US2676955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea adducts of quaternary ammonium compounds
Assignee: Standard Oil Co
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Filing: 1950-10-21
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Granted: 1954-04-27
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Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Weitkamp
- 👤 Jerome W Arkis
- 👤 George W Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:47
CPC Classifications
C; C11; C11D; C11D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN ADDUCT OF UREA AND A QUATERNARY DIMETHYLAMMONIUM COMPOUND HAVING AS SUBSTITUENTS ON THE NITROGEN ATOM THEREOF (1) AT LEAST ONE STRAIGHT-CHAIN ORGANIC RADICAL CONTAINING AT LEAST FIVE METHYLENE GROUPS AND (2) AN ALIPHATIC RADICAL CONTAINING NOT MORE THAN ONE CARBOCYCLIC-SUBSTITUENT, SAID CARBOCYCLIC SUBSTITUENT CONTAINING NOT MORE THAN SIX CARBON ATOMS IN THE RING, SAID QUATERNARY DIMETHYLAMMONIUM COMPOUND BEING OTHERWISE FREE FROM FUNCTIONAL GROUPS REACTIVE WITH UREA.
Claim 2
Dependent Claim
67 words
AN ADDUCT OF UREA AND A QUATERNARY DIMETHYLAMMONIUM COMPOUND HAVING AS SUBSTITUENTS ON THE NITROGEN ATOM THEREOF (1) AT LEAST ONE STRAIGHT-CHAIN ORGANIC RADICAL CONTAINING AT LEAST FIVE METHYLENE GROUPS AND (2) AN ALIPHATIC RADICAL CONTAINING NOT MORE THAN ONE CARBOCYCLIC-SUBSTITUENT, SAID CARBOCYCLIC SUBSTITUENT CONTAINING NOT MORE THAN SIX CARBON ATOMS IN THE RING, SAID QUATERNARY DIMETHYLAMMONIUM COMPOUND BEING OTHERWISE FREE FROM FUNCTIONAL GROUPS REACTIVE WITH UREA.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |