USPTO trademark record

CSTONE

Dead mark · Owner Touchstone Research Laboratory, Ltd. · Classes 1, 17

Mark details

Owner: Touchstone Research Laboratory, Ltd.
Serial number: 77276826
Registration number: 3944594
Status: CANCELLED - SECTION 8 (dead)
Classes: 1 (Chemicals), 17 (Rubber / plastics)
Filed: 2007-09-11
Registered: 2011-04-12
Goods / services: carbonaceous materials, namely, solid porous carbon and solid non-porous carbon for use in the manufacture of finished, semi-finished, and unfinished goods; semi-finished carbon in the form of a high…

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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