US2680762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 2:6-diiododiphenyl ethers
Assignee: Glaxo Laboratories Ltd
•
Filing: 1950-08-28
•
Granted: 1954-06-08
•
Expires: 1970-08-28
Abstract
No abstract record available.
Inventors
- 👤 Dickson George Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/38; C07C227/40; C07C231/00; C07C231/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A PROCESS FOR THE PREPARATION OF 2:6-DIIODODIPHENYL ESTERS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
12 words
A PROCESS FOR THE PREPARATION OF 2:6-DIIODODIPHENYL ESTERS OF THE 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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |