US2809121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc stearate composition
Assignee: Wyeth Holdings LLC
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Filing: 1955-09-07
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Granted: 1957-10-08
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Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Davis
- 👤 Robert W Stafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
C; C07; C07C; C07C53/00; C07C53/126; C09; C09D; C09D7/00; C09D7/40; C09D7/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A ZINC STEARATE COMPOSITION COMPOSED OF ZINC SALTS OF A MIXTURE OF ABOUT 70-97% BY WEIGHT OF FATTY ACIDS OF 14-22 CARBON ATOMS AND 3-30% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF PHTHALIC AND MALEIC ACIDS.
Claim 2
Dependent Claim
39 words
A ZINC STEARATE COMPOSITION COMPOSED OF ZINC SALTS OF A MIXTURE OF ABOUT 70-97% BY WEIGHT OF FATTY ACIDS OF 14-22 CARBON ATOMS AND 3-30% BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF PHTHALIC AND MALEIC ACIDS.
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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |