Patent US2744841A successfully refreshed from Google Patents.
US2744841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing polyethylene from metal surfaces
Assignee: Standard Oil Co
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Filing: 1955-05-20
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Granted: 1956-05-08
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Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
- 👤 Cassis Frank
- 👤 Charles R Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:27
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/005; B; B29; B29C; B29C48/00; B29C48/03; B29C48/25; B29C48/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD OF REMOVING POLYETHYLENE RESIN FROM METAL SURFACES COMPRISING CONTACTING SAID POLYETHYLENE RESIN ON SAID SURFACE WITH PENTAERYTHRITOL AT A TEMPERATURE ABOVE THE SOFTENING POINT OF SAID PENTAERYTHRITOL AND BELOW THE MELTING POINT OF SAID PENTAERYTHRITOL AND WITHDRAWING SAID POLYETHYLENE AND SAID PENTAERYTHRITOL FROM SAID METAL SURFACE.
Claim 2
Independent Claim
48 words
THE METHOD OF REMOVING POLYETHYLENE RESIN FROM METAL SURFACES COMPRISING CONTACTING SAID POLYETHYLENE RESIN ON SAID SURFACE WITH PENTAERYTHRITOL AT A TEMPERATURE ABOVE THE SOFTENING POINT OF SAID PENTAERYTHRITOL AND BELOW THE MELTING POINT OF SAID PENTAERYTHRITOL AND WITHDRAWING SAID POLYETHYLENE AND SAID PENTAERYTHRITOL FROM SAID METAL SURFACE.
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |