US2819228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsifying composition
Assignee: Patent and Licensing Corp
•
Filing: 1953-08-26
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Granted: 1958-01-07
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Expires: 1973-08-26
Abstract
No abstract record available.
Inventors
- 👤 Dell M Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:46
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AN IMPROVED EMULSIFYING AGENT COMPRISING A NEGATIVELY CHARGED CLAY AND A CATIONIC SURFACE ACTIVE AGENT, THE CATIONIC SURFACE ACTIVE AGENT BEING PRESENT IN THE RANGE 0.001 TO 0.02 PART PER PART OF CLAY.
Claim 2
Dependent Claim
33 words
AN IMPROVED EMULSIFYING AGENT COMPRISING A NEGATIVELY CHARGED CLAY AND A CATIONIC SURFACE ACTIVE AGENT, THE CATIONIC SURFACE ACTIVE AGENT BEING PRESENT IN THE RANGE 0.001 TO 0.02 PART PER PART OF CLAY.
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |