Patents by Inventor Roelof Mulder

Roelof Mulder 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).

  • Patent number: 7921849
    Abstract: A condom applicator (10) is disclosed which comprises a base (12) with a split line (18) across it and two flaps (14) which are connected by flimsy hinges to the base (12). Tubs (16) protrude from the flap (14). The base (12) includes two generally parallel walls (24, 28) and a base (26) which bound a trough (22). The trough receives the hem ring of a condom. There is an opening in the base which is encircled by the inner wall (24). When the flaps (14) are folded over, areas (44) of the flaps (14) cover the trough leaving a gap (G) between the wall (24) and the area (44). The tubs (16) span across said opening. The teat of the condom lies across the opening.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: April 12, 2011
    Inventor: Roelof Mulder
  • Publication number: 20070225549
    Abstract: A condom applicator (10) is disclosed which comprises a base (12) with a split line (18) across it and two flaps (14) which are connected by flimsy hinges to the base (12). Tubs (16) protrude from the flap (14). The base (12) includes two generally parallel walls (24, 28) and a base (26) which bound a trough (22). The trough receives the hem ring of a condom. There is an opening in the base which is encircled by the inner wall (24). When the flaps (14) are folded over, areas (44) of the flaps (14) cover the trough leaving a gap (G) between the wall (24) and the area (44). The tubs (16) span across said opening. The teat of the condom lies across the opening.
    Type: Application
    Filed: May 3, 2005
    Publication date: September 27, 2007
    Inventor: Roelof Mulder
  • Patent number: 4299803
    Abstract: The invention relates to the production of alkali metal phosphate solutions free of zinc, from phosphoric acid solutions contaminated with zinc. To this end, feed solution is admixed with alkali metal hydroxide or carbonate so as to establish in the resulting suspension a pH-value within the range 8 to 14. Next, resulting suspension is reacted under pressure and with thorough agitation with H.sub.2 S or an alkali metal sulfide solution; and decontaminated alkali metal phosphate solution is separated from solid matter, the pressure being maintained.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: November 10, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Schrodter, Klaus-Peter Ehlers, Roelof Mulder