US2530362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coagulation of nonelastic polymers
Assignee: Dow Chemical Co
•
Filing: 1946-11-22
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Granted: 1950-11-14
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Expires: 1966-11-22
Abstract
No abstract record available.
Inventors
- 👤 Elton K Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:23
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/16; C08J2357/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD WHICH COMPRISES PROVIDING A LATEX-LIKE DISPERSION OF A COPOLYMER OF VINYLIDENE CHLORIDE WITH A COMPOUND CONTAINING A SINGLE ETHYLENIC UNSTURATION WHICH IS NON-ELASTIC AS COMPARED WITH RUBBER, AND WHICH SETTLES RAPIDLY WHEN COAGULATED, FEEDING A STREAM OF THE LATEX FROM 0.002 TO 0.20 INCH IN DIAMETER INTO AN EXCESS OF A LIQUID COAGULANT TO FORM FILAMENTARY PARTICLES OF THE POLYMER WHICH DO NOT PERMANENTLY OCCLUDE WATER AND WATER-SOLUBLE IMPURITIES, AND WASHING THE PARTICLES WITH FRESH WATER TO FREE THEM FROM WATER-SOLUBLE IMPURITIES.
Claim 2
Independent Claim
84 words
THE METHOD WHICH COMPRISES PROVIDING A LATEX-LIKE DISPERSION OF A COPOLYMER OF VINYLIDENE CHLORIDE WITH A COMPOUND CONTAINING A SINGLE ETHYLENIC UNSTURATION WHICH IS NON-ELASTIC AS COMPARED WITH RUBBER, AND WHICH SETTLES RAPIDLY WHEN COAGULATED, FEEDING A STREAM OF THE LATEX FROM 0.002 TO 0.20 INCH IN DIAMETER INTO AN EXCESS OF A LIQUID COAGULANT TO FORM FILAMENTARY PARTICLES OF THE POLYMER WHICH DO NOT PERMANENTLY OCCLUDE WATER AND WATER-SOLUBLE IMPURITIES, AND WASHING THE PARTICLES WITH FRESH WATER TO FREE THEM FROM WATER-SOLUBLE IMPURITIES.
References Cited (Backward Citations)
US1947080A
Cited
US2170441A
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US2227277A
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US2288982A
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US2333634A
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US2354744A
Cited
US2373347A
Cited
US2404779A
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US2348772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |