Patent US2837330A successfully refreshed from Google Patents.
Patent US3706676A successfully refreshed from Google Patents.
US3706676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethoxylated amino alkanes as surfactants
Assignee: Gulf Research and Development Co
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Filing: 1968-12-26
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Granted: 1972-12-19
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Expires: 1988-12-26
Abstract
Abstract SURFACE ACTIVE AGENTS ARE FORMED OF SUBSTANTIALLY UNIFORM MIXTURES OF THE VARIOUS AMINE ISOMERS OF ETHOXYLATED AMINOALKANES REPRESENTED BY THE FORMULA: CH3-(CH2)X-CH(-N(-(C2H4-O)A-H)-(C2H4-O)B-H)-(CH2)Y-CH3 WHEREIN THE TOTAL NUMBER OF CARBONS IN THE LINEAR PARAFFIN CHAIN IS FROM ABOUT 8 TO 22; WHEREIN X IS A WHOLE NUMBER FROM ABOUT 0-19 AND Y IS A WHOLE NUMBER FROM ABOUT 0-19; AND WHEREIN A AND B ARE EACH GREATER THAN ZERO, THE SUM OF WHICH IS GREATER THAN ABOUT 4.
Inventors
- 👤 Norman W Franke
- 👤 Stanley C Paviak
- 👤 Warren K Porter Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:30
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/42; C11D1/44
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |