Powder milling method to produce fine powder sizes
Patent 4645131 Issued on February 24, 1987. Estimated Expiration Date: 
December 24, 2004. 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 24, 2004. 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 ReferencesInventorApplicationNo. 06/686017 filed on 12/24/1984US Classes:241/23, With heating or cooling of material241/186.4, Rotating or oscillating feed or discharge conveyor241/189.1, Rotary striking member with circumferential or tangential flow241/275, Centrifugal projection of material241/34, Of feed of material241/67Thermal fluid within or carried by moving comminuting memberExaminersPrimary: Rosenbaum, MarkAttorney, Agent or FirmInternational ClassesB22F 9/04 (20060101)B22F 9/02 (20060101) AbstractA method of milling a powdery substance to finer particle size includes impacting the powdery substance against single or multiple surfaces under vacuum conditions and at reduced temperature condition to cause particle fracture, and collecting said fractured particles. | |
