Patents by Inventor Dennis Henry Ogden

Dennis Henry Ogden 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).

  • Vehicle decelerating means
    Patent number: 3967704
    Abstract: This invention provides a safety device for quickly arresting the movement of vehicles such as aeroplanes and motor cars by forming a retarding bed of crushable material adjacent to a vehicle track. A foam is formed from an aminoplast resin composition and layed down in a bed adjacent to the vehicle track where it is cured in situ to produce a non-resilient cured foam body having a compressive strength between 15 and 50 p.s.i. and a density from 0.25 to 10 pounds per cubic foot.
    Type: Grant
    Filed: December 14, 1971
    Date of Patent: July 6, 1976
    Assignee: British Industrial Plastics Limited
    Inventor: Dennis Henry Ogden
  • Process for making improved urea/formaldehyde foams
    Patent number: 3963650
    Abstract: Improved low-density, self-sustaining urea/formaldehyde foams are prepared by separate foaming of an aqueous solution of a urea/formaldehyde resin and a foaming agent to form a first foam, and foaming an aqueous solution of a hardener and a foaming agent to form a second foam, and mixing the two foams in a liquid feed ratio of resin to hardener of at least 4:1 according to the disclosed process. The resin feed may be preheated prior to foaming. Using resins of high solids content produces foams of relatively low density.
    Type: Grant
    Filed: September 4, 1974
    Date of Patent: June 15, 1976
    Assignee: British Industrial Plastics Limited
    Inventor: Dennis Henry Ogden