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. 05, 1998
Filed:
Feb. 28, 1996
Masao Hayashi, Shiga, JP;
Go Minami, Osaka, JP;
Kuniaki Matsunaga, Tochigi, JP;
Tsuyoshi Fujii, Tokyo, JP;
Takashi Hayashi, Chiba, JP;
Matsushita Electronics Corporation, Osaka, JP;
Abstract
In pressing and molding a shadow mask or the like, press-molding oil containing alkyl carbonate shown in the following Chemical Formula as an active ingredient is coated on a press mold. After pressing and molding a metallic material with the press mold, the press-molding oil is washed and removed with warm water. Alternatively, the oil is dried or thermally decomposed. As a result, less than about 10 .mu.g/cm.sup.2 oil is left as residue on the product. ##STR1## where a and b are an integer from one to six; x and y are an integer from 0 to 30; R.sup.1 and R.sup.2 are an alkyl group, cycloalkyl group, alkylphenyl group, benzyl group or alkylbenzyl group having from one to thirty carbon atoms and straight or branched alkyl chains.