US2824073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing titanium-phosphoric acid catalyst
Assignee: Standard Oil Co
•
Filing: 1953-09-09
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Granted: 1958-02-18
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Expires: 1973-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul N Rylander
- 👤 Wilford J Zimmerschied
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:34
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; C07C2521/00; C07C2521/06; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE PREPARATION OF A SELF-SUPPORTING SOLID MATERIAL WHICH IS A CATALYST FOR THE POLYMERIZATION OF PROPYLENE, WHICH PROCESS COMPRISES HEATING REAGENTS CONSISTING ESSENTIALLY OF TITANIUM DIOXIDE AND TRIPHOSPHORIC ACID IN A WEIGHT RATIO BETWEEN ABOUT 0.1 AND ABOUT 2 AT A TEMPERATURE BETWEEN ABOUT 240*C. AND ABOUT 600*C. IN ORDER TO EFFECT AN EXOTHERMIC, WATER-PRODUCING REACTION.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE PREPARATION OF A SELF-SUPPORTING SOLID MATERIAL WHICH IS A CATALYST FOR THE POLYMERIZATION OF PROPYLENE, WHICH PROCESS COMPRISES HEATING REAGENTS CONSISTING ESSENTIALLY OF TITANIUM DIOXIDE AND TRIPHOSPHORIC ACID IN A WEIGHT RATIO BETWEEN ABOUT 0.1 AND ABOUT 2 AT A TEMPERATURE BETWEEN ABOUT 240*C. AND ABOUT 600*C. IN ORDER TO EFFECT AN EXOTHERMIC, WATER-PRODUCING REACTION.
References Cited (Backward Citations)
US2656323A
Cited
US2650201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |