Patent US3369873A successfully refreshed from Google Patents.
US3369873A
Expired / Lapsed
US
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Apparatus and method for continuously melting a solid reactant
Assignee: VICKERS ZIMMER AG PLANUNG AND
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Filing: 1964-07-09
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Granted: 1968-02-20
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Ulrich Hansjuergen
- 👤 Dietze Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:34
CPC Classifications
B; B01; B01J; B01J6/00; B01J6/005; C; C08; C08G; C08G63/00; C08G63/78; C08G63/785
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
IN A METHOD FOR CONTINUOUSLY MELTING SMALL GRAINS OF REACTANT SOLIDS FOR PRODUCING RESINS COMPRISING THE STEPS OF MELTING A MASS OF SAID SOLIDS, ADDING FRESH SOLIDS, AND PROVIDING HEAT TO MELT SAID FRESH SOLIDS BY WITHDRAWING A PORTION OF SAID MASS, HEATING SAID PORTION ABOVE THE MELTING POINT OF SAID REACTANT SOLIDS AND CHARGING IT BACK TO SAID MASS, THE IMPROVEMENT WHICH COMPRISES CHARGING SAID FRESH SOLIDS DIRECTLY INTO SAID MOLTEN MASS AND CONTINUOUSLY CIRCULATING SAID MASS BY WITHDRAWING
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |