US2820822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of guanidino type compounds
Assignee: International Minerals and Chemical Corp
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Filing: 1956-02-01
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Granted: 1958-01-21
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Expires: 1976-02-01
Abstract
No abstract record available.
Inventors
- 👤 William G Skelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:09
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/04; C07C279/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PREPARING GUANDIDINO TYPE COMPOUNDS WHICH COMPRISES REACTING A CARBAMIDE, IN WHICH NO MORE THAN ONE AMINO GROUP INCLUDES A HYDROCARBON RADICAL AS A SUBSTITUENT FOR HYDROGEN THEREON, WITH A DIALKYL SULFATE, THE ALKYL GROUP OF WHICH CONTAINS NO MORE THAN SIX CARBON ATOMS, ADDING TO THE RESULTING PRODUCT AN ALPHAAMINO FATTY ACID AND SUFFICIENT STRONG INORGANIC BASE TO PRODUCE A MIXTURE HAVING A PH BETWEEN ABOUT 10.0 AND ABOUT 10.3 AND RECOVERING AN ALPHA-GUANIDINO SUBSTITUED FATTY ACID THEREFROM UPON SUBSTANITAL COMPLETION OF THE REACTION.
Claim 2
Dependent Claim
87 words
A PROCESS FOR PREPARING GUANDIDINO TYPE COMPOUNDS WHICH COMPRISES REACTING A CARBAMIDE, IN WHICH NO MORE THAN ONE AMINO GROUP INCLUDES A HYDROCARBON RADICAL AS A SUBSTITUENT FOR HYDROGEN THEREON, WITH A DIALKYL SULFATE, THE ALKYL GROUP OF WHICH CONTAINS NO MORE THAN SIX CARBON ATOMS, ADDING TO THE RESULTING PRODUCT AN ALPHAAMINO FATTY ACID AND SUFFICIENT STRONG INORGANIC BASE TO PRODUCE A MIXTURE HAVING A PH BETWEEN ABOUT 10.0 AND ABOUT 10.3 AND RECOVERING AN ALPHA-GUANIDINO SUBSTITUED FATTY ACID THEREFROM UPON SUBSTANITAL COMPLETION OF THE REACTION.
References Cited (Backward Citations)
US1967400A
Cited
FR1079728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |