US2608534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heteropoly acids or salts thereof as catalysts
Assignee: Union Oil Company of California
•
Filing: 1949-04-18
•
Granted: 1952-08-26
•
Expires: 1969-04-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:38
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J23/00; B01J23/70; B01J23/76; B01J23/84; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A CATALYST CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A CARRIER OF THE GROUP CONSISTING OF THE INORGANIC METAL OXIDES AND HYDROXIDES AND IMPREGNATED THEREON A MINOR PROPORTION BETWEEN ABOUT 3% AND ABOUT 20% OF A NICKEL SALT OF A HETEROPOLY ACID.
Claim 2
Dependent Claim
42 words
A CATALYST CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A CARRIER OF THE GROUP CONSISTING OF THE INORGANIC METAL OXIDES AND HYDROXIDES AND IMPREGNATED THEREON A MINOR PROPORTION BETWEEN ABOUT 3% AND ABOUT 20% OF A NICKEL SALT OF A HETEROPOLY ACID.
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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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |