Piezoelectric and pyroelectric polymers
Patent 4877988 Issued on October 31, 1989. Estimated Expiration Date: 
October 31, 2006. 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.
October 31, 2006. 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 2436144 2838715 3749977 3832580 3912830 Piezoelectric elements of organic high molecular weight materials Patent #: 4204135 InventorsAssigneeApplicationNo. 736982 filed on 05/22/1985US Classes:310/306, Thermal or pyromagnetic310/311, Piezoelectric elements and devices310/357, Orientation of piezoelectric polarization310/800PIEZOELECTRIC POLYMERS (E.G., MYLAR, PVDF)ExaminersPrimary: Budd, Mark O.Attorney, Agent or FirmInternational ClassesH01L 041/18H02N 007/00 AbstractDisclosed are new piezoelectric/pyroelectric materials of polarized homopolymer and copolymers of trifluorovinyl acetate. Also disclosed is a unique predictive relationship for determining the piezoelectricity of unknown material.Other References
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