US3375284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying and decolorizing alkylphenol-ethylene oxide adducts
Assignee: Union Carbide Corp
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Filing: 1967-08-09
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Granted: 1968-03-26
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Expires: 1987-08-09
Abstract
No abstract record available.
Inventors
- 👤 Harry T Zika
- 👤 Jr Louis F Theiling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:16
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/007; C07; C07C; C07C41/00; C07C41/01; C07C41/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3168569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |