US3120547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of highmoleuclar compounds containing epoxide groups
Assignee: Dehydag Deutsche Hydrierwerke GmbH
•
Filing: 1958-06-25
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Granted: 1964-02-04
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Expires: 1978-06-25
Abstract
No abstract record available.
Inventors
- 👤 Dieckelmann Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38; C07D303/40; C07D303/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2801253A
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US2810732A
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US2873283A
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US2997484A
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US2377038A
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US2485160A
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US2976265A
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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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |