Patent US3414538A successfully refreshed from Google Patents.
US3414538A
Expired / Lapsed
US
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Polyolefins stabilized with a three-component system
Assignee: Hoechst AG
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Filing: 1964-08-27
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Granted: 1968-12-03
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Prinz Eberhard
- 👤 Mauz Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |