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US2750262A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for separating components of a fusible material

Assignee: AT&T Inc
•
Filing: 1952-07-12
•
Granted: 1956-06-12
•
Expires: 1972-07-12
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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.

References Cited (Backward Citations)

US1666440A Cited
US1778018A Cited
US1938101A Cited
US1967053A Cited
US2196594A Cited
US2602763A Cited
US2617273A Cited
US2622115A Cited
US2679539A Cited

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

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