US3451986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the mass polymerisation of aryl vinyl compounds
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1965-05-18
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Granted: 1969-06-24
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Expires: 1985-05-18
Abstract
No abstract record available.
Inventors
- 👤 Bernard Metais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:56
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/04; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; B01J19/24; B01J19/2415; B01J19/243; C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; F28D7/0066; F28D7/0083; B01J2219/00; B01J2219/00002; B01J2219/00018; B01J2219/0002; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00063; B01J2219/00074; B01J2219/00076; B01J2219/00083; B01J2219/00087; B01J2219/00094; Y; Y10; Y10S; Y10S526/00; Y10S526/918
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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |