Patent US3755290A successfully refreshed from Google Patents.
US3755290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble fiber-reactive sulphophanylazo-naphthyl dyestuffs containing an alpha, beta-dichloro- or dibrompropionylamino group
Assignee: Novartis AG
•
Filing: 1969-11-12
•
Granted: 1973-08-28
•
Expires: 1989-11-12
Abstract
Abstract Fibre-reactive sulphophenylazonapthylmonoazo dyestuffs containing an Alpha , Beta -di-chloro- or dibromopropionylamino group. Yield on cotton brilliant dyeings of excellent general fastness-properties especially good fastness to light and excellant fastness to washing.
Inventors
- 👤 Montmollin R De
- 👤 H Riat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:52
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/465; C09B62/47
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
6 words
A monozao dysstuff of the formula
Claim 2
Dependent Claim
6 words
A monoazo dyestuff of the formula
Claim 3
Dependent Claim
6 words
A monozao dyestuff of the formula
Claim 4
Dependent Claim
6 words
A monoazo dyestuff of the formula
Claim 5
Dependent Claim
15 words
A monoazo dyestuff containing two or three sulfonic acid groups and corresponding to the formula
Claim 6
Dependent Claim
7 words
The monoazo dyestuff corresponding to the formula
Claim 7
Dependent Claim
7 words
The monoazo dyestuff corresponding to the formula
Claim 8
Dependent Claim
7 words
The monoazo dyestuff corresponding to the formula
Claim 9
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 10
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 11
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 12
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 13
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 14
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 15
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 16
Dependent Claim
6 words
The monoazo dyestuff of the formula
Claim 17
Dependent Claim
6 words
The monoazo dyestuff of the formula
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |