Formation of halide optical elements by hydrostatic press forging
Patent 4217318 Issued on August 12, 1980. Estimated Expiration Date: 
August 12, 1997. 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.
August 12, 1997. 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 3497578 3577635 3794704 Preparation of high strength halide bodies Patent #: 4118448 InventorAssigneeApplicationNo. 05/790740 filed on 04/25/1977US Classes:264/1.23, Halogen containing264/325, Utilizing closed mold cavity264/570, Including hydrostatic or liquid pressure264/85, UTILIZING SPECIAL INERT GASEOUS ATMOSPHERE OR FLUSHING MOLD WITH INERT LIQUID65/33.3Halogen containing phase (e.g., crystalline or noncrystalline, etc.)ExaminersPrimary: Parrish, John A.Attorney, Agent or FirmInternational ClassesB29D 11/00 (20060101)G02B 1/00 (20060101) H01S 3/034 (20060101) H01S 3/03 (20060101) C04B 35/515 (20060101) C04B 35/645 (20060101) AbstractFine-grained halide bodies are formed which have comparable optical properties to a single crystal halide body. The halide bodies are formed by press forging while an essentially constant fluid pressure is applied to the halide body.Other References
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