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:
Sep. 06, 1994
Filed:
Jul. 29, 1992
Applicant:
Inventors:
Noboru Umemoto, Kamifukuoka, JP;
Takeshi Nomura, Tsurugashima, JP;
Toshiaki Kuribayashi, Tsurugashima, JP;
Takehisa Sato, Saitama, JP;
Hirotaka Tomizawa, Tokorozawa, JP;
Assignee:
Tonen Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
252-9 ; 252 73 ; 252 11 ; 585 10 ; 585 21 ; 585255 ; 585259 ; 585317 ;
Abstract
A traction fluid lubricant is disclosed which contains a naphthenic ingredient having a weight average molecular weight of 200-300 and obtained by hydrogenating oligomers of cyclopentadiene having a ratio of the number of norbornenic double bond to that of cyclopentenic double bond of smaller than 0.9 but not smaller than 0.1. The naphthenic ingredient is suitably used in conjunction with an auxiliary ingredient selected from a polybutene having a viscosity of 5-60 cSt at 40.degree. C. and a bicyclohexyl compound.