Plastic interlayer for lamination with heights of 10 to 500 microns
Patent 4452840 Issued on June 5, 1984. Estimated Expiration Date: 
February 19, 2002. 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.
February 19, 2002. 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 3249490 Interlayer for laminated safety glass Embossed thermoplastic material Patent #: 4343848 InventorsAssigneeApplicationNo. 06/350353 filed on 02/19/1982US Classes:428/156, Including variation in thickness428/120, Inward from edge of web or sheet428/220, Physical dimension specified428/437Next to acetal of polymerized unsaturated alcohol (e.g., formal butyral, etc.)ExaminersPrimary: Lesmes, George F.Assistant: Schwartz, Pamela R. Attorney, Agent or FirmInternational ClassesB32B 17/10 (20060101)B32B 17/06 (20060101) B32B 3/30 (20060101) Foreign Application Priority Data1981-03-12 JPAbstractA plastic interlayer for lamination comprises a plastic film or sheet, at least one surface of which has a structure having many separated projections and continuous roots in the same level.Other References
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