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. 13, 1987
Filed:
Jul. 14, 1986
Applicant:
Inventors:
Masami Suzuki, Tokyo, JP;
Kouki Yamaguchi, Tokyo, JP;
Hisato Katayama, Tokyo, JP;
Tadayoshi Muta, Tokyo, JP;
Masakuni Okubo, Tokyo, JP;
Akira Mochizuki, Tokyo, JP;
Hiroshi Adachi, Tokyo, JP;
Assignee:
Kajima Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
5538 / ; 55472 ; 55500 ; 98 316 ; 98 346 ; 98 36 ;
Abstract
A clean room is adapted to provide a plurality of clean air zones with different degrees of cleanliness. Air is passed through high efficiency particulate air filters in the ceiling of the room and withdrawn through shutters in the floor of the room. The shutters are adjustable to maintain a pressure-balanced system. The room is divided by walls and partitions to define different zones which are filtered by different classes of filters depending on the degree of cleanliness required in each zone.