Fine-particle metal powders
Patent 5407458 Issued on April 18, 1995. Estimated Expiration Date: 
April 26, 2013. 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.
April 26, 2013. 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 ReferencesProcess for producing fine powdery metal Method of producing fine particles Platelet-containing tantalum powders Method for synthesizing ultrafine powder materials Fine-grained, high-purity earth acid metal powders, a process for their production and their use Aerosol reactor production of uniform submicron powders Patent #: 4994107 InventorsAssigneeApplicationNo. 051888 filed on 04/26/1993US Classes:75/255, Loose particulate mixture (i.e., composition) containing metal particles75/245, Base metal one or more Transition metal420/427TANTALUM BASEExaminersPrimary: Wyszomierski, GeorgeAttorney, Agent or FirmForeign Patent References
International ClassC22C 027/02Foreign Application Priority Data1992-05-04 DEAbstractThis invention relates to fine-particle powders of the metals B, Al, Si, Ti, Zr, Hf, V, Nb, Ta and/or Cr which have a defined particle size of 1.0 nm to less than 3 μm. Less than 1% of the individual particles of the powder deviate by more than 40% from the average particle size, and no individual particle of the powder deviates by more than 60% from the average particle size.Other References
Field of SearchBoron(B) containing particlesLoose particulate mixture (i.e., composition) containing metal particles Base metal one or more Transition metal Base metal confined to Tungsten(W) Base metal one or more of Beryllium(Be), Magnesium(Mg), or Aluminum(Al) TITANIUM BASE ZIRCONIUM OR HAFNIUM BASE VANADIUM BASE NIOBIUM BASE TANTALUM BASE CHROMIUM BASE ALUMINUM BASE | |
