US3555079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amphoteric surface active agents
Assignee: Lion Fat and Oil Co Ltd
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Filing: 1969-08-18
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Granted: 1971-01-12
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Expires: 1989-08-18
Abstract
Abstract R IS HYDROGEN OR AS ALKYL HAVING 1 TO 4 CARBON ATOMS, AND N IS THE INTEGER 1 OR 2, OR (B) A MIXTURE OF SAID SOLVENT AND AN ADDITIONAL SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, PROPANOL OR DIOXANE, WITH THE AMOUNT OF SAID ADDITIONAL SOLVENT NOT EXCEEDING 80% BY WEIGHT OF THE TOTAL WEIGHT OF THE SOLVENT USED. WHEREIN: RO(CH2CH2O)2H A METHOD FOR PREPARING BETAINE TYPE AMPHOTERIC SURFACE ACTIVE AGENTS BY REACTING A TERTIARY AMINE CONTAINING POLYOXYETHYLENE RADICALS AND AN ALKALI METAL SALT OR AN AMMONIUM SALT OF MONOCHLOROACETIC ACID IN EITHER (A) A SOLVENT HAVING THE FORMULA
Inventors
- 👤 Hideo Marumo
- 👤 Minoru Saitoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
C; C07; C07C; C07C229/00; C07C229/02; C07C229/04; C07C229/22; C07C229/06; C07C229/10; C07C229/12; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14; C11; C11D; C11D1/00; C11D1/88; C11D1/90; C11D1/94
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |