| OPAL BLACK MICRO CHEMICAL INDUSTRIES, INC.
73087703 19 May 1976 | on 05 Oct 1998 | RICE HULL ASH ESSENTIALLY A SILICA COMPOUND FOR USE IN THE PRODUCTION ... Class 001 Class 001 Chemical Products THE WORD "BLACK" IS DISCLAIMED APART FROM THE MARK AS SHOWN. | | | MICRO-CRETE MICRO CHEMICAL INDUSTRIES, INC.
73087702 19 May 1976 | on 06 Oct 1997 | ACID-RESISTANT CEMENT,ACID-RESISTANT CEMENT Class 019 Class 019 Non-Metallic Building Material Products ACID-RESISTANT CEMENT | | | OPAL WHITE MICRO CHEMICAL INDUSTRIES, INC.
73157497 03 Feb 1978 | on 15 Nov 1985 | RICE HULL ASH, ESSENTIALLY A SILICA COMPOUND FOR USE IN THE PRODUCTION... Class 001 Class 001 Chemical Products RICE HULL ASH, ESSENTIALLY A SILICA COMPOUND FOR USE IN THE PRODUCTION OF SYNTHETIC RUBBER, AS A CATALYST IN REFINERY MARKETS, AND AS A FILTER-AID FOR CLARIFYING WATER FOR INDUSTRIAL USE | |