Patents by Inventor Lena Ross

Lena Ross 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).

  • Process and apparatus for disengaging and separating bitumen from pulverized tar sands using selective cohesion
    Patent number: 5066388
    Abstract: Process and apparatus for disengaging organic, bituminous material from pulverized bituminous ores and for recovering a concentrated mixture of the bituminous material and water. Wherein the apparatus comprises a pulverizer to pulverize the ores to be processed to particles not larger than 1/4 inch in size and inner and outer process vessels which are preferably combined into a unitary assembly and wherein the process comprises a combination of mechanical and hot water disengagement of the organic, bituminous materials from the mineral ore solids, i.e.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: November 19, 1991
    Inventor: Lena Ross
  • Combined pan and diaper pail and cover therefor
    Patent number: D329312
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: September 8, 1992
    Inventor: Lena Ross