3M Innovative Properties Company

Minnesota Mining and Manufacturing Company

Jeffrey Bruce Hill

Douglas Scott Dunn

Andrew John Ouderkirk

Daniel P Stubbs

Robert S Jackson

Peter A Stark

Rajdeep S Kalgutkar

Jeffrey M Florczak

Joan V Brennan

Harvey Kalweit

Robert Leland Wee Smithson

Stephen Paul Le Blanc

Hardenable and hardened dental compositions, and articles including such hardenable and hardened compositions, are provided. The hardenable dental compositions include a thermally labile component including one or more thermally labile groups. Upon heating, the hardened compositions are useful, for example, for reducing the bond strength of orthodontic appliances adhered to tooth structures with the hardened compositions.

Dental compositions including a thermally labile component, and the use thereof

The invention relates to inducing a refractive index change in the glass substrate of a polymer coated optical device by using a high numeric aperture lens to focus a femtosecond laser beam through the polymeric coating to the substrate without damaging the polymeric coating.

Index modulation in glass using a femtosecond laser

Method of making a lens on an optical fiber or waveguide using a femtosecond laser. The lens may be further smoothed by the application of heat.

Optical fiber or waveguide lens

The present invention includes a method of creating a shaped image in a workpiece using a flashlamp, the method comprising positioning a template proximate the workpiece and directing radiation emitted by the flashlamp during a short pulse of less than approximately 100 .mu.sec through the template toward the workpiece.

Ablative flashlamp imaging

A system for prolonging the useful life of a mask while ablating a pattern into a workpiece. The system includes a workpiece, a debris-blocking layer thereon, a laser directed toward the workpiece, and a mask provided between the laser and debris-blocking layer. The workpiece may be a data storage disk comprising a substrate and a magnetic coating thereon. The laser may be an ultraviolet laser and the debris-blocking layer should be transparent to the light emitted by the laser. The pattern may include concentric or spiral optical servo tracks in the magnetic coating. The debris-blocking layer minimizes degradation of the mask, thereby minimizing the need to clean the mask and prolonging the useful life of the mask.

System for ablative imaging by proximity lithography

The present invention includes a method of creating a shaped image in a workpiece using a high energy source, with the method comprising positioning a layer proximate the workpiece such that the layer prevents debris from the workpiece from dispersing, and directing radiation from the high energy source through the layer to the workpiece, the layer substantially transparent to radiation emitted by the high energy source such that the high energy source is capable of forming the shaped image.

Growing community of inventors

Stillwater, MN, United States of America

Jeffrey Bruce Hill