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:
Aug. 09, 1977
Filed:
Aug. 16, 1976
Applicant:
Inventors:
Charles W Simons, Bedford, MA (US);
Gerald J O'Neill, Arlington, MA (US);
Joel A Gribens, Framingham, MA (US);
Assignee:
W. R. Grace & Co., Cambridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
424 45 ; 252305 ; 424 47 ;
Abstract
Certain fluorinated dimethyl ethers have been found to possess the stability, the compatibility and sufficient freedom from deleterious physiological effects to be used as aerosol propellants in cosmetic, hygenic, pharmaceutical and other personal products. These compounds, bis(difluoromethyl) ether and perfluorodimethyl ether, are also free of the chlorine atoms believed responsible for some destruction of ozone in the upper atmosphere.