US3336411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing 2, 6-dimethylnaphthalene
Assignee: Marathon Oil Co
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Filing: 1964-10-09
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Granted: 1967-08-15
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Expires: 1984-10-09
Abstract
No abstract record available.
Inventors
- 👤 Alvin L Benham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:27
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/20; C07C15/24; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/16; C07C4/18; C07C5/00; C07C5/22; C07C5/27; C07C5/2729; C07C5/2732; C07C5/2735; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/12; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PROCESS FOR PRODUCING 2,6-DIMETHYLNAPHTHALENE COMPRISING: PARTIALLY DEALKYLATING AN ALKYLNAPHTHALENE STREAM CONTAINING TRIMETHYLNAPHTHALENE TO FORM SUBSTANTIAL AMOUNTS OF ISOMERIC DIMETHYLNAPHTHALENES, ISOMERIZING THE DIMETHYLNAPHTHALENES TO PRODUCE SUBSTANTIAL AMOUNTS OF 2,6-DIMETHYNAPHTHALENE, AND SEPARATING THE 2,6 - DIMETHYLNAPHTHALENE FROM ITS ISOMERS.
Claim 2
Dependent Claim
38 words
A PROCESS FOR PRODUCING 2,6-DIMETHYLNAPHTHALENE COMPRISING: PARTIALLY DEALKYLATING AN ALKYLNAPHTHALENE STREAM CONTAINING TRIMETHYLNAPHTHALENE TO FORM SUBSTANTIAL AMOUNTS OF ISOMERIC DIMETHYLNAPHTHALENES, ISOMERIZING THE DIMETHYLNAPHTHALENES TO PRODUCE SUBSTANTIAL AMOUNTS OF 2,6-DIMETHYNAPHTHALENE, AND SEPARATING THE 2,6 - DIMETHYLNAPHTHALENE FROM ITS ISOMERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |