Patent US2647103A successfully refreshed from Google Patents.
US2647103A
Expired / Lapsed
US
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Latex coagulation process
Assignee: Bridgestone Firestone Inc
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Filing: 1950-11-03
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Granted: 1953-07-28
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 John F Griffith
- 👤 Robert W Lange
- 👤 Jr Thomas W Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:43
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/14; C08F6/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
PROCESS WHICH COMPRISES IMPINGING TOGETHER, ABOVE THE SURFACE OF A BODY OF A SLURRY OF PREVIOUSLY COAGULATED LATEX, (1) A FREELY PROJECTED JET IN THE FORM OF A CONTINUOUS PLANAR SHEET OF A LETEX SELECTED FROM THE GROUP CONSISTING OF LATICES OF POLYMERS OF VINYL CHLORIDE AND OF COPOLYMERS THEREOF WITH OTHER UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH AND CONTAINING AT LEAST 80% OF VINYL CHLORIDE COPOLYMERIZED THEREIN WITH (2) A FREELY PROJECTED JET IN THE FORM OF A CONTINUOUS PLANAR SHEET OF AN AQUEOUS SOLUTION OF A COAGULANT FOR SAID LATEX SELECTED FROM THE GROUP CONSISTING OF SOLUBLE POLYVALENT METAL SALTS, HYDROCHLORIC ACID, SULFURIC ACID AND MIXTURES THEREOF WITH SODIUM CHLORIDE, AND VIGOROUSLY AGITATING SAID SLURRY AT SUCH A RATE AS TO ASSIMILATE THE MIXTURE OF LATEX AND COAGULANT DROPPING THEREINTO FROM SAID JETS TO THE EXTENT OF AT LEAST 50% WITHIN ONE SECOND OF THE ENTRY OF SAID MIXTURE INTO THE SLURRY, SAID LATEX AND COAGULANT BEING SUPPLIED AT TEMPERATURES BELOW 110* F., AND SAID BODY OF SLURRY BEING MAINTAINED AT TEMPERATURES FROM 120* TO 212* F.
Claim 2
Dependent Claim
177 words
PROCESS WHICH COMPRISES IMPINGING TOGETHER, ABOVE THE SURFACE OF A BODY OF A SLURRY OF PREVIOUSLY COAGULATED LATEX, (1) A FREELY PROJECTED JET IN THE FORM OF A CONTINUOUS PLANAR SHEET OF A LETEX SELECTED FROM THE GROUP CONSISTING OF LATICES OF POLYMERS OF VINYL CHLORIDE AND OF COPOLYMERS THEREOF WITH OTHER UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH AND CONTAINING AT LEAST 80% OF VINYL CHLORIDE COPOLYMERIZED THEREIN WITH (2) A FREELY PROJECTED JET IN THE FORM OF A CONTINUOUS PLANAR SHEET OF AN AQUEOUS SOLUTION OF A COAGULANT FOR SAID LATEX SELECTED FROM THE GROUP CONSISTING OF SOLUBLE POLYVALENT METAL SALTS, HYDROCHLORIC ACID, SULFURIC ACID AND MIXTURES THEREOF WITH SODIUM CHLORIDE, AND VIGOROUSLY AGITATING SAID SLURRY AT SUCH A RATE AS TO ASSIMILATE THE MIXTURE OF LATEX AND COAGULANT DROPPING THEREINTO FROM SAID JETS TO THE EXTENT OF AT LEAST 50% WITHIN ONE SECOND OF THE ENTRY OF SAID MIXTURE INTO THE SLURRY, SAID LATEX AND COAGULANT BEING SUPPLIED AT TEMPERATURES BELOW 110* F., AND SAID BODY OF SLURRY BEING MAINTAINED AT TEMPERATURES FROM 120* TO 212* F.
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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |