Accentus Medical Limited

United Kingdom

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C25D 11/26 - Anodisation of refractory metals or alloys based thereon 2
A61L 27/04 - Metals or alloys 1
A61L 27/16 - Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds 1
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1.

METAL TREATMENT

      
Document Number 02756651
Status In Force
Filing Date 2010-03-29
Open to Public Date 2010-10-07
Grant Date 2017-05-23
Owner ACCENTUS MEDICAL LIMITED (United Kingdom)
Inventor
  • Shawcross, James Timothy
  • Lewis, David Richard
  • Turner, Andrew Derek

Abstract

Metal objects are treated by anodising (P, SE) the metal object in contact with an acidic solution, and then subjecting the anodised metal object to a reversed voltage (VR). The anodising is performed in two stages, firstly to passivate (P) with the formation of a surface layer, and secondly to form pits in this surface layer (SE). The second stage (SE) of anodising is performed at a lower voltage than the first stage (P). After the reversed voltage step (VR) the metal object is then contacted with a biocidal metal-containing solution. Biocidal metal is absorbed into the surface of the metal object, resulting in improved biocidal properties. The lower voltage of the second stage anodising (SE) results in reduced processing time.

IPC Classes  ?

  • C25D 11/26 - Anodisation of refractory metals or alloys based thereon
  • A61L 27/04 - Metals or alloys

2.

METHOD OF MANUFACTURING METAL WITH BIOCIDAL PROPERTIES

      
Document Number 02702119
Status In Force
Filing Date 2008-10-03
Open to Public Date 2009-04-09
Grant Date 2017-03-28
Owner ACCENTUS MEDICAL LIMITED (United Kingdom)
Inventor
  • Agg, Philip James
  • Shawcross, James Timothy
  • Pickford, Martin Edward Lee
  • Turner, Andrew Derek
  • Lewis, David Richard

Abstract

Metal objects are treated by anodising the metal object in contact with an acidic solution, and then subjecting the anodised metal object to a reversed voltage (compared to the anodising voltage). The thus- treated metal object is then contacted with a biocidal metal-containing solution. Biocidal metal is deposited on the surface of the metal object, resulting in improved biocidal properties.

IPC Classes  ?

  • C25D 11/26 - Anodisation of refractory metals or alloys based thereon
  • A61L 27/16 - Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds