US3179380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coagulation of colloidal dispersions
Assignee: Dow Chemical Co
•
Filing: 1959-11-02
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Granted: 1965-04-20
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Expires: 1979-11-02
Abstract
No abstract record available.
Inventors
- 👤 Dennis E Drayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:39
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01F; B01F27/00; B01F27/80; B01F27/90; B01F27/906; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00063; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00164; B01J2219/18; B01J2219/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A GENERALLY CYLINDRICAL AND SUBSTANTIALLY VERTICALLY DISPOSED VESSEL HAVING A LENGTH TO DIAMETER RATIO OF AT LEAST ABOUT 8:1, THE VESSEL HAVING AN INTERNALLY SMOOTH GENERALLY CYLINDRICAL WALL, THE GENERALLY CYLINDRICAL WALL OF THE VESSEL DEFINING A DISCHARGE PORT NEAR THE TOP, AN INLET PORT NEAR THE BOTTOM AND AT LEAST THREE INLET PORTS DISPOSED IN SPACED VERTICAL RELATIONSHIP BETWEEN THE BOTTOM AND TOP PORTS, THE INLET PORT ADJACENT THE BOTTOM INLET PORT BEING IN COMMUNICATION WITH A LATEX INLET CONDUIT SURROUNDED BY AN ANNULAR INLET, AN AGITATOR EXTENDING VERTICALLY DOWNWARDLY INTO THE VESSEL FOR A DISTANCE OF AT LEAST ABOUT 80 PERCENT OF THE LENGTH OF THE VESSEL, THE
Claim 2
Dependent Claim
110 words
A GENERALLY CYLINDRICAL AND SUBSTANTIALLY VERTICALLY DISPOSED VESSEL HAVING A LENGTH TO DIAMETER RATIO OF AT LEAST ABOUT 8:1, THE VESSEL HAVING AN INTERNALLY SMOOTH GENERALLY CYLINDRICAL WALL, THE GENERALLY CYLINDRICAL WALL OF THE VESSEL DEFINING A DISCHARGE PORT NEAR THE TOP, AN INLET PORT NEAR THE BOTTOM AND AT LEAST THREE INLET PORTS DISPOSED IN SPACED VERTICAL RELATIONSHIP BETWEEN THE BOTTOM AND TOP PORTS, THE INLET PORT ADJACENT THE BOTTOM INLET PORT BEING IN COMMUNICATION WITH A LATEX INLET CONDUIT SURROUNDED BY AN ANNULAR INLET, AN AGITATOR EXTENDING VERTICALLY DOWNWARDLY INTO THE VESSEL FOR A DISTANCE OF AT LEAST ABOUT 80 PERCENT OF THE LENGTH OF THE VESSEL, THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |