Ranki Markus K. T.
Ranson John
Rao Burrasheshagiri
Rapp Josef
Ratner Felix A.
Rawles William T.
Rawlings Robert K.
Raymond Hubert Saint
Raymond Michel
Readal John P.
Rebuschat Karl
Reering Jan G.
Reese, deceased Thurston F.
Reese, executor by John F.
Reese, executrix by Alma C.
Reeve-Parker Michael C.
Refractechnik Holding GmbH
Refractory Intellectual Property GmbH & Co. KG
Refractory Service Corporation
Refractory Services Corp.