Patents by Inventor Gerrit Nitters

Gerrit Nitters 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).

  • Inhibiting scale deposition in oilfield tubulars
    Publication number: 20040195187
    Abstract: A method for preventing scale deposition in a fluid that includes water and ions that can produce scale precipitation and deposition flowing through a well and/or other oilfield tubular comprising arranging a liquid whistle for producing acoustic waves in the fluid in the tubular, and allowing at least part of the fluid that flows through the tubular to pass through the liquid whistle to generate acoustic waves.
    Type: Application
    Filed: January 8, 2004
    Publication date: October 7, 2004
    Inventors: Jeroen Groenenboom, Sau-Wai Wong, Gerrit Nitters
  • Slow-release air freshener polymer-blend composition
    Patent number: 3994439
    Abstract: Slow-release air freshener compositions having favorable depletion characteristics comprise an odorant (perfume) intimately dispersed in a polymeric mixture comprising 10-50% by weight of a certain block copolymer, 2-10% by weight polystyrene and 30-50% by weight of ethylene vinyl acetate copolymer.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: November 30, 1976
    Assignee: Shell Oil Company
    Inventors: Adriaan W. Van Breen, Gerrit Nitters