Patents by Inventor Mark S. Densen

Mark S. Densen 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: 5398868
    Abstract: A foldable knock-down storage box having a box body and cover wherein each is formed of a blank of foldable sheet material that can be readily erected to define the box body and cover wherein the cover is detachably hinged to the box body so that the box may be optimally used with either a hinged cover or a separate cover.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: March 21, 1995
    Inventor: Mark S. Densen
  • Patent number: 4953779
    Abstract: A readily foldable reversible container formed of a blank sheet material having predetermined foldlines about which the blank may be folded to define an erected container or box, and which blank is provided with indicia formed on the opposed surfaces of the blank to define a predetermined design or pattern whereby the blank can be reversely folded about the respective foldlines so that the predetermined design or pattern on the opposed surfaces of the blank can be selectively positioned either on the inside or outside of the erected container or box depending upon which direction the blank is folded.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: September 4, 1990
    Inventor: Mark S. Densen
  • Patent number: 4830080
    Abstract: A relatively inexpensive knockdown foldable screen that includes a plurality of panels having a pair of upright frame members for receiving and fixedly securing therebetween an inexpensive panel board, and a hinge construction that includes a pair of longitudinally extending gripping channels interconnected by a flexible hinge or web integrally formed therebetween, whereby the respective gripping channels received and frictionally retain the upright frame member of a panel for hingedly connecting adjacent pairs of similarly constructed panels. The top and bottom of the panel board between the upright frame members are fitted with a similarly connected frame member to complete the screen assembly.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: May 16, 1989
    Inventor: Mark S. Densen
  • Patent number: 4512477
    Abstract: A readily erectable wardrobe type cabinet formed of several blanks of readily foldable sheet material which are die cut and scored with constructional and non-constructional foldlines. A pair of such blanks define a half back panel portion and side panel, which are connected to define a body portion. Another blank defines a front panel having a hinged front closure portion, and another blank defines a bottom panel. Still another blank defines a top panel having a hinged portion to provide a top access to the assembled wardrobe. The respective blanks are each provided with scored foldlines about which the respective blanks are folded to form the constructed or erected component part.
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: April 23, 1985
    Inventor: Mark S. Densen
  • Patent number: 4463997
    Abstract: A knockdown storage unit, such as a chest of drawers, a partitioned container or knockdown furniture piece for home and office storage comprising a body formed of one or more blanks, cut and scored so each blank can be readily folded and connected into an erected storage unit body wherein each blank is provided with complimentary interlocking tabs which are integrally formed along the opposed marginal edge portion of the respective blanks. The complimentary interlocking tabs include a T-shaped tab blanked out of a marginal flap hingedly connected along a marginal portion of the blank and a slotted tab connected to the opposite edge of the blank. The arrangement is such that the respective blank is folded and interconnected by interlocking the T-shaped tab with the complimentary slotted tab in the erected position whereby the respective tabs are positively interlocked. Suitable partitions and/or drawers are supported by the side walls of the erected body for storing various articles.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: August 7, 1984
    Inventor: Mark S. Densen
  • Patent number: 4243282
    Abstract: A relatively inexpensive knock-down type cabinet for use as a wardrobe or storage cabinet comprising a pair of die cut blanks, each of which can be readily folded to define two like shaped sections arranged to complement one another in the assembled position to define a rectangularly shaped cabinet having an open front access opening which is closed by a sliding door. Suitable fastening means secure the respective folded sections in the assembled position, the arrangement being such that the cabinet can be readily assembled and secured without the need of any hand tools.
    Type: Grant
    Filed: February 22, 1979
    Date of Patent: January 6, 1981
    Assignee: Eastern Packaging and Display Co.
    Inventor: Mark S. Densen