Patent US3470583A successfully refreshed from Google Patents.
US3470583A
Expired / Lapsed
US
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Assignee: Celanese Corp
•
Filing: 1964-07-02
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Granted: 1969-10-07
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Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Russell Owens Denyes
- 👤 Joseph Germano Santangelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:49
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1972922A
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US1935203A
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US1977611A
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US2265984A
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US2694915A
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DE916727C
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US2811409A
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US3035396A
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US2988867A
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US3107990A
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US3083084A
Cited
US3094374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |