Patents by Inventor Harland H. Young

Harland H. Young 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 of converting waste dross to fertilizer
    Patent number: 4475940
    Abstract: A substantially dry, granulated, relatively dust free, and commercially valuable fertilizer product is obtained by treating the waste dross product from resmelting and purification of scrap aluminum with phosphoric acid.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: October 9, 1984
    Assignee: Michigan Standard Alloys
    Inventor: Harland H. Young
  • Treatment of vegetable tanning wastes
    Patent number: 4137163
    Abstract: Highly colored tannin bodies and other suspended solids are separated from highly alkaline vegetable tannery waste effluent by scrubbing hot combustion gas with the effluent, introducing polyacrylamide flocculant into the effluent either immediately before scrubbing or during scrubbing, and separating floatable foam and settleable solids from the effluent after scrubbing. The effluent may be treated with a soluble salt of a trivalent metal before scrubbing to act as a primary flocculant.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: January 30, 1979
    Assignee: Eberle Tanning Company
    Inventor: Harland H. Young
  • Continuous method for reclaiming chromium hydroxide from spent chrome tanning liquors and re-use thereof in subsequent tanning
    Patent number: 3950131
    Abstract: A continuous method is provided for reclaiming chromium compounds which heretofore were discharged as industrial waste from chrome liquor tanneries. The method includes continuous agitation of chrome sludge along with continuous filtration and movement through successive filtering zones. This method is both economically attractive and vital from an ecological standpoint. The reclaimed chromium values are in condition for reconstitution into fresh chrome-tanning liquors.
    Type: Grant
    Filed: June 20, 1973
    Date of Patent: April 13, 1976
    Assignee: Hoffmann-Stafford Tanning Co.
    Inventor: Harland H. Young