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:
Dec. 19, 1989
Filed:
May. 09, 1988
Thomas T Bryan, St. Paul, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
When a hand-held visible-light curing unit is used in air to cure dental restorative material, a thin layer of soft, uncured surface material ordinarily remains and is removed by grinding. In the invention, the surface of the restorative material is fully cured by the simple expedient of using a hand-held light curing unit whose lightguide has a hollow tube having at least one orifice that is substantially colinear with the lightguide. An inert gas such as nitrogen is gently blown through the orifice and across the surface of the restorative material while the material is being cured by light from the light curing unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile