US3600348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition for wooden concrete forms and method of preparing wooden forms having improved concrete anti-sticking characteristics
Assignee: Gulf Research and Development Co
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Filing: 1969-09-24
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Granted: 1971-08-17
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Expires: 1989-09-24
Abstract
Abstract WOODEN CONCRETE FORMS HAVING IMPROVED CONCRETE ANTISTICKING CHARACTERISTICS ARE OBTAINED BY APPLYING TO THE CONCRETE-CONTACTING SURFACES OF THE FORMS A COATING COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (1) A HYDROCARBON RESIN DERIVED FROM A CYCLIC OLEFIN SUCH AS A RESSIN OF DICYCLOPENTADIENE; (2) MINERAL OIL HAVING A VISCOSITY OF ABOUT 100 TO ABOUT 1000 SUS AT 100*F.; (3) PARAFFIN WAX HAVING A MELTING POINT OF ABOUT 120* TO ABOUT 155*F.; AND (4) A HYDROCARBON DISTILLATE SOLVENT, E.G., STODDARD SOLVENT, KEROSENE, ETC.
Inventors
- 👤 Earl L Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:27
CPC Classifications
C; C09; C09D; C09D145/00; B; B28; B28B; B28B7/00; B28B7/38; B28B7/384; C08; C08L; C08L47/00; C09D157/00; C09D157/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |