Patent US3481989A successfully refreshed from Google Patents.
US3481989A
Expired / Lapsed
US
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Substitution of aromatic compounds
Assignee: Universal Oil Products Co
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Filing: 1967-06-01
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Granted: 1969-12-02
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Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Jerome A Vesely
- 👤 Louis Schmerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:18
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/60; C07C2/00; C07C2/86; C07C2/862; C07C37/11; C07C41/00; C07C41/01; C07C41/18; C07C41/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |