Patent US2613188A successfully refreshed from Google Patents.
US2613188A
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Preparation of a supported h3po4 catalyst
Assignee: Universal Oil Products Co
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Filing: 1949-06-14
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Granted: 1952-10-07
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Expires: 1969-06-14
Abstract
No abstract record available.
Inventors
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:37
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING FROM ABOUT 50 TO ABOUT 75% BY WEIGHT OF A PHOSPHORIC ACID, FROM ABOUT 15 TO ABOUT 49.5% BY WEIGHT OF A SILICEOUS ADSORBENT, AND FROM ABOUT 0.5 TO ABOUT 10% BY WEIGHT OF A HALOGEN-CONTAINING SILICON COMPOUND TO FORM A COMPOSITE, AND CALCINING SAID COMPOSITE.
Claim 2
Dependent Claim
56 words
A PROCESS FOR MANUFACTURING A SOLID CATALYST WHICH COMPRISES MIXING FROM ABOUT 50 TO ABOUT 75% BY WEIGHT OF A PHOSPHORIC ACID, FROM ABOUT 15 TO ABOUT 49.5% BY WEIGHT OF A SILICEOUS ADSORBENT, AND FROM ABOUT 0.5 TO ABOUT 10% BY WEIGHT OF A HALOGEN-CONTAINING SILICON COMPOUND TO FORM A COMPOSITE, AND CALCINING SAID COMPOSITE.
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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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |