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Patent US3527736A successfully refreshed from Google Patents.
US3527736A
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Process for the preparation of synthetic diene polymers modified by reaction with certain anhydrides or imides in the presence of mono-olefins
Assignee: Shell USA Inc
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Filing: 1968-04-09
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Granted: 1970-09-08
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Expires: 1988-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jan W Aeyelts Averink
- 👤 Petrus J Kok
- 👤 David E Knibbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:02
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/28; C08F; C08F279/00; C08F279/02; C08K; C08K3/00; C08K3/01; C08K3/013; H; H10; H10N; H10N97/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2824859A
Cited
GB1066873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |