Patents by Inventor David M. Ellenbogen

David M. Ellenbogen 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 improving letter composing and writing skills
    Patent number: 5660548
    Abstract: Letter writing skills are improved through use of an associative letter writing template comprising stationery having distinct regions separable by perforations. One distinct region has an outline of a letter while another distinct region has a plurality of thematic markings. The thematic markings may include words grouped by sub-topic and/or illustrations relating to a common theme. An individual is instructed to refer to the thematic markings in composing and writing a textual body for the letter upon the outline.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: August 26, 1997
    Inventor: David M. Ellenbogen
  • Article for improving correspondence letter writing skills
    Patent number: 5551878
    Abstract: Letter writing skills are improved through use of an associative letter writing template comprising stationery having distinct regions separable by perforations. One distinct region has an outline of a letter while another distinct region has a plurality of thematic markings. The thematic markings may include words grouped by sub-topic and/or illustrations relating to a common theme.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: September 3, 1996
    Inventor: David M. Ellenbogen