Patent US2943979A successfully refreshed from Google Patents.
US2943979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentrated foam-producing spermicides
Assignee: Individual
•
Filing: 1959-06-23
•
Granted: 1960-07-05
•
Expires: 1979-06-23
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel M Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:56
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/765
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A SPERMICIDAL COMPOSITION CONSISTING ESSENTIALLY OF A BUFFERED PHARMACEUTICAL VEHICLE AND AS CHIEF SPERMICIDAL INGREDIENT AN ALKYLPHENOXYPOLYETHOXYETHANOL OF THE FORMULA
Claim 2
Dependent Claim
20 words
A SPERMICIDAL COMPOSITION CONSISTING ESSENTIALLY OF A BUFFERED PHARMACEUTICAL VEHICLE AND AS CHIEF SPERMICIDAL INGREDIENT AN ALKYLPHENOXYPOLYETHOXYETHANOL OF THE FORMULA
References Cited (Backward Citations)
US1970578A
Cited
US2213477A
Cited
US2467884A
Cited
US2436184A
Cited
US2541103A
Cited
US2556567A
Cited
US2889250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |