US3702229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing of anionic dyes on polycarbon-amides of bis(para-aminocyclohexyl)methane and dodecanedioic acid
Assignee: Novartis Corp
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Filing: 1970-12-29
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Granted: 1972-11-07
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Expires: 1990-12-29
Abstract
Abstract PROCESSES ARE PROVIDED FOR THE PRINTING SUBSTRATES OF SILK-LIKE LINEAR, HIGH MOLECULAR WEIGHT FIBERS CONTAINING AT LEAST 90% REPEATING UNITS OF THE FORMULA -(NH-(R-1,4-CYCLOHEXYLENE)-C(-R)2-(R-1,4-CYCLOHEXYLENE)- NH-CO-(CH2)10-CO)- WHEREIN R IS THE SAME OR DIFFERENT MEMBER OF THE CLASS CONSISTING OF HYDROGEN AND METHYL WITH SELECTED ACID DYESTUFFS. BY THE USE OF SELECTED ORGANIC CARRIERS AND DYESTUFFS USED IN CONJUNCTION WITH THIOUREA, EXCELLENT PRINTS CAN BE OBTAINED. THE PRINTED SUBSTRATES MAY BE STEAM DEVELOPED.
Inventors
- 👤 Eugene E Campana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/649; D06P1/6491; D06P1/651; D06P1/65106; D06P1/653; D06P1/6536; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |