Publication date: July 12, 2007
    Applicant: IQE SILICON COMPOUNDS LTD
    Inventors: Maurice Fisher, Benoit Roumiguires, Aled Morgan
  • Method of removing Al-Cr-Co coatings from nickel alloy substrates
    Patent number: 4089736
    Abstract: A method of removing a coating containing aluminium and chromium in combination with cobalt from a nickel base alloy substrate. The coated substrate is immersed in a solution containing the following constituents (by weight):Ferric Sulphate; 6-14%Hydrochloric Acid; 3.5-11%Water; RemainderWhen substantially all of the coating has been dissolved, the substrate is removed from the solution.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: May 16, 1978
    Assignee: Rolls-Royce Limited
    Inventors: Maurice Fisher, Terence Walter Maber, Colin Garry Lilly
  • Removal of aluminium rich coatings from heat resisting alloys
    Patent number: 4032359
    Abstract: A solution for removing a diffused aluminium coating from a component made of nickel or cobalt base high temperature alloy, consisting of Nitric Acid 57%, Sulphuric Acid 29% and Water 14%. The solution removes all but traces of nickel or cobalt-rich aluminides and does not attack the substrate material. If said traces have to be removed also, there is used an etching solution consisting of Ferric Chloride Solution 85%, Sulphuric Acid 10% and Hydrofluoric Acid 5%.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: June 28, 1977
    Assignee: Rolls-Royce (1971) Limited
    Inventors: Maurice Fisher, Michael Kruger, Terence Walter Maber
  • Hair dryer
    Patent number: D1026311
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: May 7, 2024
    Assignee: Dyson Technology Limited
    Inventors: Wei Phang Lim, Callum Wright, Nathan Andrew Thomas, James Robert Alexander Fisher, Gerald Eng, Graeme McPherson, Simon Brian McNamee, Edward Sebert Maurice Shelton, Stephen Benjamin Courtney, Peter David Gammack, Leanne Joyce Garner, Laura Anne Howard