US3006954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea and thiourea compounds
Assignee: Shell USA Inc
•
Filing: 1957-12-30
•
Granted: 1961-10-31
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 David E Ramey
- 👤 Silverman Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:51
CPC Classifications
C; C07; C07C; C07C335/00; C07C335/04; C07C335/14; C07C275/00; C07C275/04; C07C275/18; C07C275/20; C07C275/22; C07C335/06; C07C335/08; C07C2602/00; C07C2602/36; C07C2602/42; C07C2603/00; C07C2603/56; C07C2603/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
1 - (1,4,5,6,7,7 - HEXACHLOROBICYCLO(2.2.1)HEPT - 5EN-2-YLMETHYL)-2-THIOUREA.
Claim 2
Dependent Claim
7 words
1 - (1,4,5,6,7,7 - HEXACHLOROBICYCLO(2.2.1)HEPT - 5EN-2-YLMETHYL)-2-THIOUREA.
Claim 3
Dependent Claim
11 words
A COMPOUND OF THE FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 4
Dependent Claim
11 words
A COMPOUND OF THE FORMULA SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2061243A
Cited
US2015045A
Cited
US2106552A
Cited
US2621211A
Cited
US2642373A
Cited
US2635115A
Cited
US2768970A
Cited
US2638431A
Cited
US2662096A
Cited
US2688039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |