USPTO trademark record

DUOLASE

Dead mark · Owner DIAMOND SHAMROCK CORPORATION · Classes 1

Mark details

Owner: DIAMOND SHAMROCK CORPORATION
Serial number: 73058765
Registration number: 1037149
Status: EXPIRED (dead)
Classes: 1 (Chemicals)
Filed: 1975-07-25
Registered: 1976-04-06
Goods / services: IMMOBILIZED ENZYME PREPARATIONS FOR INDUSTRIAL AND TECHNICAL USE

Register data as of 2026-11-08. Records can trail live filings — check the official USPTO search for the latest status before filing.

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