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:
Dec. 04, 2001
Filed:
May. 06, 1999
Raija Ahvenainen, Espoo, FI;
Timo Pullinen, Espoo, FI;
Eero Hurme, Espoo, FI;
Maria Smolander, Espoo, FI;
Matti Siika-Aho, Espoo, FI;
Abstract
Package (,) for decayable foodstuffs (,), consisting of a package material (,) and forming a mainly closed package space (,) and a mainly closed indicator space (,) for an indicator (,). The indicator space (,) forms an exterior wall (,) adjoining the environment (,) and made of a material (,) with a controllable gas permeability so that gas can penetrate through the exterior wall into the indicator space in a controlled manner as the package,) is aging, so that the indicator (,) will indicate the entry of gas into the indicator space and therefore the aging of the package upon the lapse of a certain time after the package was exposed to the environment; and an interior wall (,) of the indicator space (,), adjoining the package space,) and made of a material controllably permeable to gas so that gas entering into and/or generated in the package space can penetrate from the package space into the indicator space in a controlled manner and the indicator will indicate that gas has entered into the package space.