US2682544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aryl-pyridylmethyl alkyl sulfones and their preparation
Assignee: STWB Inc
•
Filing: 1950-09-27
•
Granted: 1954-06-29
•
Expires: 1970-09-27
Abstract
No abstract record available.
Inventors
- 👤 Archer Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:06
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/32; C07D213/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A SULFONE HAVING A FORMULA
Claim 2
Dependent Claim
5 words
A SULFONE HAVING A FORMULA
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) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |