Patent US1912167A successfully refreshed from Google Patents.
Patent US3709708A successfully refreshed from Google Patents.
US3709708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax emulsions
Assignee: Wyeth Holdings LLC
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Filing: 1970-02-16
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Granted: 1973-01-09
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Expires: 1990-02-16
Abstract
Abstract THE MANUFACTURE OF A ANIONIC WAX SIZE EMULSION CONCENTRATE WHICH CONTAINS AN ANIONIC COLLOID PROTECTOR BY ADDING A SMALL AMOUNT OF AN AQUEOUS SOLUTION OF A WATER: SOLUBLE SALT OG A POLYVALENT METAL WHICH FORMS AN INSOLUBLLE HYDROXIDE WITHIN THE RANGE OF 2 TO 10, BEFORE DURING OR AFTER THE ENULSIFICATION STEP, AND THEN PRECIPITATING AT LEAST A PART OF THE METAL OF THE ADDED SALT AS A SALT WITH SAID PROTECTIVE COLLOID.
Inventors
- 👤 E Strazdins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/60; D21H17/63; D21H17/66
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |