Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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US Patent 6340446 - Nickel-free white copper alloy
US Patent Issued on January 22, 2002
Estimated Patent Expiration Date:
April 14, 2020Estimated 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.
Estimated Patent Expiration Date:
April 14, 2020Estimated 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.AbstractA nickel-free white copper alloy represented by the general formula: Cua Znb Mnc Ald or Cua Znb Mnc Ald Xe, wherein X is at least one element selected from the group consisting of Si, Ti and Cr; b, c, d and e are 0.5ࣘb<5, 7ࣘcࣘ17, 0.5ࣘdࣘ4 and 0<eࣘ0.3 in terms of % by weight; a is the balance, the alloy incidentally including unavoidable elements. The alloy is free from allergic problems, which may be caused by nickel, and has excellent strength, hardness, ductility, workability and corrosion resistance, suitable for use in elements, sliders, stoppers or the like for slide fasteners, or accessories such as metallic buttons, fasteners or the like for clothes. | InventorsAssigneeApplicationNo. 549541 filed on 04/14/2000US Classes:420/480, Manganese containing148/434, Zinc containing148/436, Aluminum containing420/482, Manganese containing420/489Aluminum, gallium, indium, or thallium containingField of Search420/480, Manganese containing420/482, Manganese containing420/489, Aluminum, gallium, indium, or thallium containing148/434, Zinc containing148/436Aluminum containingExaminersPrimary: Yee, DeborahAttorney, Agent or FirmForeign Patent References
International ClassC22C 009/05Foreign Application Priority Data1999-04-16 JP |
