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:
Apr. 17, 1990
Filed:
Feb. 16, 1989
Applicant:
Inventors:
Yasuhiko Watanabe, Kitakyushu, JP;
Nobuyoshi Nakamura, Kitakyushu, JP;
Yoshinori Kuriyama, Kitakyushu, JP;
Takuji Motegi, Kitakyushu, JP;
Assignee:
Nippon Steel Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156 79 ; 156267 ; 264 467 ; 264138 ; 428117 ;
Abstract
This invention discloses lightweight panels consisting of a honeycomb, boards on both sides, and phenolic foam of a density of 7-20 Kg/m.sup.3 in the cavities of the honeycomb and a method of making a honeycomb core, with the panels characterized by being light, fireproof, fire-resistant, thermally insulating, and of high strength and useful for building panels, particularly for panels in transportation equipment.