US3547872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturated polyesters containing cyclic epoxides and nucleating agents
Assignee: Hoechst AG
•
Filing: 1969-03-14
•
Granted: 1970-12-15
•
Expires: 1989-03-14
Abstract
No abstract record available.
Inventors
- 👤 Klaus Weissermel
- 👤 Rudolf Uebe
- 👤 Horst Pfister
- 👤 Ludwig Brinkmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |