Apparatus for the preparation of melt-sprayed spherical phenacetin granules
Patent 4092089 Issued on May 30, 1978. Estimated Expiration Date: 
May 30, 1995. 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.
May 30, 1995. 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 3078513 3202731 3386131 3421182 3887692 InventorsAssigneeApplicationNo. 798447 filed on 05/19/1977US Classes:425/10, And distinct means applying congealing fluid to formed particles264/14, Into moving fluid425/378.1, Including heating or cooling means425/382.3Including additional rotating means downstream of the primary pressurizing meansExaminersPrimary: Spicer, Robert L. Jr.Attorney, Agent or FirmInternational ClassB29C 023/00Foreign Application Priority Data1974-04-06 DTAbstractAn apparatus for melt-spraying thermally sensitive material of low viscosity comprises a heatable multi-screw extruder having intermeshing, self-cleaning screws of specified clearance between the screws and between the screws and the extruder housing, a heatable pump for delivering molten material from the extruder to a heatable atomizer and a spray tank in which the atomizer is located for cooling and solidifying the melt-sprayed material. | |
