US3941826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(Cyano-dialkylphenyl) alkyl sulfides, sulfoxides and sulfones
Assignee: EIDP Inc
•
Filing: 1975-02-24
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Granted: 1976-03-02
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Expires: 1995-02-24
Abstract
Abstract Compounds having the structure:
Inventors
- 👤 Elmore Louis Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:40
CPC Classifications
C; C07; C07C; C07C317/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
The compounds having the structure ##SPC37## wherein R 1 and R 2 , alike or different, are alkyl of 2 to 7 carbon atoms in which there are no more than 3 carbons in a line from the aromatic ring; R 3 is an alkyl of 1 to 3 carbon atoms; and n is O, 1 or 2 with the provisos that: 1. R 1 and R 2 are not ortho to each other, 2. at least one of R 1 and R 2 contains at least 3 carbon atoms, and 3. CN is not ortho to the ##EQU3##
Claim 2
Dependent Claim
99 words
The compounds having the structure ##SPC37## wherein R 1 and R 2 , alike or different, are alkyl of 2 to 7 carbon atoms in which there are no more than 3 carbons in a line from the aromatic ring; R 3 is an alkyl of 1 to 3 carbon atoms; and n is O, 1 or 2 with the provisos that: 1. R 1 and R 2 are not ortho to each other, 2. at least one of R 1 and R 2 contains at least 3 carbon atoms, and 3. CN is not ortho to the ##EQU3##
Claim 3
Dependent Claim
26 words
The compound of claim 1 wherein R 1 and R 2 are of 3 to 4 carbon atoms, R 3 is methyl and n = 2.
Claim 4
Dependent Claim
8 words
The compound of claim 1, 4-cyano-2,5-diisopropylphenyl methyl sulfide.
Claim 5
Dependent Claim
8 words
The compound of claim 1, 4-cyano-2,5-diisopropylphenyl methyl sulfone.
Claim 6
Dependent Claim
8 words
The compound of claim 1, 4-cyano-2-sec-butyl-5-isopropylphenyl methyl sulfone.
Claim 7
Dependent Claim
8 words
The compound of claim 1, 4-cyano-2,5-di-sec-butylphenyl methyl sulfone.
References Cited (Backward Citations)
US2900409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |