Patent US2516967A successfully refreshed from Google Patents.
US2516967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming hydrogel beads
Assignee: International Minerals and Chemical Corp
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Filing: 1948-03-05
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Granted: 1950-08-01
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Expires: 1968-03-05
Abstract
No abstract record available.
Inventors
- 👤 Mary P Elam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:30
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/08; B01J2/00; B01J2/02; B01J2/06; B01J2/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN THE PROCESS OF FORMING INORGANIC OXIDE HYDROGEL PELLETS FROM A HYDROSOL COMPRISING AT LEAST ONE INORGANIC METAL OXIDE, SAID HYDROSOL BEING CAPABLE OF RAPID GELATION, THE IMPROVEMENTS COMPRISING INTRODUCING SAID HYDROSOL IN THE FORM OF GLOBULES INTO A LIQUIEFIED COMPOSITION WHOSE TEMPERATURE IS MAINTAINED BELOW THE BOILING POINT OF SAID HYDROSOL, SAID COMPOSITION BEING SUBSTANTIALLY IMMISCIBLE WITH WATER AND HAVING A MELTING POINT HIGHER THAN THE TEMPERATURE OF THE HYDROSOL BUT BELOW ITS BOILING POINT, ADJUSTING THE TEMPERATURE OF THE HYDROSOL TO BELOW THE MELTING POINT OF SAID LIQUEFIED COMPOSITION PRIOR TO ITS ADMISSION THEREIN, RETAINING THE GLOBULES IN SAID COMPOSITION AT LEAST UNTIL GELATION OCCURS, AND SEPARATIN THE GELLED GLOBULES THEREFROM.
Claim 2
Dependent Claim
113 words
IN THE PROCESS OF FORMING INORGANIC OXIDE HYDROGEL PELLETS FROM A HYDROSOL COMPRISING AT LEAST ONE INORGANIC METAL OXIDE, SAID HYDROSOL BEING CAPABLE OF RAPID GELATION, THE IMPROVEMENTS COMPRISING INTRODUCING SAID HYDROSOL IN THE FORM OF GLOBULES INTO A LIQUIEFIED COMPOSITION WHOSE TEMPERATURE IS MAINTAINED BELOW THE BOILING POINT OF SAID HYDROSOL, SAID COMPOSITION BEING SUBSTANTIALLY IMMISCIBLE WITH WATER AND HAVING A MELTING POINT HIGHER THAN THE TEMPERATURE OF THE HYDROSOL BUT BELOW ITS BOILING POINT, ADJUSTING THE TEMPERATURE OF THE HYDROSOL TO BELOW THE MELTING POINT OF SAID LIQUEFIED COMPOSITION PRIOR TO ITS ADMISSION THEREIN, RETAINING THE GLOBULES IN SAID COMPOSITION AT LEAST UNTIL GELATION OCCURS, AND SEPARATIN THE GELLED GLOBULES THEREFROM.
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) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |