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US3833726A
Expired / Lapsed
US
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1-oxo-substituted-tetrahydronaphthalenes (substituted-tetralones)
Assignee: Warner Lambert Co LLC
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Filing: 1971-12-13
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Granted: 1974-09-03
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Expires: 1991-12-13
Abstract
Abstract COMPOUNDS OF THE FORMULA ARE DISCLOSED: 2-R1,R2,R3,R4-1,2,3,4-TETRAHYDRONAPHTHAN-1-ONE WHEREIN R1 IS HYDROGEN, HYDROXYMETHYLENE, BENXYLIDENE OR BENZYLIDENE SUBSTITUTED BY HALOGEN OR NITRO; R2, R3 AND R4 ARE HYDROGEN, ALKYL, ALKOXY, AMINO, ACYLAMINO, CARBOXY, CARBOXYALKYL, HALOGEN, HYDROXY, NITRO, ALLYL AND METHANESULFONYLAMINO. THESE COMPOUNDS ARE USEFUL IN PROVIDING SYMPTOMATIC RELIEF IN ALLERGIC CONDITIONS SUCH AS ASTHMA, HAY FEVER AND THE LIKE.
Inventors
- 👤 C Schwender
- 👤 J Shavel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:53
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/13; C07C205/20; C07C205/45; C07C49/00; C07C49/587; C07C49/703; C07C49/747
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |