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. 11, 2023
Filed:
Dec. 20, 2018
Yoshino Gypsum Co., Ltd., Tokyo, JP;
Yukiko Chatani, Chiyoda-ku, JP;
Mariko Seki, Chiyoda-ku, JP;
Takahiro Hebiishi, Chiyoda-ku, JP;
Eiichi Kuroda, Chiyoda-ku, JP;
Wataru Ohuchi, Chiyoda-ku, JP;
Takuji Yamashita, Chiyoda-ku, JP;
Kouji Yamakata, Chiyoda-ku, JP;
YOSHINO GYPSUM CO., LTD., Tokyo, JP;
Abstract
A penetration part fireproof covering material used when a penetration part covered for fireproof is formed in a fireproof beam that is a fireproof constructional member that constitutes a wooden building, wherein the penetration part fireproof covering material is formed to have a tubular shape by stacking a plurality of gypsum board pieces () formed from gypsum boards in a thickness direction and unitarily connecting the plurality of gypsum board pieces. The penetration part fireproof covering material is formed to have the tubular shape by stacking the plurality of gypsum board pieces that preferably have an annular shape and are cut out from commercially available gypsum boards having thicknesses of 9.5 mm to 25.5 mm while fixing the plurality of gypsum board pieces to each other preferably using metal fasteners such as staples, and unitarily connecting the plurality of gypsum board pieces.