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Browse by Category: Main > Packaging & Containers
Class Information
Number: 383/94
Name: Flexible bags > With closure > Closure within bag > Heat seal
Description: Subject matter wherein the closure includes portions of bag material which have been welded together.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7404869 Method for producing packaging laminated material Jul. 29, 2008
7311442 Air valve for a fillable poly bag Dec. 25, 2007
7270238 Vacuum sealable bag apparatus and method Sep. 18, 2007
7150734 Bag for packaging liquid biological substances, having an integrated cannula Dec. 19, 2006
7045190 Packaging material and packaged product May. 16, 2006
6991109 Vacuum sealable bag apparatus and method Jan. 31, 2006
6974447 High gas barrier receptacle and closure assembly Dec. 13, 2005
6468611 Anti-fomitic devices Oct. 22, 2002
6346285 Article comprising film having polyamide sealant, polyamide core layer, and O2-barrier layer, and packaged product using same Feb. 12, 2002
6231237 Container having rectangular base and its manufacturing May. 15, 2001
6226964 Method for forming bags in plastic material and the bag thus produced May. 8, 2001
6015235 Puncture-resistant barrier pouch Jan. 18, 2000
5941643 Partially zippered pouch and machine for making same Aug. 24, 1999
5934808 Device for giving proper shape to bags for display purposes Aug. 10, 1999
5827583 Barrier package Oct. 27, 1998
5733045 Web for package blanks and method Mar. 31, 1998
5597634 Changeable media labels Jan. 28, 1997
5553943 Multiple ply plastic lined bag with satchel bottom Sep. 10, 1996
5529396 Environmentally friendly pinch bottom bag assembly and method of making Jun. 25, 1996
5507578 Device for giving proper shape to bags for display purposes Apr. 16, 1996
5474383 Flexible container apparatus with substantially rectangular-bottomed configuration Dec. 12, 1995
5350240 Stand-up pouch having cross-seal feature and method of making Sep. 27, 1994
5344719 Welding band Sep. 6, 1994
5330269 Package Jul. 19, 1994
5281027 Multiple ply bag with detachable inner seal pouch for packaging products Jan. 25, 1994
5275491 Zippered bags and method of forming the same Jan. 4, 1994
RE34347 Reclosable bag especially suitable for cereal packaging, and method Aug. 17, 1993
RE34193 .[.Snack bag.]. .Iadd.bag for objects such as snacks Mar. 9, 1993
5118203 Resealable packages and method and apparatus for producing same Jun. 2, 1992
5087235 Method for making a collapsible bag with spout Feb. 11, 1992
5016755 Heat sealed disposable paint bag and method May. 21, 1991
4986673 Resealable bag arrangement and method Jan. 22, 1991
4961495 Plastic container having an easy-to-peel seal forming compartments Oct. 9, 1990
4951446 Method for making foil packaging Aug. 28, 1990
4950087 Snack bag Aug. 21, 1990
4925318 Packing, method of manufacturing same, and strip material therefor May. 15, 1990
4923701 Zippered cook-in-bag pouch and method May. 8, 1990
4915289 Easily openable sealed container Apr. 10, 1990
4913561 Gussetted flexible package with presealed portions and method of making the same Apr. 3, 1990
4895457 RF-sealable packaging containers Jan. 23, 1990
4818544 Beverage packages Apr. 4, 1989
4787754 Reclosable flexible bags having fastener profiles attached to exterior walls thereof and a method of making same Nov. 29, 1988
4759642 Reclosable bag especially suitable for cereal packaging, and method Jul. 26, 1988
4759494 Liquid-proof envelope with attached identification form Jul. 26, 1988
4706298 Fused plastic bag closure and apparatus for making same Nov. 10, 1987
4705174 Sealed flexible container with non-destructive peelable opening Nov. 10, 1987
4696404 Heat sealed package with perforated compartment seal Sep. 29, 1987
4638913 Multiply package having delaminating easy open seal Jan. 27, 1987
4630891 Tamper resistant security film Dec. 23, 1986
4588554 Reagent package May. 13, 1986

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