US2554597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process using isopoly and heteropoly acids
Assignee: Gulf Research and Development Co
•
Filing: 1948-06-03
•
Granted: 1951-05-29
•
Expires: 1968-06-03
Abstract
No abstract record available.
Inventors
- 👤 William C Starnes
- 👤 Joseph B Mckinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:31
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/14; C10G45/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A CATALYTIC PROCESS UTILIZING A CATALYST SUSPENDED IN THE SUBSTANCE UNDERGOING TREATMENT, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE SUBSTANCE UNDERGOING CATALYTIC TREATMENT A MEMBER OF THE GROUP CONSISTING OF HETEROPOLY AND ISOPOLY ACIDS IN FLOCCULENT FORM, SAID FLOC BEING OBTAINED BY ADDING A SOLUTION OF SAID ACID IN AN ORGANIC SOLVENT TO A LIQUID WHICH IS AN NON-SOLVENT FOR THE ACID FOLLOWED BY FORMATION OF THE FLOCCULENT ACID IN SAID LIQUID.
Claim 2
Dependent Claim
73 words
IN A CATALYTIC PROCESS UTILIZING A CATALYST SUSPENDED IN THE SUBSTANCE UNDERGOING TREATMENT, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE SUBSTANCE UNDERGOING CATALYTIC TREATMENT A MEMBER OF THE GROUP CONSISTING OF HETEROPOLY AND ISOPOLY ACIDS IN FLOCCULENT FORM, SAID FLOC BEING OBTAINED BY ADDING A SOLUTION OF SAID ACID IN AN ORGANIC SOLVENT TO A LIQUID WHICH IS AN NON-SOLVENT FOR THE ACID FOLLOWED BY FORMATION OF THE FLOCCULENT ACID IN SAID LIQUID.
References Cited (Backward Citations)
US1882712A
Cited
US2002997A
Cited
US2377577A
Cited
US2292708A
Cited
US2420477A
Cited
US2352484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |