US3243470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separations process
Assignee: Monsanto Co
•
Filing: 1960-12-27
•
Granted: 1966-03-29
•
Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 George D Davis
- 👤 Jr Earle C Makin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:37
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13; C07C2529/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR SEPARATING A MIXTURE OF AT LEAST TWO UNSATURATED STRAIGHT-CHAIN HYDROCARBONS OF DIFFERENT DEGREES OF UNSATURATION WHICH COMPRISES INTRODUCING SAID MIXTURE CONCURRENTLY WITH HYDROGEN AND AT A TEMPERATURE OF 0 TO 500*C. INTO CONTACT WITH A MOLECULAR SIEVE SELECTED FROM THE GROUP CONSISTING OF SODIUM-ALUMINO-SILICATES, CALCIUM-ALUMINO-SILICATES, AND SODIUM-CALCIUM-ALUMINOSILICATES, SAID MOLECULAR SIEVE HAVING AT LEAST A PORTION OF ITS IONS REPLACED BY ION EXCHANGE WITH A METAL FROM GROUP VIII OF THE PERIODIC TABLE.
Claim 2
Dependent Claim
75 words
A PROCESS FOR SEPARATING A MIXTURE OF AT LEAST TWO UNSATURATED STRAIGHT-CHAIN HYDROCARBONS OF DIFFERENT DEGREES OF UNSATURATION WHICH COMPRISES INTRODUCING SAID MIXTURE CONCURRENTLY WITH HYDROGEN AND AT A TEMPERATURE OF 0 TO 500*C. INTO CONTACT WITH A MOLECULAR SIEVE SELECTED FROM THE GROUP CONSISTING OF SODIUM-ALUMINO-SILICATES, CALCIUM-ALUMINO-SILICATES, AND SODIUM-CALCIUM-ALUMINOSILICATES, SAID MOLECULAR SIEVE HAVING AT LEAST A PORTION OF ITS IONS REPLACED BY ION EXCHANGE WITH A METAL FROM GROUP VIII OF THE PERIODIC TABLE.
References Cited (Backward Citations)
US2451327A
Cited
US2935459A
Cited
US2900430A
Cited
US2976331A
Cited
US2946829A
Cited
US3036137A
Cited
US3140322A
Cited
US2959627A
Cited
US3033778A
Cited
US3075023A
Cited
US3106593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |