US3357782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrazinium dyes, with maleic acid or its salts and dyeing therewith
Assignee: Sandoz AG
•
Filing: 1964-01-20
•
Granted: 1967-12-12
•
Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Carbonell Jose
- 👤 Sanahuja Viktor
- 👤 Siegrist Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:03
CPC Classifications
C; C09; C09B; C09B69/00; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR DYEING OR PRINTING A TEXTILE FIBER SELECTED FROM THE GROUP CONSISTING OF AN ACRYLONITRILE POLYMERISATION PRODUCT AND A LINEAR AROMATIC POLYESTER WITH AN ASSISTANT AND WITH A BASIC DYE OF THE FORMULA
Claim 2
Dependent Claim
35 words
A PROCESS FOR DYEING OR PRINTING A TEXTILE FIBER SELECTED FROM THE GROUP CONSISTING OF AN ACRYLONITRILE POLYMERISATION PRODUCT AND A LINEAR AROMATIC POLYESTER WITH AN ASSISTANT AND WITH A BASIC DYE OF THE FORMULA
References Cited (Backward Citations)
GB633160A
Cited
US2764466A
Cited
BE543605A
Cited
US3068056A
Cited
US3252965A
Cited
US3252967A
Cited
FR1312183A
Cited
FR1342828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |