US2736754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing hydroxy aromatics
Assignee: Beazer East Inc
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Filing: 1951-12-04
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Granted: 1956-02-28
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Expires: 1971-12-04
Abstract
No abstract record available.
Inventors
- 👤 Webb George Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:23
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A FUSION PROCESS FOR PRODUCING POLYHYDROXY AROMATIC COMPOUNDS WHICH INCLUDES THE STEPS OF FUSING AN ALKALI METAL SALT OF AN AROMATIC POLYSULFONIC ACID AND AN ALKALI METAL HYDROXIDE IN ABOUT 5% TO ABOUT 20% EXCESS OF THE AMOUNT REQUIRED TO FORM THE ALKALI METAL POLYPHENATE, AND SUBJECTING THE VISCOUS DOUGHY REACTION MASS WHICH RESULTS TO SIMULTANEOUS, POSITIVE, KNEADING AND CUTTING FORCES DURING THE COURCE OF REACTION AT A TEMPERATURE OF ABOUT 320*C. TO ABOUT 360*C. AND UNTIL A DRY POWDER IS OBTAINED.
Claim 2
Dependent Claim
82 words
A FUSION PROCESS FOR PRODUCING POLYHYDROXY AROMATIC COMPOUNDS WHICH INCLUDES THE STEPS OF FUSING AN ALKALI METAL SALT OF AN AROMATIC POLYSULFONIC ACID AND AN ALKALI METAL HYDROXIDE IN ABOUT 5% TO ABOUT 20% EXCESS OF THE AMOUNT REQUIRED TO FORM THE ALKALI METAL POLYPHENATE, AND SUBJECTING THE VISCOUS DOUGHY REACTION MASS WHICH RESULTS TO SIMULTANEOUS, POSITIVE, KNEADING AND CUTTING FORCES DURING THE COURCE OF REACTION AT A TEMPERATURE OF ABOUT 320*C. TO ABOUT 360*C. AND UNTIL A DRY POWDER IS OBTAINED.
References Cited (Backward Citations)
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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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |