Witt Alvin E, Breault Homer: Dimensionally-stable, resilient floor tile. Atlantic Richfield Company, Ewbank John R, September 2, 1975: US3902293 (170 worldwide citation)

A multilayer floor tile is so dimensionally stable that large gymnasiums can be floored with it while achieving sufficient resilience to be suitable as a basketball floor. The bottom layer imparts durable resiliency because it is a sheet molded from a tangled network of thermoplastic fibers containi ...

Witt Alvin E, Humphreys Matthew F, Tomasko Joseph E: Coated synthetic resin board tiles. Witt Alvin E, RENZ Eugene E Jr, May 22, 1998: WO/1998/021026

A method of making a tile utilizing a synthetic resin in combination with an upper veneer layer so as to provide an environmentally superior floor tile is disclosed. A resin admixture is prepared through a metering device while simultaneously adding catalyst from a catalyst source so that the catali ...