Patent US3408319A successfully refreshed from Google Patents.
US3408319A
Expired / Lapsed
US
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Tanning compositions comprising aqueous solutions of unsaturated acid-unsaturated sulfated oil copolymers
Assignee: Rohm and Haas Co
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Filing: 1964-12-08
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Granted: 1968-10-29
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Expires: 1984-12-08
Abstract
No abstract record available.
Inventors
- 👤 William J Rau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:00
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/22; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F28/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2205883A
Cited
US2280310A
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US2452536A
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US3291558A
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US3231420A
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US3245832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |