US2689266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphthalene production
Assignee: ExxonMobil Oil Corp
•
Filing: 1952-09-16
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Granted: 1954-09-14
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Expires: 1972-09-16
Abstract
No abstract record available.
Inventors
- 👤 Harry L Coonradt
- 👤 Carlos L Gutzeit
- 👤 Barton W Rope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/866; C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2523/76; C07C2523/84; C07C2523/85; C07C2523/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR THE PRODUCTION OF NAPHTHALENE FROM A METHYLNAPHTHALENE WHICH COMPRISES CONTACTING SAID METHYLNAPHTHALENE WITH A CATALYST CONSISTING ESSENTIALLY OF BETWEEN ABOUT 5 AND ABOUT 45 MOLE PER CENT NICKEL OXIDE, BETWEEN ABOUT 5 AND ABOUT 45 MOLE PER CENT OF CHROMIA, AND BETWEEN ABOUT 50 AND ABOUT 90 MOLE PER CENT OF ALUMINA, THE TOTAL MOLE PER CENT OF NICKEL OXIDE AND CHROMIA THEREIN BEING LESS THAN 50 MOLE PER CENT, AT A TEMPERATURE OF BETWEEN ABOUT 900* F. AND ABOUT 1200* F., FOR A PERIOD OF TIME OF BETWEEN ABOUT ONE SECOND AND ABOUT 60 SECONDS, IN THE PRESENCE OF HYDROGEN GAS AT SUBSTANTIALLY ATMOS PHERIC PRESSURE; THE MOLAR PROPORTION OF HYDROGEN TO METHYLNAPHTHALENE VARYING BETWEEN ABOUT 1:10 TO 10:1.
Claim 2
Dependent Claim
123 words
A PROCESS FOR THE PRODUCTION OF NAPHTHALENE FROM A METHYLNAPHTHALENE WHICH COMPRISES CONTACTING SAID METHYLNAPHTHALENE WITH A CATALYST CONSISTING ESSENTIALLY OF BETWEEN ABOUT 5 AND ABOUT 45 MOLE PER CENT NICKEL OXIDE, BETWEEN ABOUT 5 AND ABOUT 45 MOLE PER CENT OF CHROMIA, AND BETWEEN ABOUT 50 AND ABOUT 90 MOLE PER CENT OF ALUMINA, THE TOTAL MOLE PER CENT OF NICKEL OXIDE AND CHROMIA THEREIN BEING LESS THAN 50 MOLE PER CENT, AT A TEMPERATURE OF BETWEEN ABOUT 900* F. AND ABOUT 1200* F., FOR A PERIOD OF TIME OF BETWEEN ABOUT ONE SECOND AND ABOUT 60 SECONDS, IN THE PRESENCE OF HYDROGEN GAS AT SUBSTANTIALLY ATMOS PHERIC PRESSURE; THE MOLAR PROPORTION OF HYDROGEN TO METHYLNAPHTHALENE VARYING BETWEEN ABOUT 1:10 TO 10:1.
References Cited (Backward Citations)
CH127690A
Cited
US2194449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |