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Class Information
Number: 383/54
Name: Flexible bags > With closure > Self-closing type > Responsive to content (e.g., valve) > In distinct end wall > Including separate closure element
Description: Subject matter wherein the closure includes an initially separate member which has been secured to the bag.

Patents under this class:

Patent Number Title Of Patent Date Issued
6783345 In situ molded thermal barriers Aug. 31, 2004
6723408 Resealable envelope Apr. 20, 2004
6595688 Sealable valve bag and method for making a sealable valve bag Jul. 22, 2003
6471403 Valve bag Oct. 29, 2002
6164823 Valve bag and method for making a valve bag Dec. 26, 2000
6126316 Automatic self-closing valve closure assembly for valve bags Oct. 3, 2000
6092930 Self-closing sealable valve bag Jul. 25, 2000
6074095 Four member valve closure assembly for valve bags Jun. 13, 2000
5967664 Sift proof valve bag Oct. 19, 1999
5806982 Self-closing sealable valve bag Sep. 15, 1998
5692546 Method of loading a bulk cargo Dec. 2, 1997
5516210 Self-closing sealable valve bag May. 14, 1996
5158370 Bag valves Oct. 27, 1992
5104235 Packing container made from a flexible material in the form of a sack or bag Apr. 14, 1992
5098201 Sealable valved bag Mar. 24, 1992
4930904 Cross-bottom or block-bottom valve sack Jun. 5, 1990
4759640 Rose-bottom or block-bottom valve bag Jul. 26, 1988
4685148 Square ended valve bag Aug. 4, 1987
4637062 Plastic bag assembly including a conduit member Jan. 13, 1987
4401140 Filler valve for valve bag Aug. 30, 1983
4391404 Sleeve valve for flexible bags Jul. 5, 1983
4382538 Valved lined container May. 10, 1983
4367620 Valved bag sealing Jan. 11, 1983
4364510 Filling valve for a bag or other container Dec. 21, 1982
4361268 Sleeve construction for a bag having a filling opening Nov. 30, 1982
4316574 Sleeve valve for flexible bags Feb. 23, 1982
4166482 Lubricated valve bag and method of lubricating valve spout Sep. 4, 1979
4111354 Valve bag Sep. 5, 1978
4095736 Bag closure having valve sleeve Jun. 20, 1978
4071187 Valve bag Jan. 31, 1978
4049191 Block bottom valve bag Sep. 20, 1977
3990628 Plastic bag with zig zag plies Nov. 9, 1976
3989182 Vented bag Nov. 2, 1976
3945562 Cross-bottom bag and method of making same Mar. 23, 1976

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