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:
Nov. 27, 1990
Filed:
Jan. 18, 1989
Applicant:
Inventors:
Kohji Tamura, Kawanishi, JP;
Yukio Omure, Takatsuki, JP;
Satoshi Ide, Osaka, JP;
Naoyoshi Hanatani, Settsu, JP;
Toshimasa Fukuzawa, Settsu, JP;
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ;
U.S. Cl.
CPC ...
252171 ; 252162 ; 252170 ; 252364 ; 252D / ;
Abstract
An azeotropic solvent composition which comprises an azeotropic mixture of 77% by weight of Flon-113 and 23% by weight of cyclopentane. The composition can decrease the amount of 1,1,2-trichloro-1,2,2-trifluoroethane excellent in power for dissolving fats and oil, grease, and particularly, waxes used for temporarily fixing silicon wafers, quartz, ceramics without erosion of materials made of plastics and rubbers, and it is easy to control the liquid composition and easy to recover and reuse the composition.