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Class Information
Number: 229/927
Name: Envelopes, wrappers, and paperboard boxes > Means for tearing or breaking rigid or semirigid thermoplastic container
Description: Subject matter wherein a receptacle made of relatively stiff thermoplastic material includes a modification which facilitates forcibly separating the receptacle material to open it.

Patents under this class:

Patent Number Title Of Patent Date Issued
7753205 Packaging container Jul. 13, 2010
5579915 Container for plastic bags Dec. 3, 1996
5386910 Container for plastic bags Feb. 7, 1995
4903842 Container Feb. 27, 1990
4872563 Protective enclosure for hazardous material primary containers Oct. 10, 1989
4784273 Single serving container for tortes or the like Nov. 15, 1988
4762233 Contracting container Aug. 9, 1988
4741441 Medication dispenser with removable liner and sealed compartments May. 3, 1988
4735318 Medication dispenser with removable liner and full skirted compartment covers Apr. 5, 1988
4706753 Method and device for conveying chemicals through borehole Nov. 17, 1987
4678083 Intrusion indicating shield for consumer products Jul. 7, 1987
4670352 Tearable structure Jun. 2, 1987
4518081 Multi-unit tear-away container carrier May. 21, 1985
4489832 Tamper-evident container Dec. 25, 1984
4426004 Tamper proof container and method Jan. 17, 1984
4392389 Sampling tube having closing caps Jul. 12, 1983
4372445 Medication dispenser Feb. 8, 1983
4346299 Cell for containing fluid to be analyzed by x-ray spectroscopy Aug. 24, 1982
4301926 Container assembly for liquids Nov. 24, 1981
4296157 Tube with weakened side wall segment Oct. 20, 1981
4274541 Closure system for containers, in particular for non-returnable containers of semi-rigid material, made out of at least two dish-shaped parts which are joined together Jun. 23, 1981
4253572 Plastic pillbox Mar. 3, 1981
4174238 Hermetically sealed tamperproof port protector and method of making frangible seal Nov. 13, 1979
4084695 Plastic pillbox Apr. 18, 1978
4017133 Fire extinguisher enclosure Apr. 12, 1977
3951313 Reservoir with prepacked diluent Apr. 20, 1976
3937323 Protective frangible dispensing enclosure for article Feb. 10, 1976

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