The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 1987
Filed:
May. 19, 1986
Applicant:
Inventors:
David L Rawlings, Bayville, NY (US);
Robert E Glick, Huntington Station, NY (US);
Robert Chang, Philadelphia, PA (US);
Assignee:
International Hydron Corporation, Woodbury, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-21 ; 264311 ; 425425 ; 425434 ; 425808 ;
Abstract
An improved mold apparatus and spin casting method adapted for use in the molding of precisely configured articles, e.g., a contact lens, from a liquid polymerizable reaction mixture containing at least one volatile component is disclosed. Loss of this volatile component from the reaction mixture is prevented by providing a separate reservoir filled with a liquid volatile substance which volatilizes and fills the space above the liquid polymerization mixture.