US4347356A
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Novel nitrogen-containing monoterpene derivatives
Assignee: Taito Co Ltd
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Filing: 1980-03-31
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Granted: 1982-08-31
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Expires: 2000-03-31
Abstract
Abstract Novel nitrogen-containing monoterpene derivatives having pyrindine skeleton and dimers, trimers and higher polymers thereof as low toxic and efficient dyestuffs. Their pharmacological effects are expected.
Inventors
- 👤 Ryousuke Touyama
- 👤 Hiroyuki Inouye
- 👤 Tetsuro Shingu
- 👤 Yoshio Takeda
- 👤 Takeshi Ikumoto
- 👤 Hidetoshi Okuyama
- 👤 Osamu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:03
CPC Classifications
C; C07; C07D; C07D221/00; C07D221/02; C07D221/04; C09; C09B; C09B57/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
Compounds of the formula: ##STR35## wherein: R 1 represents a lower alkyl group, phenyl, lower alkyl group containing carboxylic acid radical or a lower alkyl group containing a carboxylic acid ester radical, R 2 represents --COOH or --COOR, wherein R represents a lower alkyl group, R 3 represents hydrogen or a lower alkyl group, and R 4 represents a lower alkyl group or --CH 2 OH.
Claim 2
Dependent Claim
66 words
Compounds of the formula: ##STR35## wherein: R 1 represents a lower alkyl group, phenyl, lower alkyl group containing carboxylic acid radical or a lower alkyl group containing a carboxylic acid ester radical, R 2 represents --COOH or --COOR, wherein R represents a lower alkyl group, R 3 represents hydrogen or a lower alkyl group, and R 4 represents a lower alkyl group or --CH 2 OH.
Claim 3
Dependent Claim
13 words
The compounds of claim 1 wherein R 1 represents a lower alkyl group.
Claim 4
Dependent Claim
10 words
The compounds of claim 1 wherein R 3 represents hydrogen.
Claim 5
Dependent Claim
18 words
The compounds of claim 1 wherein R 1 represents a lower alkyl group and R 3 represents hydrogen.
Claim 6
Dependent Claim
24 words
The compounds of claim 1 wherein R 1 represents a lower alkyl group, phenyl or a lower alkyl group containing a carboxylic acid radical.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |