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Spuncast compound contact lens
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Patent number 5,076,683
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Issue date Dec 31, 1991
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Allergan, Inc.
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Robert E. Glick
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Spin casting
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Patent number 4,424,175
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Issue date Jan 3, 1984
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Charles W. Neefe
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Soft contact lens with thin edge
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Patent number 4,153,349
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Issue date May 8, 1979
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NPD Technologies, Inc.
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Otto Wichterle
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3660545
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Patent number 3,660,545
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Issue date May 2, 1972
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3496254
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Patent number 3,496,254
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Issue date Feb 17, 1970
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3408429
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Patent number 3,408,429
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Issue date Oct 29, 1968
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL