Method for molding of powders
Patent 4927600 Issued on May 22, 1990. Estimated Expiration Date: 
October 8, 2007. 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 8, 2007. 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 2129240 2513785 Method of producing molded parts by cold isostatic compression Method of molding powders of metal, ceramic and the like Patent #: 4612163 InventorsAssigneeApplicationNo. 105985 filed on 10/08/1987US Classes:419/49, Hot isostatic pressing (HIP)264/102, To degas or prevent gas entrapment264/313, Utilizing a flexible, deformable, or destructable molding surface or material264/317, Removing mold by destruction264/517, Bulk deposition of particles by differential fluid pressure419/68Isostatic/Hydrostatic pressingExaminersPrimary: Derrington, JamesAttorney, Agent or FirmForeign Patent References
International ClassB22F 001/00Foreign Application Priority Data1985-05-28 JPAbstractThe invention is concerned with the method of compression molding a metallic or ceramic powders. The method includes the step of maintaining a negative pressure within a first mold of noncompactable powders for intimately contacting on its inner surface a pouch-like member of thin-walled resilient material for producing a second mold, and the step of compactly charging starting powders into the second mold and exhausting air from and sealing the second mold, taking out a pre-molded body of the metallis or ceramic powders together with the second mold and the step of processing the pre-molded body by a cold or hot isostatic press. | |
