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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.:

US 4493900 B1

PDFFull Text
Date of Patent:
Jan. 15, 1985

Filed:

Feb. 04, 1983

Low melting enamel frits

Applicant:
Inventors:

Atsushi Nishino, Neyagawa, JP;

Masaki Ikeda, Hirakata, JP;

Kunio Kimura, Hirakata, JP;

Hajime Oyabu, Kawanishi, JP;

Assignee:

Matsushita Electric Industrial Company, Limited, , JP;

Attorney:

Lowe, King, Price & Becker

Primary Examiner:

Howard S Williams

Assistant Examiner:

T L Williams

Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
501 26 ; 501 25 ; 501 79 ;
Abstract

A low melting enamel frit which comprises 31 to 39 wt % of SiO.sub.2, 13 to 21 wt % of B.sub.2 O.sub.3, 14 to 21 wt % of Na.sub.2 O, 1 to 5 wt % of K.sub.2 O, 5 to 20 wt % of ZnO, 2 to 10 wt % of F.sub.2 and 2 to 9 wt % of at least one of Al.sub.2 O.sub.3, ZrO.sub.2 and TiO.sub.2 provided that at least one intermediate oxide is present in an amount of 5 wt % in a maximum. The frit is capable of firing at temperatures lower than A.sub.1 transformation temperature of steel, say, 723.degree. C.

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Nishino, Atsushi. (1985). Low melting enamel frits (U.S. Patent No. 4493900). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4493900

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