Bleaching and dyeing; fluid treatment and chemical modification – Nontextile – dyeing process or product – including inorganic... – Contact lens
Reexamination Certificate
2006-01-10
2008-09-09
Douyon, Lorna M. (Department: 1796)
Bleaching and dyeing; fluid treatment and chemical modification
Nontextile, dyeing process or product, including inorganic...
Contact lens
C008S509000, C008S514000, C008S515000
Reexamination Certificate
active
07422610
ABSTRACT:
In a method of coloring a dye coating-formed lens by heating, the lens is subjected to half dyeing by changing the heating temperature depending on the lens site. This dyeing method involves heating a lens having a dye coating-formed on the surface thereof in a heating furnace to diffuse a dye into the lens. This method is carried out in a heating furnace having a frame section having the shape of a cube or rectangular parallelepiped, a heating section provided within the frame section, and an insertion port for inserting the lens provided on the bottom surface of the frame section. All or a part of the lens is inserted from the insertion port into a furnace inside of the heating furnace from the lower portion of the heating furnace and heated.
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Kubodera Takaaki
Samukawa Masahiko
Douyon Lorna M.
Hoya Corporation
Khan Amina
Morrison & Foerster / LLP
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