US3468975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of elastomeric block copolymers containing polyamide and polyester segments
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-06-30
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Granted: 1969-09-23
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Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick Keith Duxbury
- 👤 John David Garforth
- 👤 Peter Mcneeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:01
CPC Classifications
C; C08; C08L; C08L67/00; C08G; C08G69/00; C08G69/44; C08L67/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB610140A
Cited
US3382305A
Cited
US3378602A
Cited
US3369057A
Cited
US3386967A
Cited
US3378055A
Cited
US3378056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |