US3487037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of graft copolymers of dienes on vinyl-type polymers
Assignee: Pechiney SA
•
Filing: 1963-07-01
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Granted: 1969-12-30
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Jean-Marie Michel
- 👤 Jean Peyrade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:57
CPC Classifications
C; C08; C08F; C08F259/00; C08F259/02; C08F259/04; C01; C01B; C01B25/00; C08F291/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2877200A
Cited
GB819651A
Cited
US2996469A
Cited
US3327022A
Cited
GB873948A
Cited
US3231410A
Cited
US3222423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |