Brass material and a process for the preparation thereof
Patent 4226621 Issued on October 7, 1980. Estimated Expiration Date: 
September 11, 1998. 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.
September 11, 1998. 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 2050601 2145065 3046166 3615922 Method of imparting increased dezincification resistance to brass Patent #: 3963526 InventorAssigneeApplicationNo. 05/941131 filed on 09/11/1978US Classes:148/433, Tin containing148/413, Zinc containing420/902SUPERPLASTICExaminersPrimary: Rutledge, L. DewayneAssistant: Skiff, Peter K. Attorney, Agent or FirmInternational ClassesC22C 9/04 (20060101)C22F 1/08 (20060101) Foreign Application Priority Data1977-09-17 DEAbstractA brass material and a process for the preparation thereof, which comprises an alloy of 61 to 65% by weight of copper with the remainder being zinc; the material evidencing a structure in which the recrystallized phases and 댡 are present in a discrete fine mixture having grain sizes of less than 5 μm. The component of the 댡 phase comprises at least 10% of the structure and is arranged in the form of discrete particles in the grain boundaries of the phase. | |
