US2820039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Y-butoxyphenyl
Assignee: —
•
Filing: —
•
Granted: 1958-01-14
•
Expires: 1975-01-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:10
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
A 1-(P-BUTOXYPHENYL)-3-(P-PYRIDYLPHENYL)2-THIOUREA OF FORMULA,
Claim 2
Dependent Claim
4 words
A 1-(P-BUTOXYPHENYL)-3-(P-PYRIDYLPHENYL)2-THIOUREA OF FORMULA,
References Cited (Backward Citations)
USRE23947E
Cited
US2702821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |