US3402149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polyureapolyurethane molding powders
Assignee: ATK Launch Systems LLC
•
Filing: 1964-12-04
•
Granted: 1968-09-17
•
Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Fred L Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:43
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G2140/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2801990A
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US3076770A
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US3213049A
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US3248259A
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US3297649A
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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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |