Patent US3307618A successfully refreshed from Google Patents.
Patent US3661861A successfully refreshed from Google Patents.
US3661861A
Expired / Lapsed
US
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Protective coating which is produced by reacting moisture with a prepolymer made by reacting an oxazoline with a diisocyanate
Assignee: Commercial Solvents Corp
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Filing: 1970-05-12
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Granted: 1972-05-09
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Expires: 1990-05-12
Abstract
Abstract A PREPOLYMER COMPOUND CONSISTING OF THE REACTION PRODUCT OF A MONO-,BIS-OR TRIS-OXAZOLINE WITH TOLUENE DIISOCYANATE DISSOLVED IN A SOLVENT THEREBY PROVIDING AN AIR-DRYING COATING MATERIAL WHICH FORMS A SMOOTH, CONTINUOUS FILM BY REACTION WITH ATMOSPHERIC MOISTURE.
Inventors
- 👤 Jerry Hoyt Hunsucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3844
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |