Patent US2577631A successfully refreshed from Google Patents.
US2577631A
Expired / Lapsed
US
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Manufacture of microspheroidal gel particles
Assignee: Standard Oil Development Co
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Filing: 1948-12-29
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Granted: 1951-12-04
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Expires: 1968-12-29
Abstract
No abstract record available.
Inventors
- 👤 Walter A Rex
- 👤 Karl J Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:27
CPC Classifications
B; B01; B01J; B01J13/00; B01J21/00; B01J21/12; B01J47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PROCESS FOR THE PRODUCTION OF AN INORGANIC OXIDE GEL IN THE FORM OF MICROSPHEROIDAL PARTICLES BY DISPERSION AND GELATION OF A HYDROSOL OF SAID OXIDE IN AN ORGANIC LIQUID SETTING MEDIUM WHICH IS AT MOST ONLY PARTIALLY MISCIBLE WITH WATER, WHICH COMPRISES CONTINUOUSLY WITHDRAWING A STREAM OF THE HYDROSOL FROM A COMMON HYDROSOL SOURCE, DIVIDING THE WITHDRAWN STREAM OF HYDROSOL INTO TWO SUBSTREAMS FORMING A CLOSED SUPPLY CIRCUIT HAVING OUTLETS TO A PLURALITY OF SEPARATE GELATION ZONES, WHICH ZONES ARE PARTIALLY FILLED WITH THE ORGANIC LIQUID SETTING MEDIUM AND ARE DISTRIBUTED AROUND THE AFORESAID CIRCUIT, AND SUCCESSIVELY SUPPLYING THE HYDROSOL FROM THE CIRCUIT TO EACH OF THE SAID GELATION ZONES, WHEREBY A CONTINUOUS FLOW OF HYDROSOL IN ALL PARTS OF THE CIRCUIT IS MAINTAINING AT ALL TIMES SO THAT STAGNATION AND GELATION OF THE HYDROSOL IN THE CIRCUIT IS PREVENTED.
Claim 2
Dependent Claim
141 words
A PROCESS FOR THE PRODUCTION OF AN INORGANIC OXIDE GEL IN THE FORM OF MICROSPHEROIDAL PARTICLES BY DISPERSION AND GELATION OF A HYDROSOL OF SAID OXIDE IN AN ORGANIC LIQUID SETTING MEDIUM WHICH IS AT MOST ONLY PARTIALLY MISCIBLE WITH WATER, WHICH COMPRISES CONTINUOUSLY WITHDRAWING A STREAM OF THE HYDROSOL FROM A COMMON HYDROSOL SOURCE, DIVIDING THE WITHDRAWN STREAM OF HYDROSOL INTO TWO SUBSTREAMS FORMING A CLOSED SUPPLY CIRCUIT HAVING OUTLETS TO A PLURALITY OF SEPARATE GELATION ZONES, WHICH ZONES ARE PARTIALLY FILLED WITH THE ORGANIC LIQUID SETTING MEDIUM AND ARE DISTRIBUTED AROUND THE AFORESAID CIRCUIT, AND SUCCESSIVELY SUPPLYING THE HYDROSOL FROM THE CIRCUIT TO EACH OF THE SAID GELATION ZONES, WHEREBY A CONTINUOUS FLOW OF HYDROSOL IN ALL PARTS OF THE CIRCUIT IS MAINTAINING AT ALL TIMES SO THAT STAGNATION AND GELATION OF THE HYDROSOL IN THE CIRCUIT IS PREVENTED.
References Cited (Backward Citations)
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US2435379A
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US2418232A
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US2384946A
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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) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |