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US3499852A
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US
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Coating compositions containing polyol crosslinking agent and urethane prepolymers endblocked with ethylenic groups
Assignee: NL SPENCER KELLOG Inc
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Filing: 1967-02-10
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Granted: 1970-03-10
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Expires: 1987-02-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Schroeder
- 👤 Arthur J Krawczyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:34
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA609570A
Cited
US2801990A
Cited
GB820005A
Cited
US3012993A
Cited
US2958704A
Cited
US3100759A
Cited
US3297745A
Cited
US3371056A
Cited
US3425988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |