US3625976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coumarin ether sun-screening compounds
Assignee: International Flavors and Fragrances Inc
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Filing: 1969-12-09
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Granted: 1971-12-07
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Expires: 1989-12-09
Abstract
Abstract WHEREIN R1 is alkenyl, cycloalkenyl, alkadienyl, cycloalkadienyl, alkatrienyl, alkoxyalkadienyl, acyloxyalkadienyl, alkoxyalkenyl, cyclialkoxyalkenyl, aryl, alkaryl, or aralkyl and R2 is hydrogen or lower alkyl and such compounds having ultraviolet absorption maxima within the range of 2,900 A. up to about 3,400 A. The compounds wherein R2 is lower alkyl and R1 is alkadienyl or where R1 is cycloalkadienyl or cycloalkenyl are novel compounds. The use as sun-screening agents of essentially colorless, stable, odorless, nonirritating, nonsensitizing, and oilcompatible coumarin ether compounds, such compounds having the formula:
Inventors
- 👤 Ernst Theodore Theimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:57
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/06; C07D311/08; C07D311/16; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4973; A61K8/498; A61Q; A61Q17/00; A61Q17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A mixture of 7-geranoxy-4-methyl coumarin and 7-neryloxy-4-methyl coumarin.
Claim 2
Dependent Claim
9 words
A process for preparing a compound having the formula:
References Cited (Backward Citations)
US3351482A
Cited
US3282938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |