US3314958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium enolates of urea derivatives
Assignee: Millmaster Onyx Corp
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Filing: 1964-06-29
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Granted: 1967-04-18
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Reginald L Wakeman
- 👤 Joseph F Coates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:01
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10L1/24; C10L1/2443
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A QUATERNARY AMMONIUM ENOLATE OF A CYCLIC DERIVATIVE OF A UREA AND AN ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF DICARBOXYLIC, HYDROXYCARBOXYLIC, ALDOCARBOXYLIC AND KETOCARBOXYLIC ACIDS, HAVING THE FOLLOWING STRUCTURE:
Claim 2
Dependent Claim
31 words
A QUATERNARY AMMONIUM ENOLATE OF A CYCLIC DERIVATIVE OF A UREA AND AN ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF DICARBOXYLIC, HYDROXYCARBOXYLIC, ALDOCARBOXYLIC AND KETOCARBOXYLIC ACIDS, HAVING THE FOLLOWING STRUCTURE:
References Cited (Backward Citations)
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US2786841A
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Cited
US2946797A
Cited
US2957866A
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US2970999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |