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:
Oct. 28, 2003
Filed:
Oct. 31, 2001
Applicant:
Inventor:
Mieko Ogura, Newport Coast, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 6/100 ; B01D 1/904 ; C02F 1/44 ;
U.S. Cl.
CPC ...
B01D 6/100 ; B01D 1/904 ; C02F 1/44 ;
Abstract
Formation of bubbles is prevented during filtration operation by placing an oil on top of a solution-to-be filtered, where the oil is not admixable with the solution and has a lower specific gravity than the solution. The oil seals the solution from air so that no bubbles are formed. The oil does not pass through the filter even after all collectable filtrate of the solution has passed therethrough.