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:
Mar. 30, 1993
Filed:
Nov. 29, 1989
Toshiyuki Mozawa, Yokohama, JP;
Tatsuya Tamura, Yokohama, JP;
Abstract
A window for automobiles or the like includes a window plate and an integral frame member along at least one edge of the window plate. The window is manufactured by preparing a window plate and a pre-shaped frame body which comprises a main portion and a surface layer covering an outer side of the main portion. The main portion of the pre-shaped frame body is composed of a thermoplastic synthetic resin material having a relatively high dielectric loss and containing a heat foamable agent therein. The surface layer is composed of a non-foamable thermoplastic synthetic resin material. The pre-shaped frame body is subjected to a dielectric heating in a mold, to cause the foamable agent in the main portion of the pre-shaped frame body to expand in the mold cavity. The resultant frame member of the window comprises a main portion composed essentially of a foamed thermoplastic synthetic resin material, which is covered on its outer side by a surface layer composed essentially of a non-foamed thermoplastic synthetic resin material.