Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Rotational molding
Patent
1982-09-13
1983-11-22
Lowe, James B.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Rotational molding
264 25, 264311, 425808, B29D 1100
Patent
active
044168373
ABSTRACT:
A simplified method of making spin cast contact lenses having front and back aspheric surfaces and no effective refractive aspherosity when in place on a spherical cornea.
REFERENCES:
patent: 3010153 (1961-11-01), Bittner
patent: 3408429 (1968-10-01), Wichterle
patent: 3660545 (1972-05-01), Wichterle
patent: 3691263 (1972-09-01), Stoy et al.
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