Patent US3515769A successfully refreshed from Google Patents.
US3515769A
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US
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Polymerization process
Assignee: Universal Oil Products Co
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Filing: 1967-06-30
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Granted: 1970-06-02
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Expires: 1987-06-30
Abstract
No abstract record available.
Inventors
- 👤 Norman A Fishel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:35
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01J29/00; B01J29/04; B01J29/06; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/12; C07C2/14; C07C2/20; C07C2/22; B01J2229/00; B01J2229/30; B01J2229/42; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/125; C07C2529/00; C07C2529/04; C07C2529/06; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3236762A
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US3104270A
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US3178365A
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US3322848A
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US3325465A
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US3426089A
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US3428704A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |