Method for molding a hydrophilic contact lens

Details Method for molding a hydrophilic contact lens Method for molding a hydrophilic contact lens

1992-11-04

1993-12-21

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 22, 264 26, B29D 1100

Patent

active

052718743

ABSTRACT:
A process for molding hydrophilic contact lenses comprising the steps of providing lens forming liquid comprising hydrophilic monomer mixed with solvent and polymerizing the liquid between two mold halves. The improvement comprises substantially removing the solvent by evaporation at temperature no higher than about 100 degrees C.

REFERENCES:
patent: 3532679 (1970-10-01), Steckler
patent: 3660545 (1972-05-01), Wichterle
patent: 3948841 (1976-04-01), Dusek
patent: 4035330 (1977-07-01), Schultz
patent: 4173606 (1979-11-01), Stoy et al.
patent: 4405773 (1983-09-01), Loshaek et al.
patent: 4495313 (1985-01-01), Larsen
patent: 4582402 (1986-04-01), Knapp
patent: 4668240 (1987-05-01), Loshaek
patent: 4680336 (1987-07-01), Larsen et al.
patent: 4811662 (1989-03-01), Sterman
patent: 4872405 (1989-10-01), Sterman
patent: 4874562 (1989-10-01), Hyon et al.
patent: 4889664 (1989-12-01), Kindt-Larsen et al.
Refojo, Journal of Polymer Science: Part A-1, vol. 5, 3103-3113 (1967).

Affiliated with

Also associated with

Rating

Method for molding a hydrophilic contact lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for molding a hydrophilic contact lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for molding a hydrophilic contact lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-306963