Patent US2774801A successfully refreshed from Google Patents.
US2774801A
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Conversion of methylnaphthalenes
Assignee: ExxonMobil Oil Corp
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Filing: 1952-09-16
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Granted: 1956-12-18
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Expires: 1972-09-16
Abstract
No abstract record available.
Inventors
- 👤 Harry L Coonradt
- 👤 Wilbur K Leaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:35
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/28; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR CONVERTING METHYL-SUBSTITUTED NAPHTHALENES INTO OTHER VALUABLE AROMATIC HYDROCARBONS, WHICH COMPRISES CONTACTING THE METHYL-SUBSTITUTED NAPHTHALENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF (1) CHROMIA SUPPORTED ON ALUMINA AND CONTAINING BETWEEN ABOUT 4 WEIGHT PERCENT AND ABOUT 12 WEIGHT PERCENT CHROMIA, (2) CHROMIA COGELLED WITH ALUMINA AND CONTAINING BETWEEN ABOUT 18 MOLE PERCENT AND ABOUT 80 MOLE PERCENT CHROMIA, AND (3) MOLYBDENUM OXIDE-ALUMINA CONTAINING BETWEEN ABOUT 5 WEIGHT PERCENT AND ABOUT 20 WEIGHT PERCENT MOLYBDENUM OXIDE, AT A TEMPERATURE OF BETWEEN ABOUT 1000* F. AND ABOUT 1150* F., FOR A CONTACT TIME OF BETWEEN ABOUT ONE SECOND AND ABOUT 1000 SECONDS, AND IN THE PRESENCE OF HYDROGEN GAS UNDER PRESSURES OF BETWEEN ABOUT 50 POUNDS PER SQUARE INCH GAUGE AND ABOUT 200 POUNDS PER SQUARE INCH GAUGE.
Claim 2
Dependent Claim
130 words
A PROCESS FOR CONVERTING METHYL-SUBSTITUTED NAPHTHALENES INTO OTHER VALUABLE AROMATIC HYDROCARBONS, WHICH COMPRISES CONTACTING THE METHYL-SUBSTITUTED NAPHTHALENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF (1) CHROMIA SUPPORTED ON ALUMINA AND CONTAINING BETWEEN ABOUT 4 WEIGHT PERCENT AND ABOUT 12 WEIGHT PERCENT CHROMIA, (2) CHROMIA COGELLED WITH ALUMINA AND CONTAINING BETWEEN ABOUT 18 MOLE PERCENT AND ABOUT 80 MOLE PERCENT CHROMIA, AND (3) MOLYBDENUM OXIDE-ALUMINA CONTAINING BETWEEN ABOUT 5 WEIGHT PERCENT AND ABOUT 20 WEIGHT PERCENT MOLYBDENUM OXIDE, AT A TEMPERATURE OF BETWEEN ABOUT 1000* F. AND ABOUT 1150* F., FOR A CONTACT TIME OF BETWEEN ABOUT ONE SECOND AND ABOUT 1000 SECONDS, AND IN THE PRESENCE OF HYDROGEN GAS UNDER PRESSURES OF BETWEEN ABOUT 50 POUNDS PER SQUARE INCH GAUGE AND ABOUT 200 POUNDS PER SQUARE INCH GAUGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |