US3203751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of dyeing polyester fibers with diamino-anthraquinone-carbonitrile dyestuffs
Assignee: Novartis Corp
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Filing: 1963-07-22
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Granted: 1965-08-31
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Hildreth John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:43
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54; C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/22; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8252
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
A PROCESS OF DYEING AND PRINTING A POLYESTER MATERIAL, WHICH COMPRISES APPLYING TO FIBROUS MATERIAL OF SYNTHETIC POLYESTER AN AQUEOUS DISPERSION CONTAINING A 1,4-DIAMIONANTHRAQUINONECARBONITRILE 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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |