Patent US2925392A successfully refreshed from Google Patents.
US2925392A
Expired / Lapsed
US
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Catalyst and preparation thereof
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-04-02
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Granted: 1960-02-16
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Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Charles W Seelbach
- 👤 Mcculloch William John Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A CATALYST COMPRISING A MAJOR PORTION OF VIOLET CRYSTALLINE TICL3, AND INTIMATELY ASSLCIATED THEREWITH ABOUT 1-50% BY WEIGHT OF TI.
Claim 2
Dependent Claim
20 words
A CATALYST COMPRISING A MAJOR PORTION OF VIOLET CRYSTALLINE TICL3, AND INTIMATELY ASSLCIATED THEREWITH ABOUT 1-50% BY WEIGHT OF TI.
Claim 3
Independent Claim
46 words
A METHOD OF MAKING A CATALYST WHICH COMPRISES REDUCING TICL4 WITH FINELY DIVIDED TITANIUM AT A TEMPERATURE OF 350-600*C. AND A PRESSURE OF 5-100 ATMOSPHERES TO OBTAIN A PRODUCT COMPRISING A MAJOR PROPORTION OF VIOLET CRYSTALLINE TICL3 CONTAINING ABOUT 5-25% OF METALLIC TITANIUM INTIMATELY ASSOCIATED THEREWITH.
Claim 4
Independent Claim
46 words
A METHOD OF MAKING A CATALYST WHICH COMPRISES REDUCING TICL4 WITH FINELY DIVIDED TITANIUM AT A TEMPERATURE OF 350-600*C. AND A PRESSURE OF 5-100 ATMOSPHERES TO OBTAIN A PRODUCT COMPRISING A MAJOR PROPORTION OF VIOLET CRYSTALLINE TICL3 CONTAINING ABOUT 5-25% OF METALLIC TITANIUM INTIMATELY ASSOCIATED THEREWITH.
References Cited (Backward Citations)
US2439765A
Cited
US2694652A
Cited
US2707706A
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US2706153A
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US2670270A
Cited
US2720445A
Cited
US2721189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |