US Patent 7845514 Filled polystyrene tear back container lids
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Patent abstract
The invention relates to tear-back thermoformed high impact polystyrene lids having from at least 10% to about 15% of filler and the specified configuration of the tear-back portion. In particular, the tear back lid comprises a tear back portion defined by two sets of tear back indentations and a left and a right notch cut into a skirt defined by the outer diameter of the lid. The combination of the filler amount and tear-back configuration allows an improved tearability for the filled polystyrene lids.
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US Patent 07845514 Filled polystyrene tear back container lids US Patent 7845514 Filled polystyrene tear back container lids
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Patent Number
0784551400
Patent Number
784551400
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Patent Jurisdiction
Patent Number
078455140
Date of Patent
December 7, 2010
0Patent Application Number
116826370
Date Filed
March 6, 2007
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
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Patent Jurisdiction
Patent Number
078455140
Date of Patent
December 7, 2010
0Patent Application Number
116826370
Date Filed
March 6, 2007
0Official Website
Patent Primary Examiner
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US Patent 07845514 Filled polystyrene tear back container lids
Infobox
Is a
Patent jurisdiction
Patent number
07845514
Date of patent
December 7, 2010
Patent application number
11682637
Date Filed
March 6, 2007
Patent primary examiner
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