US3546321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyether graft copolymers
Assignee: Hercules LLC
•
Filing: 1967-02-08
•
Granted: 1970-12-08
•
Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Harold Jabloner
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/38; C08F; C08F283/00; C08F283/06; C08G2/30; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2911398A
Cited
US3033841A
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DE1077430B
Cited
DE1084917B
Cited
GB978752A
Cited
US3321554A
Cited
US3249654A
Cited
US3398074A
Cited
US3418354A
Cited
US3384682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |