Richard H Fischer

US Patent:

20040246745, Dec 9, 2004

Filed:

Jun 4, 2003

Appl. No.:

10/454045

Inventors:

Geoffrey Morris - White Bear Lake MN, US
Richard Fischer - Hudson WI, US
Warren Ketola - St. Paul MN, US
Bradley Guth - Hudson WI, US

Assignee:

3M Innovative Properties Company

International Classification:

F21V021/30

US Classification:

362/583000, 362/257000

Abstract:

The invention relates to optical filters comprising an opacified portion. The optical filters are preferably suitable for use in illuminators for weathering devices.

US Patent:

20050075471, Apr 7, 2005

Filed:

Oct 1, 2004

Appl. No.:

10/957355

Inventors:

Wayne Fan - Cottage Grove MN, US
Nathaniel Langford - Somerset WI, US
Richard Fischer - Hudson WI, US
Amy Barnes - St. Paul MN, US

International Classification:

C08G018/00

US Classification:

528044000

Abstract:

A chemical composition comprises one or more urethane oligomers of at least two polymerized units selected from the group consisting of fluorine-containing urethane oligomers and long-chain hydrocarbon-containing urethane oligomers, wherein said oligomers comprise the reaction product of (a) one or more polyfunctional isocyanate compounds, (b) one or more polyols, (c) one or more monoalcohols selected from the group consisting of fluorocarbon monoalcohols, optionally substituted long-chain hydrocarbon monoalcohols, and mixtures thereof, (d) one or more silanes, and (e) one or more stabilizers comprising one or more reactive groups.