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. 31, 2026
Filed:
Feb. 15, 2022
Applicant:
Qwarzo S.p.a., Palazzolo Sull'Oglio, IT;
Inventor:
Luca Panzeri, Lomagna, IT;
Assignee:
QWARZO S.P.A., Palazzolo Sull'Oglio, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/16 (2006.01); B65D 65/42 (2006.01); D21H 19/40 (2006.01); D21H 19/62 (2006.01); D21H 23/70 (2006.01); D21H 27/10 (2006.01);
U.S. Cl.
CPC ...
D21H 21/16 (2013.01); B65D 65/42 (2013.01); D21H 19/40 (2013.01); D21H 19/62 (2013.01); D21H 23/70 (2013.01); D21H 27/10 (2013.01);
Abstract
A process for the treatment of paper or cardboard surface is described that makes them impermeable to water, oil, and atmospheric gases, in particular oxygen. The invention also relates to the impermeable paper or cardboard thus obtained, which are particularly suitable for producing food product packaging or tableware.