Patents by Inventor Randie R. Olofson

Randie R. Olofson 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).

  • Microscope slide with contrasting surfaces on opposite sides
    Patent number: 5598295
    Abstract: A microscope slide having on a first side an opaque, scratchable coating located at a marking region of the slide, and on a second opposing side located generally behind the scratchable coating at the marking region, a contrastingly-colored coating. Upon scribing an identification mark into the scratchable coating and thus removing the scratchable coating where scribed, the contrastingly-colored coating on the second side of the slide becomes visible from the first side of the slide in the area scribed.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: January 28, 1997
    Assignee: Erie Scientific Company
    Inventor: Randie R. Olofson