Patent US3589856A successfully refreshed from Google Patents.
US3589856A
Expired / Lapsed
US
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Polymerization of ethylenically unsaturated materials within protein products
Assignee: Gillette Co LLC
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Filing: 1968-01-11
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Granted: 1971-06-29
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Expires: 1988-01-11
Abstract
Abstract POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL WITHIN PROTEIN PRODUCTS IN FACILITATED BY INTRODUCING A MERCAPTOCARBOXYLIC ACID INTO THE AQUEOUS POLYMERIZATION MEDIUM CONTAINING A WATER-SOLUBLE PERSULFATE INITIATOR AT A PH OF 1 TO 1.4. IF TRIS(HYDROXYMETHYL) PHOSPHINE OR TETRAKIS-(HYDROXYMETHYL)PHOSPHONIUM CHLORIDE IS ALSO PRESENT THE PH MAY RANGE FROM 1 TO 3.
Inventors
- 👤 Leszek J Wolfram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:19
CPC Classifications
C; C08; C08F; C08F289/00
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |