US3824218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective skin cream
Assignee: Monsanto Co
•
Filing: 1970-06-12
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Granted: 1974-07-16
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Expires: 1990-06-12
Abstract
Abstract DISCLOSED HEREIN IS A SKIN CREAM WHICH, WHEN APPLIED TOPICALLY TO THE SKIN, PROVIDES AN INVISIBLE PROTECTIVE COATING WHICH IS A BARRIER AGAINST AQUEOUS AND POLAR ORGANIC SOLVENTS. THE BARRIER COMPONENT INGREDIENT IN THE SKIN CREAM IS A COPOLYMER OF A VINYL ESTER AND A MONOALKYL ESTER OF MALEIC ANHYDRIDE WHERE THE ALKYL GROUP CONTAINS FROM 14 TO 22 CARBON ATOMS.
Inventors
- 👤 L Mckenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:38
CPC Classifications
A; A61; A61Q; A61Q17/00; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8164
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |