Patents by Inventor Frank Hoff

Frank Hoff 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).

  • Method for producing a cylinder of quartz glass using a holding device and appropriate holding device for performing the method
    Patent number: 8484997
    Abstract: A known method for producing a cylinder of quartz glass comprises a method step in which a porous SiO2 body comprising a central inner bore, a lower end and an upper end is sintered in a sintering furnace zone by zone, starting from the upper end, to obtain the quartz glass cylinder, a holding device being used by means of which the SiO2 body is held standing in vertical orientation during a first sintering phase and suspended in a second sintering phase.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: July 16, 2013
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Frank Hoff, Michael Muschler, Udo Peper, Sven Schmidt, Steffen Zwarg, Hans-Georg Fritsche
  • METHOD FOR PRODUCING A CYLINDER OF QUARTZ GLASS USING A HOLDING DEVICE AND APPROPRIATE HOLDING DEVICE FOR PERFORMING THE METHOD
    Publication number: 20100126217
    Abstract: A known method for producing a cylinder of quartz glass comprises a method step in which a porous SiO2 body comprising a central inner bore, a lower end and an upper end is sintered in a sintering furnace zone by zone, starting from the upper end, to obtain the quartz glass cylinder, a holding device being used by means of which the SiO2 body is held standing in vertical orientation during a first sintering phase and suspended in a second sintering phase.
    Type: Application
    Filed: June 5, 2008
    Publication date: May 27, 2010
    Applicant: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Frank Hoff, Michael Muschler, Udo Peper, Sven Schmidt, Steffen Zwarg, Hans-Georg Fritsche
  • Two-part bottle
    Patent number: D439511
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: March 27, 2001
    Assignee: Griffin L.L.C.
    Inventors: Larry Gene Beaver, Edwin Frank Hoff, Jr., Allan Steven Las, Terrie Jo Pellitteri, Mark T. MacLean-Blevins, Donald Patrick Reilly
  • Sprayer system
    Patent number: D432208
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: October 17, 2000
    Assignee: Griffin LLC
    Inventors: Larry Gene Beaver, Edwin Frank Hoff, Jr., Allan Steven Las, Edward Francis Nichenko, Terrie Jo Pelllitteri, Mark T. MacLean-Blevins, Donald Patrick Reilly, Craig Stephen Ketcham