US2628233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted and unsubstituted barbiturates and thiobarbiturates of 1, 2, 3-trisubstituted pyrazolones and processes of producing such compositions
Assignee: Luxema SA
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Filing: 1950-12-19
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Granted: 1953-02-10
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Expires: 1970-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jules H T Ledrut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:32
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A COMPOSITION SELECTED FROM THE CLASS CONSISTING OF COMPOSITIONS HAVING THE FORMULA:
Claim 2
Dependent Claim
12 words
A COMPOSITION SELECTED FROM THE CLASS CONSISTING OF COMPOSITIONS HAVING THE FORMULA:
Claim 3
Independent Claim
43 words
THE METHOD OF PRODUCING A CONDENSATION PRODUCT OF THE ALDEHYDE OF A 1,2,3-TRISUBSTITUTED PYRAZOLONE WITH A MEMBER SELECTED FROM THE CLASS CONSISTING OF MALONYL-UREA, MALONYL-THIOUREA, SUBSTITUTED MALONYL-UREAS AND SUBSTITUTED MALONYL-THIOUREAS, SAID METHOD COMPRISING REACTING THE ALDEHYDE OF A 1.2.3-TRISUBSTITUTED PYRAZOLONE HAVING THE FORMULA:
Claim 4
Independent Claim
43 words
THE METHOD OF PRODUCING A CONDENSATION PRODUCT OF THE ALDEHYDE OF A 1,2,3-TRISUBSTITUTED PYRAZOLONE WITH A MEMBER SELECTED FROM THE CLASS CONSISTING OF MALONYL-UREA, MALONYL-THIOUREA, SUBSTITUTED MALONYL-UREAS AND SUBSTITUTED MALONYL-THIOUREAS, SAID METHOD COMPRISING REACTING THE ALDEHYDE OF A 1.2.3-TRISUBSTITUTED PYRAZOLONE HAVING THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |