Carbazole dyestuffs
Abstract
Abstract NEW PHENYL-HETERYL-METHANE DYESTUFFS ADAPTED FOR USE IN DYEING AND PRINTING OF MATERIALS OF LEATHER, TANNINTREATED COTTON, CELLULOSE ACETATE, SYNTHETIC SUPER POLYAMIDES AND POLYURETHANES AND FOR THE DYEING OF FIBERS CONTAINING LIGNIN SUCH AS COCO, JUTE AND SISAL OR FOR THE PRODUCTION OF WRITING LIQUIDS, STAMP DYES, PASTE FOR BALLPOINT PENS OR FOR USE IN OFFSET PRINTING, OR FOR DYEING AND PRINTING OF MATERIALS CONSISTING COMPLETELY OR PARTIALLY OF POLYMERS OR COPOLYMERS OF ACRYLONITRILE OR VINYLIDEND CYANIDE OR ACID-MODIFIED POLYESTER MATERIALS AND ARE CHARACTERIZED ON THESE LATTER MATERIALS BY GOOD FASTNESS TO LIGHT, WET PROCESSING, RUBBING AND SUBLIMATION, AS WELL AS HAVING GOOD AFFINITY TO THE FIBERS AND GOOD FASTNESS TO CROSS-DYEING.
Inventors
- 👤 R Raue
- 👤 H Kuhlthau
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |