US3245970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coagulation of colloidal dispersions
Assignee: Dow Chemical Co
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Filing: 1962-10-19
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Granted: 1966-04-12
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Dennis E Drayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/14; C08F6/22; B; B01; B01J; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00063; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD FOR THE COAGULATION OF RESINOUS COLLOIDAL DISPERSIONS, WHICH METHOD COMPRISES PROVIDING A FORWARDLY MOVING HELICALLY FLOWING STREAM OF COAGULANT; INTRODUCING INTO SAID STREAM OF COAGULANT A STREAM OF LATEX; THEN ADDING CONSECUTIVELY DOWN-STREAM TO THE LATEXCOAGULANT STREAM A HEATED DILUENT FOR SAID LATEX TO FORM A HEATED DILUTED COAGULATED LATEX STREAM; AND A COOLER LIQUID FOR SAID LATEX INTO SAID HOT DILUTED COAGULATED LATEX STREAM.
Claim 2
Independent Claim
67 words
A METHOD FOR THE COAGULATION OF RESINOUS COLLOIDAL DISPERSIONS, WHICH METHOD COMPRISES PROVIDING A FORWARDLY MOVING HELICALLY FLOWING STREAM OF COAGULANT; INTRODUCING INTO SAID STREAM OF COAGULANT A STREAM OF LATEX; THEN ADDING CONSECUTIVELY DOWN-STREAM TO THE LATEXCOAGULANT STREAM A HEATED DILUENT FOR SAID LATEX TO FORM A HEATED DILUTED COAGULATED LATEX STREAM; AND A COOLER LIQUID FOR SAID LATEX INTO SAID HOT DILUTED COAGULATED LATEX STREAM.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |