US3483151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for the preparation of polyesters
Assignee: Usines de Melle SA
•
Filing: 1967-05-05
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Granted: 1969-12-09
•
Expires: 1987-05-05
Abstract
No abstract record available.
Inventors
- 👤 Paul Biarnais
- 👤 Louis Alheritiere
- 👤 Georges Gobron
- 👤 Jules Mercier
- 👤 Gaston Meunier
- 👤 Rene Lemaistre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:46
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/785; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3127376A
Cited
US2988524A
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US3055869A
Cited
US3109832A
Cited
US3390965A
Cited
US3390135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |