US3361784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer stabilization
Assignee: Shell USA Inc
•
Filing: 1964-10-09
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Granted: 1968-01-02
•
Expires: 1984-10-09
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Leu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:50
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/3205; C07F9/3211; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/50; C07F9/53; C07F9/5304; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C10M2223/00; C10M2223/06; C10M2223/061; C10M2223/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3044981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |