Patent US2734918A successfully refreshed from Google Patents.
US2734918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary salts of chlorphenoxy
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:10
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
QUATERNARY SALTS OF PHENOXYMETHYLAMINES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
8 words
QUATERNARY SALTS OF PHENOXYMETHYLAMINES OF THE GENERAL FORMULA
References Cited (Backward Citations)
GB189508988A
Cited
US2125901A
Cited
US2287464A
Cited
US2581336A
Cited
GB672708A
Cited
US2679501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |