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US3442859A
Expired / Lapsed
US
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Condensates of sulfonated formaldehyde-mixed phenols condensates with formaldehyde and a phenol
Assignee: Diamond Shamrock Corp
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Filing: 1965-08-30
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Granted: 1969-05-06
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Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Lipowski
- 👤 James M Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:00
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/18; C14C3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2179038A
Cited
DE1048925B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |