US3431323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated block copolymers of butadiene and a monovinyl aryl hydrocarbon
Assignee: Shell USA Inc
•
Filing: 1964-01-20
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Granted: 1969-03-04
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Robert C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:21
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C08L53/025; C08F; C08F297/00; C08F297/02; C08F297/04; C08F8/00; C08F8/04; Y; Y10; Y10S; Y10S525/00; Y10S525/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3149182A
Cited
US3140278A
Cited
US3299174A
Cited
US3333024A
Cited
US3239478A
Cited
US3251905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |