GC Corporation
58 live US trademarks, filing since 1980. 3 new applications filed this year.
Marks held on the register, by filing date. 2026 is year to date.
A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.
What GC Corporation filed most recently.
| Mark | Class | Filed | Basis | Status | Serial |
|---|---|---|---|---|---|
| WATER‐FREE | 5 | Aug 17, 2026 | in use | pending | 79460678 |
| SI SILANE COUPLING AGENT | 5 | Aug 17, 2026 | in use | pending | 79460679 |
| EVERX ONE | 5 | Aug 14, 2026 | — | pending | 50051942 |
| G-BOND UNIVERSAL | 5 | Dec 5, 2024 | — | registered Jan 20 | 79415155 |
| G-ÆNIAL UNIVERSAL | 5 | Dec 5, 2024 | — | registered Jan 20 | 79415156 |
| G-CEM UNIVERSAL | 5 | Dec 5, 2024 | — | registered Jan 20 | 79415157 |
| BIOUNION | 3, 5 | Oct 31, 2024 | — | published | 98831143 |
| CAREDYNE | 3, 5, 21 | Oct 31, 2024 | — | registered Oct 14 | 98831327 |
| CYTRANS | 10 | Oct 15, 2024 | — | registered Aug 4 | 79413760 |
| 4DR TECHNOLOGY | 10 | May 10, 2023 | — | published | 97929329 |
Registration starts the maintenance clock: a Section 8 declaration is due between years 5 and 6.
A filing missed by the due date enters a six-month grace period, then the registration cancels.
About GC Corporation trademarks.
How many trademarks does GC Corporation have?
58 live US trademarks as of October 23, 2026: 53 registered and 5 pending applications. 3 were filed in 2026 so far.
What does GC Corporation sell, according to its trademarks?
Mostly pharmaceuticals (Class 5, 45 live marks). Also medical devices (Class 10) and cosmetics & cleaning (Class 3).
Who owns the EXAFLEX trademark?
EXAFLEX is owned by GC Corporation. It was registered on August 4, 1981 (Reg. No. 1163378) and is live. The same owner holds 57 other live US marks.
When did GC Corporation first file a trademark?
Its oldest live US filing dates from 1980: EXAFLEX, filed January 3, 1980.
Know the morning after GC Corporation files.
Watch this company in Thorgate and get an alert for every new application, registration, publication and lapse, with the opposition deadline already worked out. Or monitor your own marks for conflicts with theirs.
Data: USPTO trademark bulk files, processed nightly by Thorgate. Last rebuilt October 23, 2026. Counts cover the US federal register only, not state or foreign marks. Owner names are shown as recorded by the USPTO. This page reports public-record facts and dates and is not legal advice. For the official record of any mark, follow its serial number to USPTO TSDR.