US2970158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active agents
Assignee: Wyandotte Chemicals Corp
•
Filing: 1957-05-31
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Granted: 1961-01-31
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Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr William W Levis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:39
CPC Classifications
C; C09; C09D; C09D7/00; C09D7/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A SURFACE ACTIVE AGENT CONSISTING OF THE ADDUCT OF ABOUT 5 TO ABOUT 75 WEIGHT PERCENT OF ETHYLENE OXIDE AND AN AMINOESTER HAVING THE FORMULA
Claim 2
Dependent Claim
25 words
A SURFACE ACTIVE AGENT CONSISTING OF THE ADDUCT OF ABOUT 5 TO ABOUT 75 WEIGHT PERCENT OF ETHYLENE OXIDE AND AN AMINOESTER HAVING THE FORMULA
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) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |