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:
Jan. 02, 1979
Filed:
Jun. 29, 1977
Applicant:
Inventor:
Akio Saito, Tokorozawa, JP;
Assignee:
Showa Seitai Kogyo Kaisha Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
229 625 ; 229D / ;
Abstract
A bag adapted to be packed with cement or the like by blowing it into the bag through a foldable blow-in port comprises an outer layer of synthetic resin which is impervious to air and moisture and an inner layer of paper bonded to the outer layer by a layer of bonding agent. The surface of the layer of the bonding agent facing the paper layer is provided with a plurality of longitudinal grooves which act as exhaust passages for discharging the air blown into the bag.