Patent US3006954A successfully refreshed from Google Patents.
US3006954A
Expired / Lapsed
US
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Urea and thiourea compounds
Assignee: Shell USA Inc
•
Filing: 1957-12-30
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Granted: 1961-10-31
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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
2026-11-08 18:17
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
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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 |