US Patent No: 5,332,147

Number of patents in Portfolio can not be more than 2000

Buckle-proof clamshell carton

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Importance

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Abstract

A clamshell type carton is provided with a cut along the hinge score line connecting the upper cover and lower tray portions. A second cut is placed in the back panel of the carton, above or below the hinge score line cut, wherein the second cut is a continuous curve having a first end point located in the back panel and a second end point intersecting the cut along the hinge score line. The second cut is utilized to facilitate the easy opening and closing of the carton without buckling occurring in the back panel in the region of the hinge score line.

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First Claim

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Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PERSECO DIVISION OF THE HAVI GROUP LPOAK BROOK, IL4

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sorenson, John F Naperville, IL 9 162

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GAYLORD CONTAINER CORPORATION (2)
4,245,773 Container with stacking alignment and latching structure 25 1979
4,304,353 Container with latching structure 34 1980
 
INTERNATIONAL PAPER COMPANY (2)
4,360,147 Semi-domed paperboard food carton 16 1981
5,039,003 Paperboard food carton and divider 77 1988
 
PERSECO DIVISION OF THE HAVI GROUP LP (2)
5,205,476 Clamshell carton having an improved latching mechanism 32 1992
5,221,040 Buckle-proof clamshell carton 16 1992
 
ARVCO CONTAINER CORPORATION (1)
5,098,013 Single slice pizza carrier 21 1991
 
Container Corporation of America (1)
4,232,816 Clamshell type carton 41 1979
 
Dixie Canada Inc. (1)
4,570,845 Carton closure releasable by deformation 13 1984
 
DOPACO, INC. (1)
4,877,178 Paperboard foldable carton 27 1989
 
GEORGIA-PACIFIC CORPORATION (1)
4,389,013 Container having a self-locking lid 36 1981
 
GRAVURE PACKAGING, INC. (1)
4,792,085 Buckle-proof clamshell container 15 1987
 
HUB FOLDING BOX COMPANY, INC. (1)
4,431,128 One piece blank for nesting double tray, coverable, burger and fries box 20 1982
 
JAMES RIVER PAPER COMPANY, INC. (1)
4,266,713 Unitary double cavity carton 34 1979
 
NIPPON PAPER INDUSTRIES CO., LTD. (1)
4,909,432 Paper container for liquid 12 1988
 
RAND-WHITNEY ROBERTSON PAPER CORPORATION, (1)
4,413,726 Display box 12 1982
 
WALDORF CORPORATION, A CORP. OF (1)
4,230,261 Lunch box carton and a blank for forming same 23 1979
 
Other [Check patent profile for assignment information] (1)
4,254,862 Foldable disposable sharps container 16 1978

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
DIXIE CONSUMER PRODUCTS LLC (4)
7,802,695 Lidded container with linear brim segments and medial sealing beads 1 2007
7,658,296 Sealable portion cups and lids therefor 0 2007
D645737 Sealable snack container 5 2010
D645339 Sealable snack container 0 2010
 
E. KHASHOGGI INDUSTRIES (4)
5,707,474 Methods for manufacturing hinges having a highly inorganically filled matrix 14 1995
5,660,904 Sheets having a highly inorganically filled organic polymer matrix 19 1995
5,631,053 Hinged articles having an inorganically filled matrix 25 1995
5,705,203 Systems for molding articles which include a hinged starch-bound cellular matrix 18 1996
 
EARTHSHELL SPE, LLC (1)
5,843,544 Articles which include a hinged starch-bound cellular matrix 19 1996
 
INTERNATIONAL PAPER COMPANY (1)
5,553,772 Paperboard clamshell carton 11 1995
 
PACTIV PACKAGING INC. (1)
6,349,875 Container having an improved hinge 3 2000
 
PIONEER HI-BRED INTERNATIONAL, INC. (1)
7,938,284 Buckling clamshell container for automated aliquot and dispersal processes 0 2007
 
SEDA S.P.A. (1)
7,874,476 Container and blank for the production thereof 0 2006