US2794002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing solid siliceous catalyst
Assignee: Universal Oil Products Co
•
Filing: 1953-12-14
•
Granted: 1957-05-28
•
Expires: 1973-12-14
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
- 👤 John W Ziglar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:32
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/16; C01B33/163; B; B01; B01J; B01J21/00; B01J21/06; B01J21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE METHOD OF PREPARING SOLICS HYDROGEL WHICH COMPRISES COMMINGLING WITH AN AQUEOUS ETHYLORTHOSILICATE SOLUTION FROM ABOUT 0.001 TO ABOUT 0.1 MOL OF HYHDROGEN FLUORIDE PER MOLE OF ETHYLORTHOSILICATE AND GELLING THE RESULTANT HYDROSOL.
Claim 2
Independent Claim
33 words
THE METHOD OF PREPARING SOLICS HYDROGEL WHICH COMPRISES COMMINGLING WITH AN AQUEOUS ETHYLORTHOSILICATE SOLUTION FROM ABOUT 0.001 TO ABOUT 0.1 MOL OF HYHDROGEN FLUORIDE PER MOLE OF ETHYLORTHOSILICATE AND GELLING THE RESULTANT HYDROSOL.
References Cited (Backward Citations)
US1450467A
Cited
US1539342A
Cited
US1858100A
Cited
US2027931A
Cited
US2027932A
Cited
US2154079A
Cited
US2317803A
Cited
US2267767A
Cited
US2437532A
Cited
US2500146A
Cited
US2550531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |