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:
Sep. 12, 1989
Filed:
Dec. 15, 1987
Applicant:
Inventors:
Paul T Ihn, North Hudson, WI (US);
Larry R Boughten, Hugo, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-11 ; 249142 ; 249160 ; 249175 ; 264-22 ; 425808 ;
Abstract
A mold and method is disclosed for the production of a lens that can be placed in or on the eye. The mold employs an inflexible ridge, preferably having a triangular cross section, on one of the mold parts. The ridge contacts the other mold part along an annular line.