US2568352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of catalyst gel beads by emulsifying
Assignee: Houdry Process Corp
•
Filing: 1944-05-01
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Granted: 1951-09-18
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Expires: 1964-05-01
Abstract
No abstract record available.
Inventors
- 👤 Winfred O Milligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:14
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12; B01J13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS OF CATALYST MANUFACTURE WHICH COMPRISES EMULSIFYING AN INORGANIC AQUEOUS SOL IN A WATER IMMISCIBLE LIQUID, MAINTAINING SAID SOL EMULSIFIED BY AGITATION UNTIL SAID SOL SETS AS A MULTITUDE OF PIECES OF HYDROGEL, SEPARATING SAID HYDROGEL FROM THE WATER IMMISCIBLE LIQUID, PURIFYING SAID PIECES OF HYDROGEL BY REMOVAL OF WATER-SOLUBLE MATERIALS INCLUDED THEREIN AND DRYING SAID HYDROGEL PIECES.
Claim 2
Dependent Claim
59 words
THE PROCESS OF CATALYST MANUFACTURE WHICH COMPRISES EMULSIFYING AN INORGANIC AQUEOUS SOL IN A WATER IMMISCIBLE LIQUID, MAINTAINING SAID SOL EMULSIFIED BY AGITATION UNTIL SAID SOL SETS AS A MULTITUDE OF PIECES OF HYDROGEL, SEPARATING SAID HYDROGEL FROM THE WATER IMMISCIBLE LIQUID, PURIFYING SAID PIECES OF HYDROGEL BY REMOVAL OF WATER-SOLUBLE MATERIALS INCLUDED THEREIN AND DRYING SAID HYDROGEL PIECES.
References Cited (Backward Citations)
US1146363A
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GB191515365A
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US1614636A
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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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |