Ornamental part for watches and method of producing the same
Patent 4226082 Issued on October 7, 1980. Estimated Expiration Date: 
September 25, 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 25, 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 1904241 3108900 3669695 3684463 3690062 3772058 3813227 3841848 3900592 Coated metal product Patent #: 3953178 InventorApplicationNo. 05/945292 filed on 09/25/1978US Classes:368/285, With ornamentation427/530, Inorganic metal compound present in plating or implanted material (e.g., nitrides, carbides, borides, etc.)427/569, Plasma (e.g., corona, glow discharge, cold plasma, etc.)428/627, Boride, carbide or nitride component428/927, Decorative informative968/365, Wear resistant cases [G04G 37/22D]968/723For components of the means protecting the mechanism against external influences, e.g., cases, etc. [G04D 3/00D20]ExaminersPrimary: Newsome, John H.Attorney, Agent or FirmInternational ClassesC23C 14/06 (20060101)G04B 37/00 (20060101) G04D 3/00 (20060101) G04B 37/22 (20060101) Foreign Application Priority Data1976-06-07 JPAbstractAn ornamental part for watches such as a watch case having a composite coating layer consisting essentially of titanium and titanium nitride, the ratio of the two components being varied in the direction of the thickness of the layer. The composite coating may be formed by the physical vapor deposition method in which the titanium in the vapor phase is reacted with nitrogen under a glow-discharge condition. The coating thus formed has a gold color and excellent physical and chemical properties. | |
