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US3458481A
Expired / Lapsed
US
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Process for the preparation of high molecular weight cross-linked polyamides
Assignee: Bayer AG
•
Filing: 1965-09-27
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Granted: 1969-07-29
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Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Ernst Reichold
- 👤 Walter Bockmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2430859A
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US2631993A
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US3155637A
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GB880761A
Cited
US3203934A
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US3299009A
Cited
US3294755A
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US3329657A
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GB1024407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |