Security paper for currency and banknotes
Patent 4761205 Issued on August 2, 1988. Estimated Expiration Date: 
December 17, 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.
December 17, 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 28370 3880706 Paper incorporating a partially embedded strip Security features in paper Patent #: 4552617 InventorAssigneeApplicationNo. 06/942805 filed on 12/17/1986US Classes:162/103, Including solid non-waterlaid preform162/105, Metallic162/134, With printing and/or variegated coloring162/140, Safety, identification and fraud preventing paper428/916FRAUD OR TAMPER DETECTINGExaminersPrimary: Chin, PeterInternational ClassesG07D 7/00 (20060101)B41M 3/14 (20060101) B42D 15/00 (20060101) D21H 21/40 (20060101) D21H 21/44 (20060101) AbstractSecurity devices in the form of metalized plastic films are incorporated within a security paper such as banknotes and other valuable documents during the papermaking process for viewing solely by means of transmitted light. The devices comprise printing of extreme fine line clarity and high opacity such that legibility is possible by means of transmitted light while remaining completely indiscernable under reflected light. | |
