Patents by Inventor Mark W. McElfresh

Mark W. McElfresh 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: 5527493
    Abstract: An air-treating article for dispensing a volatilizable material, such as air freshener fragrance, into the atmosphere of an enclosed area, such as an automobile interior. The device includes a housing and a reservoir of the volatilizable material therein, and also includes a dual-configured, articulating attachment clip which enables attachment of the device at a high-air-flow station, such as the forced air vent grille of the automobile, or at a low-air-flow station, such as the sun visor of the vehicle. The device enables use of the consistent delivery rates of a low-density polyethylene membranes while at the same producing a higher delivery rate than normally achieved with such membranes.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: June 18, 1996
    Assignee: The Dial Corp
    Inventors: Mark W. McElfresh, Jim F. Warner, Young C. Park, Charles A. Curtiss, Martin Bogenstaerter
  • Patent number: 4960240
    Abstract: An air freshener in the form of a unitary, molded container having a first partial enclosure and a second partial enclosure integrally formed with a hinge therebetween, the partial enclosures having complementary shapes and adapted to be folded about the hinge and sealed together to form a generally flat, hermetically sealed container. The sealed container is adapted to retain an active, vaporizable substance bearing member. One portion of the sealed container is provided with an integrally formed tear-away tab adapted to be removed by a user prior to use of the air freshener.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: October 2, 1990
    Assignee: The Drackett Company
    Inventor: Mark W. McElfresh
  • Patent number: 4660231
    Abstract: This invention relates to a dispenser for discharging a controlled quantity of cleanser into the flush tank of a toilet. The dispenser consists of a container having an open neck, a shroud which fits over the neck and restricts the discharge opening in the neck and a float member slidably connected to the shroud which has means to seal the discharge opening thereby controlling the discharge of the cleanser.
    Type: Grant
    Filed: April 15, 1986
    Date of Patent: April 28, 1987
    Assignee: The Drackett Company
    Inventors: Mark W. McElfresh, Martin E. Bellersen
  • Patent number: D372768
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: August 13, 1996
    Assignee: The Dial Corp
    Inventors: Christopher J. Miller, Mark W. McElfresh, Thomas B. Aldrich, III, Guy A. Williams, Yeong C. Park