US2750262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating components of a fusible material
Assignee: AT&T Inc
•
Filing: 1952-07-12
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Granted: 1956-06-12
•
Expires: 1972-07-12
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:04
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE PROCESS COMPRISING INSERTING IN AT LEAST ONE OF A SERIES OF RECEPTACLE CONTAINING A SOLUTION COMPRISING A MAJOR AND A MINOR INGREDIENT, A HOLLOW CARRIER TOGETHER WITH A SOLID BODY COMPRISING THE SAME INGREDIENTS, CAUSING SAID SOLID BODY TO MELT WITHIN THE RECEPTACLE, PASSING COOLANT THROUGH SAID CARRIER AND THEREBY CAUSING A PORTION OF THE MOLTEN MATERIAL WITHIN THE RECEPTACLE TO FREEZE ON SAID CARRIER AND AT LEAST ONCE ADVANCING SAID CARRIER TOGETHER WITH THE SOLID BODY TO ANOTHER RECEPTACLE AND REPEATING THE AFORESAID SERIES OF STEPS, WITHDRAWING AS PRODUCT A PORTION OF THE MATERIAL FROM WITHIN A RECEPTACLE, CAUSING A FLOW OF A MOLTEN MATERIAL FROM RECEPTACLE TO RECEPTACLE IN A DIRECTION OPPOSITE TO THAT OF SOLID TRANSFER, WITHDRAWING AS WASTE A PORTION OF MOLTEN MATERIAL FROM THE FINAL RECEPTACLE OF SAID MOLTEN FLOW AND ADDING, AS FEED, MATERIAL COMPRISING SAID SOLUTION IN AN AMOUNT EQUAL TO THAT OF PRODUCT PLUS WASTE.
Claim 2
Dependent Claim
154 words
THE PROCESS COMPRISING INSERTING IN AT LEAST ONE OF A SERIES OF RECEPTACLE CONTAINING A SOLUTION COMPRISING A MAJOR AND A MINOR INGREDIENT, A HOLLOW CARRIER TOGETHER WITH A SOLID BODY COMPRISING THE SAME INGREDIENTS, CAUSING SAID SOLID BODY TO MELT WITHIN THE RECEPTACLE, PASSING COOLANT THROUGH SAID CARRIER AND THEREBY CAUSING A PORTION OF THE MOLTEN MATERIAL WITHIN THE RECEPTACLE TO FREEZE ON SAID CARRIER AND AT LEAST ONCE ADVANCING SAID CARRIER TOGETHER WITH THE SOLID BODY TO ANOTHER RECEPTACLE AND REPEATING THE AFORESAID SERIES OF STEPS, WITHDRAWING AS PRODUCT A PORTION OF THE MATERIAL FROM WITHIN A RECEPTACLE, CAUSING A FLOW OF A MOLTEN MATERIAL FROM RECEPTACLE TO RECEPTACLE IN A DIRECTION OPPOSITE TO THAT OF SOLID TRANSFER, WITHDRAWING AS WASTE A PORTION OF MOLTEN MATERIAL FROM THE FINAL RECEPTACLE OF SAID MOLTEN FLOW AND ADDING, AS FEED, MATERIAL COMPRISING SAID SOLUTION IN AN AMOUNT EQUAL TO THAT OF PRODUCT PLUS WASTE.
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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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |