The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 1991
Filed:
Jun. 12, 1990
Richard J Lee, Murrysville, PA (US);
Barbara A Smith, Apollo, PA (US);
Robert G Theys, Monroeville, PA (US);
Robert A Theys, Pittsburgh, PA (US);
Judy A Murphy, St. Louis, MO (US);
RJ Lee Group, Inc., Monroeville, PA (US);
Abstract
This application relates to a method for preparing specimens for viewing particles and/or fibers captured upon membrane filters with a TEM. The method comprises mounting a section of the membrane filter on a glass slide with a quick drying liquid applied between the filter membrane and the slide which liquid will not release the filter membrane when the slide is immersed in a selected solvent and such that the liquid will not render the filter membrane resistant to the selected solvent. Next, the filter section surface is coated with carbon to replicate the surface of the membrane filter and the particles and fibers thereupon. The coated membrane is then immersed in the selected solvent which will attack the filter material causing the carbon film squares to float off of the memberane filter.