Optical waveguides – Optical transmission cable – Ribbon cable
Reexamination Certificate
2009-04-07
2010-10-26
Peace, Rhonda S (Department: 2874)
Optical waveguides
Optical transmission cable
Ribbon cable
C385S100000
Reexamination Certificate
active
07822307
ABSTRACT:
When a glass fiber and an inner fiber coating layer are to be attached to a connector by removing an outer fiber coating layer while leaving the inner fiber coating layer as it is, a collective coating and the outer fiber coating layer can be removed at a stretch so that the inner fiber coating layer can easily and satisfactorily be exposed. In the ultraviolet curable resin coating layer of a coated optical fiber17of an optical fiber ribbon11for wiring of equipment, the inner fiber coating layer15has a Young's modulus of 600 MPa to 1000 MPa, and the outer fiber coating layer16has a Young's modulus of 10 MPa to 300 MPa. The material of the outer fiber coating layer16is made by mixing 100 weight parts of base resin, 1-30 weight parts of silicone-based additive, and 0.5 to 40 weight parts of long chain fatty acid ester compound, wherein the base resin is a material made of a urethane metha acrylate oligomer, a mono-functional or multi-functional reactive dilution monomer, and an optical initiator.
REFERENCES:
patent: 7135229 (2006-11-01), Tortorello et al.
patent: 2002/0154873 (2002-10-01), Sheu
patent: 2005/0013573 (2005-01-01), Lochkovic et al.
patent: 02-151821 (1990-06-01), None
patent: 2003-095706 (2003-04-01), None
Haruna Tetsuya
Hattori Tomoyuki
Oishi Kazumasa
Saito Kazuto
Sakurai Wataru
McDermott Will & Emery LLP
Peace Rhonda S
Sumitomo Electric Industries Ltd.
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