Shipping bag
Patent 4576844 Issued on March 18, 1986. Estimated Expiration Date: 
July 16, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 16, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3833166 Packing bag for light-sensitive material Composite packing film and packing bag made of the same Multilayer films comprising low pressure, low density polyethylene Patent #: 4399173 InventorsAssigneeApplicationNo. 06/631540 filed on 07/16/1984US Classes:428/35.2, Nonself-supporting tubular film or bag (e.g., pouch, envelope, packet, etc.)383/109, Multi-layer or ply383/119, Reinforced383/908, MATERIAL HAVING SPECIFIED GRAIN DIRECTION OR MOLECULAR ORIENTATION428/349, Synthetic resin or polymer428/516, Monoolefin polymer428/910PRODUCT WITH MOLECULAR ORIENTATIONExaminersPrimary: Kittle, John E.Assistant: Seidleck, James J. Attorney, Agent or FirmInternational ClassesB32B 27/32 (20060101)B65D 30/08 (20060101) Foreign Application Priority Data1983-11-28 CAAbstractA thermoplastic heavy duty shipping bag having walls formed of cross-laminated outer plies of uni-axially oriented polyethylene and inner walls of low density polyethylene, heat sealed thereto. The bag provides improved puncture and snag resistance. | |
