US3465065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of block copolymers using particular polymerization solvents
Assignee: Shell USA Inc
•
Filing: 1964-10-28
•
Granted: 1969-09-02
•
Expires: 1984-10-28
Abstract
No abstract record available.
Inventors
- 👤 Fred Dudley Moss
- 👤 Arthur R Bean Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:27
CPC Classifications
C; C08; C08F; C08F297/00; C08F297/02; C08F297/04; C08F297/046; C08G; C08G81/00; C08G81/02; C08G81/021; C08G81/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3231635A
Cited
US3390207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |