USRE27432E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent cleaning system
Assignee: —
•
Filing: 1970-07-02
•
Granted: 1972-07-11
•
Expires: 1990-07-02
Abstract
Abstract PROCESS FOR REMOVING POLYMERIC MATERIALS FROM PROCESSING EQUIPMENT INVOLVING CONTACTING SUCH MATERIALS WITH A TETRAHYDROFURAN SOLVENT WHILE AGITATING SO AS TO EFFECT SOLUTION OF THE POLYMERIC MATERIALS IN THE SOLVENT.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:31
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |