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Browse by Category: Main > Packaging & Containers
Class Information
Number: 383/44
Name: Flexible bags > With closure > Self-closing type > Responsive to content (e.g., valve)
Description: Subject matter wherein the weight or pressure of the content forces the closure into its closed configuration.










Sub-classes under this class:

Class Number Class Name Patents
383/57 Closure includes inwardly folded bag wall portions 12
383/55 Folded bag corner 6
383/53 In distinct end wall 10
383/58 Overlying access opening in bag material 14
383/46 With closure reinforcing or stiffening means 16
383/47 With means to facilitate opening closure 8
383/48 With supplemental closing feature 32
383/45 With vent 32


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8622877 Weighted article with fill spout Jan. 7, 2014
8590574 Gas stop structure capable of repeated inflation and deflation Nov. 26, 2013
8529129 Closure element for a pouch Sep. 10, 2013
8419278 Check valve and compression bag and air cushion bag equipped therewith Apr. 16, 2013
8381948 Automatic liquid stop bag with bent portion Feb. 26, 2013
8360641 Air bag with continuous heat resistance material Jan. 29, 2013
8328159 Vacuum valve device for bag Dec. 11, 2012
8272107 Vacuum-actuated closure mechanism for a resealable pouch Sep. 25, 2012
8197138 Evacuable container and evacuation strip therefor Jun. 12, 2012
8177700 Method for making a valve for sealing an evacuation port May. 15, 2012
8167489 Packaging bag for secondary packaging configured to transport infectious substances May. 1, 2012
8104960 Sealable and disposable receptacle for biologic waste products Jan. 31, 2012
7967166 Reclosable storage bag attached to container by removable retainer ring Jun. 28, 2011
7866886 Packaging bag with self-closeable outflow port, and method of manufacturing the packaging bag Jan. 11, 2011
7726880 Flexible storage bag Jun. 1, 2010
7708464 Deaeration valve and compression bag equipped therewith May. 4, 2010
7695786 Inflatable pneumatic bag Apr. 13, 2010
7694820 Multi-sectional air enclosure and check valve apparatus Apr. 13, 2010
7685793 Evacuatable container Mar. 30, 2010
7658542 Flexible liquid container Feb. 9, 2010
7448803 Process for producing compression bag and compression bag Nov. 11, 2008
7438473 Flexible storage bag Oct. 21, 2008
7331715 Valve element Feb. 19, 2008
7311442 Air valve for a fillable poly bag Dec. 25, 2007
7249612 Mounting structure of an open/close valve in a sealed body Jul. 31, 2007
6969195 Package, particularly for packing industrial products Nov. 29, 2005
6827099 Sealing method and apparatus for fluid container Dec. 7, 2004
6783345 In situ molded thermal barriers Aug. 31, 2004
6641307 Pouch having a branched chamber Nov. 4, 2003
6595688 Sealable valve bag and method for making a sealable valve bag Jul. 22, 2003
6499879 Sealable valve bag and method for making a sealable valve bag Dec. 31, 2002
6481889 Sealed enclosure, method for the manufacture thereof, and method of packaging a beverage in said enclosure Nov. 19, 2002
6471403 Valve bag Oct. 29, 2002
6423387 Resilient containers for hyperpolarized gases and associated methods Jul. 23, 2002
6357915 Storage bag with one-way air valve Mar. 19, 2002
6345911 Lock top canister bag and method of manufacture Feb. 12, 2002
6270255 Opening system for beverage container Aug. 7, 2001
6164825 Stable, flexible, easy open pouch Dec. 26, 2000
6120181 Pillow bag with integral filling conduit Sep. 19, 2000
6116781 Storage bag with one-way air valve Sep. 12, 2000
6116780 Disposable toilet system Sep. 12, 2000
6092930 Self-closing sealable valve bag Jul. 25, 2000
6076968 Easy open flexible pouch Jun. 20, 2000
6055872 Push-pull valve for gas sampling bags May. 2, 2000
6045264 Self-sealing, disposable storage bag Apr. 4, 2000
5934808 Device for giving proper shape to bags for display purposes Aug. 10, 1999
5806982 Self-closing sealable valve bag Sep. 15, 1998
5745926 Safety bag, in particular for hygienic purposes May. 5, 1998
5595521 Balloons and balloon valves Jan. 21, 1997
5558441 Receptacle Sep. 24, 1996

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