Patents by Inventor Jesse Dobson

Jesse Dobson 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).

  • Hydrofluoric acid reprocessing for semiconductor standards
    Patent number: 4936955
    Abstract: A two-step distillation process provides semiconductor purity, concentrated hydrofluoric acid. Further, the distillation process, occurring under reduced pressures eliminates essentially pure water after the first distillation step. The product output of the second distillation process provides an acid of weight percent greater than 27 weight percent. The product acid is carefully diluted to the required concentrations during the dilution step.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: June 26, 1990
    Assignee: Alameda Instruments, Inc.
    Inventors: Jesse Dobson, Marshall McCormick