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:
May. 18, 1976
Filed:
Sep. 24, 1973
Martin B Sheratte, Reseda, CA (US);
McDonnell Douglas Corporation, Long Beach, CA (US);
Abstract
Novel epoxides in the form of esters or polyesters of 4,5-epoxy-1,2-cyclohexane dicarboxylic acid, and functional fluid compositions containing said epoxides, such functional fluids consisting essentially of (1) a phosphate ester, e.g., dibutyl phenyl phosphate, or an amide of an acid of phosphorus, (2) a viscosity index improver, e.g., a polyglycol or polyglycol ether, or polyacrylate or polymethacrylate viscosity index improver, and (3) a small amount of the above novel epoxide, e.g., poly(ethylene-.DELTA..sup.4 -epoxy tetrahydrophthalate), such epoxide preventing acid build-up in the fluid, and preventing undesirable deposits particularly when such fluid is employed as an aircraft hydraulic fluid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile