Patent US2748090A successfully refreshed from Google Patents.
US2748090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of solid polymerization catalysts
Assignee: Universal Oil Products Co
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Filing: 1955-02-28
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Granted: 1956-05-29
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Charles H Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/185; B01J27/1856; B01J27/1853; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR THE MANUFACTURE OF A SOLID POLYMERIZATION CATALYST WHICH COMPRISES ADMIXING A METAL SALT WITH AN ACIDIC OXIDE OF PHOSPHOROUS, ADDING SAID MIXTURE TO A SOLID ADSORBENT, DRYING AND CALCINING SAID COMPOSITE, AND THEREAFTER TREATING THE RESULTANT COMPOSITE WITH A BORON HALIDE.
Claim 2
Dependent Claim
44 words
A PROCESS FOR THE MANUFACTURE OF A SOLID POLYMERIZATION CATALYST WHICH COMPRISES ADMIXING A METAL SALT WITH AN ACIDIC OXIDE OF PHOSPHOROUS, ADDING SAID MIXTURE TO A SOLID ADSORBENT, DRYING AND CALCINING SAID COMPOSITE, AND THEREAFTER TREATING THE RESULTANT COMPOSITE WITH A BORON HALIDE.
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |