USPTO trademark record

C-STONE

Live registered mark · Owner MIDWEST FLY ASH AND MATERIALS, INC. · Classes 19

Mark details

Owner: MIDWEST FLY ASH AND MATERIALS, INC.
Serial number: 74665571
Registration number: 2004062
Status: REGISTERED AND RENEWED
Classes: 19 (Building materials)
Filed: 1995-04-25
Registered: 1996-10-01
Goods / services: fly ash based substitute for crushed rock and gravel for use in construction

Register data indexed 2026-11-07. Bulk records trail live filings — check the official USPTO search for the latest status before filing.

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