US3917641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iminoisoindolinones
Assignee: Sandoz AG
•
Filing: 1973-05-07
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Granted: 1975-11-04
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Expires: 1993-05-07
Abstract
Abstract Disclosed are compounds of formula I, in which R1 and R2, which may be the same or different, each signifies a fluorine atom, a chlorine atom, a bromine atom, a methyl radical, a methoxy radical or an ethoxy radical, PROCESS FOR THE PRODUCTION THEREOF, AND USE THEREOF AS PIGMENTS FOR SYNTHETIC POLYMERIC MATERIAL, SPUN-DYED VISCOSE AND CELLULOSE ACETATE FILAMENTS, PAPER AND IN SURFACE COATINGS SUCH AS EMULSION PAINTS.
Inventors
- 👤 Peter Bitterli
- 👤 Fritz Kehrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/50; C09; C09B; C09B57/00; C09B57/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF FORMULA 1,
Claim 2
Dependent Claim
5 words
A COMPOUND OF FORMULA 1,
Claim 3
Dependent Claim
24 words
A compound according to claim 1, wherein R1 and R2, which may be the same or different, each signifies a chlorine or bromine atom.
Claim 4
Dependent Claim
8 words
A compound according to claim 2 of formula,
Claim 5
Dependent Claim
8 words
A compound according to claim 2 of formula,
References Cited (Backward Citations)
US2973358A
Cited
US3758497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |