3m Innovative Properties Company

Andersen Corporation

Marvin Kammin

Andrew John Ouderkirk

John D Munter

Dan Clayton

Tim Mullen

A grille attachment system is provided for releasably attaching a grille made of crisscrossing grille components to a window or door having a frame and a glazing unit. The attachment system includes grille clips on the ends of the grille components that are each movable between a first or inactive position and a second or active position in which they engage the frame of the window or door to hold the grille in place. Movement of the grille toward engagement with the glazing unit of the window or door causes the clips to move to their second positions, thereby engaging the frame and holding the grille in place. Pulling the grille away from the glazing unit causes the clips to move back to their first positions, thereby releasing the grille from the frame and the window or door.

Window and door grille attachment system

An optical body can be formed using cholesteric liquid crystal materials. At least two different coating compositions containing cholesteric liquid crystal material are coated on a substrate. At least a portion of each composition is allowed to interdiffuse to generate a change in pitch along a thickness dimension of the optical body. This optical body can be used, for example, as a reflective polarizer in an optical display.

Growing community of inventors

Minneapolis, MN, United States of America

Marvin Kammin