US2965563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming and regeneration and reactivation of platinum catalyst with chlorine gas under anhydrous conditions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-03-23
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Granted: 1960-12-20
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Steffgen
- 👤 Jr Charles Newton Kimberlin
- 👤 Fred J Buchmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:29
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF HYDROFORMING NAPHTHAS WHICH CONSISTS ESSENTIALLY OF CONTACTING NAPHTHA VAPORS IN ADMIXTURE WITH FROM 50 TO 6000 CU. FT. OF HYDROGEN-RICH GAS PER BARREL OF HAPHTHA FEED WITH A PLATINUM ON ALUMINA CATALYST OF TEMPERATURES IN THE RANGE OF 800*-975*F. AND AT A PRESSURE OF FROM 0 TO 400 P.S.I.G. FOR A PERIOD SUFFICIENT TO EFFECT THE DESIRED CONVERSION, PERIODICALLY REACTIVATING SAID CATALYST TO MAINTAIN AN AVERAGE METAL CRYSTAL SIZE BELOW ABOUT 150 A. UNITS BY DISCONTINUING CONTACT OF THE NAPHTHA FEED VAPORS AND HYDROGEN-RICH GAS WITH THE DEACTIVATED CATALYST, CONTACTING SAID DEACTIVATED CATALYST WITH A FREE OXYGEN-CONTAINING GAS AT A TEMPERATURE IN THE RANGE OF 900* TO 1200*F. TO REMOVE CARBONACEOUS DEPOSITS, STRIPPING THE CATALYST SO TREATED WITH A DRY GAS TO REMOVE WATER, THEN CONTACTING THE
Claim 2
Independent Claim
130 words
THE METHOD OF HYDROFORMING NAPHTHAS WHICH CONSISTS ESSENTIALLY OF CONTACTING NAPHTHA VAPORS IN ADMIXTURE WITH FROM 50 TO 6000 CU. FT. OF HYDROGEN-RICH GAS PER BARREL OF HAPHTHA FEED WITH A PLATINUM ON ALUMINA CATALYST OF TEMPERATURES IN THE RANGE OF 800*-975*F. AND AT A PRESSURE OF FROM 0 TO 400 P.S.I.G. FOR A PERIOD SUFFICIENT TO EFFECT THE DESIRED CONVERSION, PERIODICALLY REACTIVATING SAID CATALYST TO MAINTAIN AN AVERAGE METAL CRYSTAL SIZE BELOW ABOUT 150 A. UNITS BY DISCONTINUING CONTACT OF THE NAPHTHA FEED VAPORS AND HYDROGEN-RICH GAS WITH THE DEACTIVATED CATALYST, CONTACTING SAID DEACTIVATED CATALYST WITH A FREE OXYGEN-CONTAINING GAS AT A TEMPERATURE IN THE RANGE OF 900* TO 1200*F. TO REMOVE CARBONACEOUS DEPOSITS, STRIPPING THE CATALYST SO TREATED WITH A DRY GAS TO REMOVE WATER, THEN CONTACTING THE
References Cited (Backward Citations)
US2746909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |