Patent US3491067A successfully refreshed from Google Patents.
US3491067A
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US
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Alkylolated polyurethane resins derived from hydroxy ethyl carbamate and their use
Assignee: Diamond Shamrock Corp
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Filing: 1967-07-12
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Granted: 1970-01-20
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Expires: 1987-07-12
Abstract
No abstract record available.
Inventors
- 👤 Lucien Sellet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:50
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/568; B; B23; B23C; B23C3/00; B23C3/02; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3823; C08G18/3831; C08G18/83; C08G18/84; C08K; C08K13/00; C08K13/02; C08L; C08L75/00; C08L75/04; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/303752; Y10T409/303808; Y10T409/304536; Y10T409/305544; Y10T409/305656; Y10T409/305768; Y10T82/00; Y10T82/25; Y10T82/2514
Claims Analysis
Total Claims: 0
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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) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |