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:
Feb. 28, 1995
Filed:
Dec. 09, 1993
Applicant:
Inventors:
Robert P Eckert, Hinckley, OH (US);
Evangelos G Georgakis, Altaloma, CA (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ; B22C / ;
U.S. Cl.
CPC ...
419 66 ; 419 65 ; 419 36 ; 419 38 ; 164246 ;
Abstract
A method of making an orthodontic appliance such as a bracket includes the step of forming a preform of molding material while a portion of the molding material is in contact with a textured portion of a web. The web is subsequently degraded by a thermal or solvent degrading process to leave a witness impression on the underside of the preform. The web optionally serves as a conveyor to move the preform from one processing area to another, and optionally has the appearance of a woven material such that the resulting appliance resembles a mesh base appliance having undercut regions.