Patent US3698903A successfully refreshed from Google Patents.
US2800511A
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Substituted tetrahydronaphthalene aldehydes
Assignee: Givaudan Roure Corp
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Filing: 1955-01-28
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Granted: 1957-07-23
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Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 Marion S Carpenter
- 👤 Jr William M Easter
- 👤 Thomas F Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:14
CPC Classifications
C; C11; C11B; C11B9/00; C11B9/0042; C11B9/0046; C11B9/0049; C11B9/0053; C07; C07C; C07C17/00; C07C17/26; C07C17/32; C07C45/00; C07C45/56; C07C45/562; C07C45/565
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
6-LOWER-ALKYL-SUBSTITUTED, 7-FORMYL-1,1,4,4TETRAMETHYL-1,2,3,4-TETRAHYDRONAPHTHALENES.
Claim 2
Dependent Claim
2 words
6-LOWER-ALKYL-SUBSTITUTED, 7-FORMYL-1,1,4,4TETRAMETHYL-1,2,3,4-TETRAHYDRONAPHTHALENES.
Claim 3
Dependent Claim
41 words
THE PROCESS FOR PREPARING 6-LOWER-ALKYL-SUBSTITUTED, 7-FORMYL-1,1,4,4-TETRAMETHYL-1,2,3,4-TETRAHYDRONAPHTHALENES, WHICH COMPRISES CONDENSING 2,5-DIHALO-2,5DIMETHY HEXANE WITH A LOWER-ALKYL-SUBSTITUTED BENZENE IN THE PRESENCE OF A CONDENSING AGENT, HALOMETHYLATING THE RESULTING CONDENSATION PRODUCT, AND FINALLY CONVERTING THE HALOMETHYL GROUP OF THE RESULTING COMPOUND INTO A CHO GROUP.
Claim 4
Dependent Claim
41 words
THE PROCESS FOR PREPARING 6-LOWER-ALKYL-SUBSTITUTED, 7-FORMYL-1,1,4,4-TETRAMETHYL-1,2,3,4-TETRAHYDRONAPHTHALENES, WHICH COMPRISES CONDENSING 2,5-DIHALO-2,5DIMETHY HEXANE WITH A LOWER-ALKYL-SUBSTITUTED BENZENE IN THE PRESENCE OF A CONDENSING AGENT, HALOMETHYLATING THE RESULTING CONDENSATION PRODUCT, AND FINALLY CONVERTING THE HALOMETHYL GROUP OF THE RESULTING COMPOUND INTO A CHO GROUP.
References Cited (Backward Citations)
FR452537A
Cited
US2628256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |