US3055841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing attrition resistant adsorbents
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-06-29
•
Granted: 1962-09-25
•
Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Gladrow Elroy Merle
- 👤 Ruhnke Edward Vincent
- 👤 Jr Charles Newton Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:13
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN IMPROVED PROCESS FOR PREPARING ZEOLITES OF SUPERIOR STRENGTH HAVING MOLECULAR SIEVE PROPERTIES WHICH IN AQUEOUS SOLUTION IN AMOUNTS SUCH THAT THE RATIO OF IN AQUEOUS SOLUTION IN AMOUNTS SUCH THAT THE RATIO OF SILICA TO ALUMINA IN THE MIXTURE IS IN THE RANGE OF ABOUT 0.5/1 TO 3/1 AT TEMPERTURES OF FROM ABOUT 160* TO ABOUT 215*F. PRECIPITATING CRYSTALLINE SODIUM ALUMINO SILICATE, SEGREGATING SAID CRYSTALS, TREATING SAID CRYSTALS WITH SODIUM SILICATE IN THE PRESENCE OF WATER, DRYING SAID TREATED CRYSTALS, FURTHER TREATING SAID DRIED CRYSTALS WITH AN AQUEOUS FI-01 SOLUTION OF A CALCIUM SALT TO REPLACE AT LEAST A PORTION OF THE SODIUM CONTENT THEREOF, AND ACTIVATING SAID TREATED MATERIAL.
Claim 2
Dependent Claim
111 words
AN IMPROVED PROCESS FOR PREPARING ZEOLITES OF SUPERIOR STRENGTH HAVING MOLECULAR SIEVE PROPERTIES WHICH IN AQUEOUS SOLUTION IN AMOUNTS SUCH THAT THE RATIO OF IN AQUEOUS SOLUTION IN AMOUNTS SUCH THAT THE RATIO OF SILICA TO ALUMINA IN THE MIXTURE IS IN THE RANGE OF ABOUT 0.5/1 TO 3/1 AT TEMPERTURES OF FROM ABOUT 160* TO ABOUT 215*F. PRECIPITATING CRYSTALLINE SODIUM ALUMINO SILICATE, SEGREGATING SAID CRYSTALS, TREATING SAID CRYSTALS WITH SODIUM SILICATE IN THE PRESENCE OF WATER, DRYING SAID TREATED CRYSTALS, FURTHER TREATING SAID DRIED CRYSTALS WITH AN AQUEOUS FI-01 SOLUTION OF A CALCIUM SALT TO REPLACE AT LEAST A PORTION OF THE SODIUM CONTENT THEREOF, AND ACTIVATING SAID TREATED MATERIAL.
References Cited (Backward Citations)
US1928123A
Cited
US2165014A
Cited
US2413134A
Cited
US2442191A
Cited
US2456072A
Cited
US2480627A
Cited
US2559152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |