USPTO serial 72393799
PERMAPHASE
Reviewed by CopyMark Law Group
Reg. 0932579Status 900
- Filing date
- Status date
- Registration date
- Apr 18, 1972
- Examiner
- —
- Law office
- Historical data usage
What this means
This page summarizes the public USPTO record for this serial number, including owners, goods and services, and prosecution history.
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Owner
Goods and services
| Class | Description | Status | First use |
|---|---|---|---|
| 031 | SUPERFICIALLY POROUS SPHERICAL PARTICLES FOR USE AS CHROMATOGRAPHIC COLUMN PACKING MATERIAL | EXPIRED | Apr 6, 1971 |
Related trademarks
CopyMark links this record to cited §2(d) serials, the owner's other marks, Nice classes, similar mark names, and recently changed USPTO applications.
Prosecution history
| Date | Code | Event | What it means |
|---|---|---|---|
| Jan 25, 1993 | EXRG | EXPIRED SEC. 9 | — |
| Apr 11, 1978 | C15A | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. | — |