US3340567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing sol microspheres
Assignee: WR Grace and Co
•
Filing: 1964-05-05
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Granted: 1967-09-12
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Expires: 1984-05-05
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Flack
- 👤 Smith Jean Gillen
- 👤 Frederick T Fitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:13
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/623; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; B01J2/08; B01J21/00; C; C01; C01G; C01G43/00; C01G43/01; C01G43/025; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/51; C01P2004/60; C01P2004/61; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN APPARTUS FOR MAKING SOLS INTO SPHERICAL FORMS COMPRISING IN COMBINATION: (A) AN EXTRACTION COLUMN HAVING A FIRST AND A SECOND END, (B) AN EXTRACTION SOLVENT INLET AT THE FIRST END OF THE COLUMN, (C) A SPHERICAL PARTICLE OUTLET AT THE FIRST END OF THE COLUMN, (D) AN EXTRACTION SOLVENT OUTLET AT THE SECOND END OF THE COLUMN, AND (E) A SOL INTRODUCTION MEANS AT THE SECOND END OF THE COLUMN COMPRISING A MEANS FOR INTRODUCING THE SOL INTO A STREAM OF SOLVENT TO FORM A DROPLET-SOLVENT DISPERSION AND FOR INTRODUCING THE DROPLET-SOLVENT DISPERSION INTO THE SECOND END OF THE COLUMN, THE SOL INTRODUCTION MEANS COMPRISING A CASING TUBE AND AN
Claim 2
Dependent Claim
111 words
AN APPARTUS FOR MAKING SOLS INTO SPHERICAL FORMS COMPRISING IN COMBINATION: (A) AN EXTRACTION COLUMN HAVING A FIRST AND A SECOND END, (B) AN EXTRACTION SOLVENT INLET AT THE FIRST END OF THE COLUMN, (C) A SPHERICAL PARTICLE OUTLET AT THE FIRST END OF THE COLUMN, (D) AN EXTRACTION SOLVENT OUTLET AT THE SECOND END OF THE COLUMN, AND (E) A SOL INTRODUCTION MEANS AT THE SECOND END OF THE COLUMN COMPRISING A MEANS FOR INTRODUCING THE SOL INTO A STREAM OF SOLVENT TO FORM A DROPLET-SOLVENT DISPERSION AND FOR INTRODUCING THE DROPLET-SOLVENT DISPERSION INTO THE SECOND END OF THE COLUMN, THE SOL INTRODUCTION MEANS COMPRISING A CASING TUBE AND AN
References Cited (Backward Citations)
US2475984A
Cited
US2676892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |