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:
Sep. 19, 1978
Filed:
Jun. 14, 1976
Applicant:
Inventor:
Douglas W Voegeli, Shoreview, MN (US);
Assignee:
Minnesota Mining & Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29G / ;
U.S. Cl.
CPC ...
264122 ; 264126 ;
Abstract
A method of adhering resin coated spherical particles of substantially uniform size together in the presence of an inert lubricant and under pressure at their points of contact to produce a porous matrix having numerous interconnecting passageways useful in making a body for a sparger for producing bubbles of uniform size in liquids.