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. 14, 1976
Filed:
Mar. 11, 1975
Applicant:
Inventors:
Toru Miyagi, Shimodate, JA;
Nobuyoshi Katakai, Shimodate, JA;
Masanori Narita, Shimodate, JA;
Tatsuya Uchida, Shimodate, JA;
Minondo Kimura, Inazawa, JA;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02C / ;
U.S. Cl.
CPC ...
210151 ; 210220 ; 210274 ;
Abstract
A device for purifying sewage by employing a bed of aerobes or activated sludge characterized by the use of a movable air supply means which is moved across the bottom portion of the bed to apply a concentrated supply of air to a limited portion of the bed to effect air washing of the bed and also applies the air washing to the entire bed in a predetermined period of time.