US3272760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrocyclization catalysts
Assignee: Air Products and Chemicals Inc
•
Filing: 1963-02-05
•
Granted: 1966-09-13
•
Expires: 1983-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis C Doelp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:17
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6522
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE METHOD OF PREPARING DEHYDROCYCLIZATION CATALYST WHICH COMPRISES MIXING ALUMINA TRIHYDRATE WITTH A BINDER, FORMING SAID MIX INTO PELLETS, DEHYDRATING THE PELLETS, IMPREGNATING SAID PELLETS TO INCORPORATE 0.1 TO 2% CHROMIUM, DRYING THE IMPREGNATED PELLETS, FURTHER IMPREGNATING THE PELLETS TO INCORPORATE 0.2 TO 5% OF A METAL SELECTED FROM THE CLASS CONSISTING OF PLATINUM, PALLADIUM AND MIXTURES THEREOF AND CLEANING THE PELLETS.
Claim 2
Independent Claim
62 words
THE METHOD OF PREPARING DEHYDROCYCLIZATION CATALYST WHICH COMPRISES MIXING ALUMINA TRIHYDRATE WITTH A BINDER, FORMING SAID MIX INTO PELLETS, DEHYDRATING THE PELLETS, IMPREGNATING SAID PELLETS TO INCORPORATE 0.1 TO 2% CHROMIUM, DRYING THE IMPREGNATED PELLETS, FURTHER IMPREGNATING THE PELLETS TO INCORPORATE 0.2 TO 5% OF A METAL SELECTED FROM THE CLASS CONSISTING OF PLATINUM, PALLADIUM AND MIXTURES THEREOF AND CLEANING THE PELLETS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |