Patent US3132066A successfully refreshed from Google Patents.
US3132066A
Expired / Lapsed
US
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Process of adding starch phosphates to paper pulp containing titanium dioxide to improve retention thereof
Assignee: Unilever Bestfoods North America
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Filing: 1961-05-04
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Granted: 1964-05-05
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Expires: 1981-05-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Kerr
- 👤 Jr Frank C Cleveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:02
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/24; D21H17/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2171796A
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US2337458A
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US2590912A
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US2692824A
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US2680072A
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US2884412A
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US2801242A
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US2884413A
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US2993041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |