Back to results
US 10,450,214 B2Granted
High optical quality glass tubing and method of making
AssigneeCorning Incorporated
InventorsDavid John McEnroe, Aniello Mario Palumbo
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeCorning Incorporated
InventorsDavid John McEnroe, Aniello Mario Palumbo
Estimating the term…
A laminated or single layer glass cylinder and its method of making are disclosed. The laminated cylinder glass is a precursor component to enable making subsequent drawn tubing having high optical quality. The laminated cylinder glass may comprise a first layer of glass as a clad glass and a second layer of glass as a core glass. The second layer of glass may be bound to the first layer of glass. The second layer may have a higher CTE from about 5×10−7/° C. to about 100×10−7/° C. than the first layer of glass. The first layer and second layer of glass may have different softening points within about 200° C. of each other. In some embodiments, the first layer and second layer of glass may have different softening points from about 50° C. to about 200° C. of each other.
A method for producing a high optical quality hollow cylinder of glass tubing, comprising:
Dependencies are inferred from the claim text.