Trademark Overview
On Friday, March 20, 1936, a trademark application was filed for SUPEROCK with the United States Patent and Trademark Office. The USPTO has given the SUPEROCK trademark a serial number of 71376227. The federal status of this trademark filing is EXPIRED as of Tuesday, June 10, 1997. This trademark is owned by REPUBLIC STEEL CORPORATION. The SUPEROCK trademark is filed in the Non-Metallic Building Material Products category with the following description:
BY-PRODUCTS OF BLAST FURNACES-NAMELY, CRUSHED SLAG FOR USE AS AN AGGREGATE FOR CEMENT OR CONCRETE