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. 13, 2005
Filed:
Jun. 09, 2004
Applicants:
Ming YE, Fort Worth, TX (US);
Xiaoxiao Zhang, Fort Worth, TX (US);
Inventors:
Ming Ye, Fort Worth, TX (US);
Xiaoxiao Zhang, Fort Worth, TX (US);
Assignee:
Novartis AG, Basel, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02C007/02 ; B29D011/00 ;
U.S. Cl.
CPC ...
Abstract
A method of producing a master cast used in making a contact lens mold, comprising the steps of: rotating a master cast blank, having an outer surface, about a first rotational axis and cutting at lest one first surface onto the outer surface of the master cast blank; and rotating the master cast blank about a plurality of secondary rotational axes, each secondary rotational axis being different from the first rotational axis, and cutting a portion of a ridge-off surface from the outer surface of the master cast blank while rotating at each secondary rotational axis.