US3078643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aromatic from saturated hydrocarbons
Assignee: Union Carbide Corp
•
Filing: 1960-01-06
•
Granted: 1963-02-26
•
Expires: 1980-01-06
Abstract
No abstract record available.
Inventors
- 👤 Robert M Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:26
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13; Y; Y10; Y10S; Y10S95/00; Y10S95/90; Y10S95/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR SEPARATING TOLUENE FROM A VAPOR MIXTURE THEREOF WITH NORMAL HEXANE WHICH COMPRISES CONTACTING SAID VAPOR MIXTURE WITH A BED OF AT LEAST PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITE X ADSORBENT MATERIAL WHOSE PORES ARE SUFFICIENTLY LARGE TO ABSORB TOLUENE AND NORMAL
Claim 2
Dependent Claim
42 words
A PROCESS FOR SEPARATING TOLUENE FROM A VAPOR MIXTURE THEREOF WITH NORMAL HEXANE WHICH COMPRISES CONTACTING SAID VAPOR MIXTURE WITH A BED OF AT LEAST PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITE X ADSORBENT MATERIAL WHOSE PORES ARE SUFFICIENTLY LARGE TO ABSORB TOLUENE AND NORMAL
References Cited (Backward Citations)
US2442191A
Cited
US2425535A
Cited
US2882244A
Cited
US2988503A
Cited
US2944092A
Cited
US2950336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |