US2814550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High viscosity saline coagulants for latexes
Assignee: Dow Chemical Co
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Filing: 1955-06-02
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Granted: 1957-11-26
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Expires: 1975-06-02
Abstract
No abstract record available.
Inventors
- 👤 Roland E Gunderman
- 👤 Robert M Karlinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:17
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14; C08C1/15; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD WHICH COMPRISES PROVIDING A LIQUID LATEX CAPABLE OF FORMING A COHERENT FILAMENTARY COAGULUM AND A LIQUID COAGULANT CONSISTING OF A SOLUTION IN WATER OF A POLYVALENT METAL SALT CAPABLE OF COAGULATING SAID LATEX, THICKENED WITH ENOUGH HYDROXYETHYL CELLULOSE DISSOLVED IN SAID COAGULANT TO GIVE THE COAGULANT A VISCOSITY OF AT LEAST 200 CENTIPOISES, BRINGING A CONTINUOUS THIN SUPPLY OF ONE OF SAID LIQUIDS INTO CONTACT WITH A BODY OF THE OTHER SAID LIQUID, AND WITHDRAWING THE SO-FORMED COHERCENT COAGULATED STRIP FROM THE LIQUID IN WHICH IT WAS FORMED.
Claim 2
Independent Claim
90 words
THE METHOD WHICH COMPRISES PROVIDING A LIQUID LATEX CAPABLE OF FORMING A COHERENT FILAMENTARY COAGULUM AND A LIQUID COAGULANT CONSISTING OF A SOLUTION IN WATER OF A POLYVALENT METAL SALT CAPABLE OF COAGULATING SAID LATEX, THICKENED WITH ENOUGH HYDROXYETHYL CELLULOSE DISSOLVED IN SAID COAGULANT TO GIVE THE COAGULANT A VISCOSITY OF AT LEAST 200 CENTIPOISES, BRINGING A CONTINUOUS THIN SUPPLY OF ONE OF SAID LIQUIDS INTO CONTACT WITH A BODY OF THE OTHER SAID LIQUID, AND WITHDRAWING THE SO-FORMED COHERCENT COAGULATED STRIP FROM THE LIQUID IN WHICH IT WAS FORMED.
References Cited (Backward Citations)
US1924923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |