US3661895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile fiber sizing agents
Assignee: Unilever Bestfoods North America
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Filing: 1969-10-01
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Granted: 1972-05-09
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Expires: 1989-10-01
Abstract
Abstract REACTION OF A CROSS-LINKED, THIN-BOILING STARCH WITH A POLYCARBOXYLIC ANHYDRIDE YIELDS AN EFFECTIVE WARP SIZE COMPOSITION.
Inventors
- 👤 Felix Joseph Germino
- 👤 Joseph Frank Steiskal
- 👤 Edwin Hans Christensen
- 👤 Francis Ervin Kite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:39
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11; C; C08; C08B; C08B31/00; C08B31/02; C08B31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |