US2532340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-trihalomethyl-1,3-dioxolane-4-carboxylic acids and derivatives thereof
Assignee: GD Searle LLC
•
Filing: 1948-01-28
•
Granted: 1950-12-05
•
Expires: 1968-01-28
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:56
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A NEW COMPOSITION OF MATTER HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
9 words
A NEW COMPOSITION OF MATTER HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2245260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |