US4310693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
o-Aminophenol compounds
Assignee: Fujifilm Holdings Corp
•
Filing: 1980-07-18
•
Granted: 1982-01-12
•
Expires: 2000-07-18
Abstract
Abstract o-Aminophenol derivatives are described represented by the formula (I) ##STR1## wherein R represents --NH 2 or --NH--CO--R 6 ; R 1 and R 2 which may be the same or different, each can represent an alkyl group or an aromatic group, or R 1 and R 2 together can form a ring; or R 1 , R 2 and R 3 together can form a ring ; R 3 represents hydrogen, an alkyl group or an aromatic group; R 4 can represent an alkyl group or an aromatic group; R 5 can represent an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom or an acylamino group; and n is 0, 1 or 2; R 6 represents an alkyl group or an aromatic group; and R 4 and R 5 together can form a heterocyclic ring, R 1 and R 4 together can form a heterocyclic ring, or R 1 and R 5 together can form a ring; and R 1 , R 2 , R 3 , R 4 , and R 5 n have a total of 7 or more carbon atoms.
Inventors
- 👤 Shinsaku Fujita
- 👤 Koichi Koyama
- 👤 Yoshio Inagaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:31
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/56; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30541; G03C7/30547
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
An o-aminophenol compound represented by the formula (IB) ##STR17## wherein: R 1 and R 2 , which may be the same or different, each represent an alkyl group or an aromatic group, or R 1 and R 2 together can form a ring, or R 1 , R 2 and R 3 together can form a ring; R 3 represents hydrogen atom, an alkyl group or an aromatic group; R 4 can represent an alkyl group or an aromatic group; R 5 can represent an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom or an acylamino group, and n is 0, 1 or 2; and R 4 and R 5 together can form a heterocyclic ring, R 1 and R 4 together can form a heterocyclic ring, or R 1 and R 5 together can form a ring; and R 1 , R 2 , R 3 , R 4 , and R 5 n contain a total of 7 or more carbon atoms.
Claim 2
Dependent Claim
170 words
An o-aminophenol compound represented by the formula (IB) ##STR17## wherein: R 1 and R 2 , which may be the same or different, each represent an alkyl group or an aromatic group, or R 1 and R 2 together can form a ring, or R 1 , R 2 and R 3 together can form a ring; R 3 represents hydrogen atom, an alkyl group or an aromatic group; R 4 can represent an alkyl group or an aromatic group; R 5 can represent an alkyl group, an alkoxy group, an alkylthio group, an arylthio group, a halogen atom or an acylamino group, and n is 0, 1 or 2; and R 4 and R 5 together can form a heterocyclic ring, R 1 and R 4 together can form a heterocyclic ring, or R 1 and R 5 together can form a ring; and R 1 , R 2 , R 3 , R 4 , and R 5 n contain a total of 7 or more carbon atoms.
Claim 3
Dependent Claim
80 words
An o-aminophenol compound as claimed in claim 1, wherein R 1 and R 2 independently represent an alkyl group; R 3 represents hydrogen or an alkyl group; R 4 represents an alkyl group; R 5 represents an alkyl group, an alkoxy group, an alkylthio group, a halogen atom, and n is 0, 1 or 2; R 1 , R 2 , R 3 , R 4 , and R 5 n contain a total of 7 or more carbon atoms.
Claim 4
Dependent Claim
32 words
An o-aminophenol compound as in claim 1, wherein the alkyl groups represented by R 1 , R 2 , R 3 , and R 4 contain from 1 to 40 carbon atoms.
Claim 5
Dependent Claim
32 words
An o-aminophenol compound as in claim 3, wherein the alkyl groups represented by R 1 , R 2 , R 3 , and R 4 contain from 1 to 24 carbon atoms.
Claim 6
Dependent Claim
47 words
An o-aminophenol compound as in claim 1, wherein the aromatic groups represented by R 1 , R 2 , R 3 , and R 4 are selected from the group consisting of a phenyl group, a substituted phenyl group, a naphthyl group, and a substituted naphthyl group.
Claim 7
Dependent Claim
29 words
An o-aminophenol compound as in claim 1, wherein the alkyl group, the alkoxy group, or the alkylthio group represented by R 5 contains from 1 to 40 carbon atoms.
Claim 8
Dependent Claim
29 words
An o-aminophenol compound as in claim 6, wherein the alkyl group, the alkoxy group, or the alkylthio group represented by R 5 contains from 1 to 24 carbon atoms.
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) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |