US3369993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Admixtures of acid of activated clay and adsorbents in the decolorization of waxes
Assignee: Sunoco Inc
•
Filing: 1965-08-31
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Granted: 1968-02-20
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Expires: 1985-08-31
Abstract
No abstract record available.
Inventors
- 👤 Ivor W Mills
- 👤 Wildon T Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:33
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/42; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2202806A
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US2346127A
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US2387171A
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US2596942A
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GB734200A
Cited
US2781301A
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US2949421A
Cited
US2985538A
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US3055791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |