Alan L King

47887982, Dec 6, 1988

May 7, 1987

7/047749

Paul J. DeFranco - Twinsburg OH
Alan G. King - Macedonia OH
Anthony S. Scheibelhoffer - Norton OH

Ferro Corporation - Cleveland OH

B24D 1100
B32B 702
C09J 702

51406

Lens grinding or polishing pads are provided, characterized by a bonding system which permits them to be quickly and easily contact-adhered to the surface of a lens finishing tool, but which pads at the same time display strong resistance to lateral displacement during use. These pads can also be readily and easily stripped from the finishing tool without deformation or damage to them.

40283259, Jun 7, 1977

Mar 7, 1975

5/556397

Alan G. King - Macedonia OH
Leon Levine - West Hartford CT

C08K 906
C08K 322

260 4215

A composite material and method of preparing same for use in prosthetic dentistry. The composition includes silica glass containing between about 8. 0-30% on a weight basis of alkaline earth metal oxides and/or alkali metal oxides in solution selected from the group consisting of calcium oxide, magnesium oxide, sodium oxide, potassium, and lithium oxide. In one form of the invention, a methacrylate resin is coupled to the silica glass by a silane mixture. The invention includes the method of forming the composite material through both a cold curing system and a heat cured system into a composite veneering and tooth material which is useful in forming crowns and other dental restorations as well as artificial teeth requiring aesthetic appearance of normal dentition. The finally formed dental material shows a high hardness factor in combination with a high wear resistance. The composite material has the capability of being highly polishable and provides for low toxicity as well as a low index which allows optical matching of the composite material to naturally formed teeth.

52446239, Sep 14, 1993

May 10, 1991

7/698569

Alan G. King - Twinsburg OH

Ferro Corporation - Cleveland OH

B29C 4310
B29C 4500
B05D 302

264510

A method for isostatic pressing of formed powder, porous powder compact, and composite intermediates and the intermediate and final products produced thereby. The method includes the steps of: (A) coating the exposed surface of the formed powder, porous powder compact, or composite intermediate with a flowable film-forming material capable of forming a solid continuous impervious flexible film; then (B) solidifying the coating of step (A) on the surface of the intermediate to form a coated intermediate; and (C) subjecting the coated intermediate of step (B) to a uniformly applied pressure exceeding atmospheric pressure to produce a flexible coating formed directly on the parts to be isopressed, permitting small parts or parts with complex shapes to be coated individually or in bulk.