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Class Information
Number: 229/237
Name: Envelopes, wrappers, and paperboard boxes > Paperboard box > Having means to facilitate opening the box by severing (e.g., tearing, cutting, piercing, etc.) box material or outer wrapper > Specified detail of a score or perforation (e.g., size, spacing, etc.)
Description: Subject matter wherein a claim recites a particular characteristic of a component part of a line of weakness (i.e. a slit or groove which extends only part way through the box material or a slit or aperture which extends completely through the box material).










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8459538 Corrugated box with an improved opening system Jun. 11, 2013
8225932 Break-open single-dose sealed package Jul. 24, 2012
8079475 Blister package Dec. 20, 2011
8069985 Sealed single-dose break-open package Dec. 6, 2011
7922036 Container for dispensing wipes Apr. 12, 2011
7886933 Household sanitary tissue paper container Feb. 15, 2011
7556191 Rupturable opening for sealed container Jul. 7, 2009
7175066 Shipping and display carton Feb. 13, 2007
7163139 Carton and carton blank Jan. 16, 2007
7055692 Packaging body Jun. 6, 2006
6957763 Container with reclosable fitment Oct. 25, 2005
6832683 Rigid carton of cigarettes partially openable for display Dec. 21, 2004
6766941 Tear-away container top Jul. 27, 2004
6752262 Flat blank for the formation of a rigid carton for cigarette packets Jun. 22, 2004
6688515 Bagless container with reclosable fitment Feb. 10, 2004
6676009 Container having a plurality of selectable volumes Jan. 13, 2004
6669083 Carton with article dispenser Dec. 30, 2003
6523739 Carton for food products and carton blank for such a carton Feb. 25, 2003
6478219 Carton with article dispenser Nov. 12, 2002
6474542 Carton with framed opening feature and product viewing window Nov. 5, 2002
6446860 Tear-away package opening Sep. 10, 2002
6435351 Display shipper Aug. 20, 2002
6419152 Tear-away container top Jul. 16, 2002
6098874 Tear-away container top Aug. 8, 2000
6073833 Shelf ready shipping container Jun. 13, 2000
6062470 Tear-away package opening May. 16, 2000
5968616 Compound container Oct. 19, 1999
5934547 Bridged tab cut for spiral wound container Aug. 10, 1999
5918801 Shipping case Jul. 6, 1999
5865367 Box with improved removable strip Feb. 2, 1999
5865366 Box with improved removable strip Feb. 2, 1999
5769310 Box with improved removable strip Jun. 23, 1998
5704539 Reducible volume containers Jan. 6, 1998
5622309 Carton for packaging cut sheets of paper Apr. 22, 1997
5579943 Container and dispensing closure lid having a tear-away tab Dec. 3, 1996
5560484 Blank for a sleeve type casing with a cover for receiving a recording medium Oct. 1, 1996
5549243 Blank for easily opened box and the box formed from such blank Aug. 27, 1996
5505375 Wrapped article Apr. 9, 1996
5470016 Reducible volume containers Nov. 28, 1995
5464151 Tear tape system and container including the same Nov. 7, 1995
5358176 Tear strip opening for a paperboard container Oct. 25, 1994
5332150 Easy-open shipping/display container, and a blank for erecting the same Jul. 26, 1994
5312659 Laminated film bag for packaging food May. 17, 1994
5234123 Easy-open metal-plastic laminate can lid Aug. 10, 1993
5193673 Environmentally safe holder device Mar. 16, 1993
5184771 Packaging for piece goods Feb. 9, 1993
5083667 Easy-open, reclosable article case Jan. 28, 1992
5078273 Microwave carton and blank for forming the same Jan. 7, 1992
5076439 Carton having a barrier construction and method of making the same Dec. 31, 1991
5065868 Package consisting of a paper bag compactly packing compressed flexible articles Nov. 19, 1991

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