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:
Aug. 30, 1988
Filed:
Sep. 03, 1987
Applicant:
Inventor:
Biing-Lin Lee, Broadview Heights, OH (US);
Assignee:
The B. F. Goodrich Company, Akron, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 38 ; 73866 ;
Abstract
A method for determining the approximate value of the internal porosity of a powder is set forth wherein a quick determination is achieved by measuring the maximum drawing force of an object such as a plate being withdrawn from within a bed of the powder, and repeating the removal of the object at least one additional time from a more compacted powder bed and utilizing the values obtained to solve simultaneous equations. The process is particularly suitable with regard to determining the internal porosity of polyvinyl chloride powders.