US2777796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spermicidal composition
Assignee: Individual
•
Filing: 1951-11-30
•
Granted: 1957-01-15
•
Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Nathaniel M Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:05
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/765
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A NON-TOXIC SPERMICIDAL COMPOSITION COMPRISING A VEHICLE, A SUBSTANCE OF THE CLASS CONSISTING OF GLYCERYL, ETHYLENE GLYCOL AND PROPYLENE GLYCOL MONOESTERS OF UNSATURATED FATTY ACIDS HAVING FORM 10 TO 18 CARBONS IN THE CHAIN, AND MIXTURES THEREOF, AND A POLYETHYLENE GLYCOL MONOETHER OF ALKYL PHENOL OF THE FOLLOWING GENERAL FORMULA
Claim 2
Dependent Claim
50 words
A NON-TOXIC SPERMICIDAL COMPOSITION COMPRISING A VEHICLE, A SUBSTANCE OF THE CLASS CONSISTING OF GLYCERYL, ETHYLENE GLYCOL AND PROPYLENE GLYCOL MONOESTERS OF UNSATURATED FATTY ACIDS HAVING FORM 10 TO 18 CARBONS IN THE CHAIN, AND MIXTURES THEREOF, AND A POLYETHYLENE GLYCOL MONOETHER OF ALKYL PHENOL OF THE FOLLOWING GENERAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |