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. 06, 2014
Filed:
Jun. 03, 2008
Applicants:
Takeo Tokiai, Ichihara, JP;
Masato Kaneko, Ichihara, JP;
Inventors:
Takeo Tokiai, Ichihara, JP;
Masato Kaneko, Ichihara, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A refrigerator oil composition contains base oil and polyalkylene glycol (PAG) block copolymer. The PAG block polymer is represented by the following formula (1).R[(OR)(OE)OR]  (1)In the formula: Rrepresents a hydrocarbon residue having 1 to 10 carbon atoms; Rrepresents an alkenyl group having 3 to 6 carbon atoms; E represents an ethylene group; Rrepresents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; m and n each represent a positive integer, a ratio of m to n (m/n) being 99/1 to 50/50; and l represents an integer in a range of 1 to 100.