US3223470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of dyeings and prints which are fast to wet processing
Assignee: Hoechst AG
•
Filing: 1962-05-01
•
Granted: 1965-12-14
•
Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Boedeker Hermann
- 👤 Langbein Gerhard
- 👤 Sommer Karl
- 👤 Zimmermann Hans
- 👤 Berner Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:03
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/4401; C09B62/4403; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/918; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A PROCESS FOR DYEING FIBROUS ARTICLES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF NATURAL CELLULOSE, REGENERATED CELLULOSE, WOOL, SILK AND POLYAMIDES, THE IMPROVEMENT WHICH COMPRISES APPLYING TO SAID FIBROUS ARTICLES A WATER-SOLUBLE ORGANIC DYESTUFF SELECTED FROM THE GROUP CONSISTING OF AZO-, COMPLEX METAL AZO-, PHTHALOCYANINE, COMPLEX METAL PHTHALOCYANINE, ANTHRAQUINONE, AND DIOXAZINE DYESTUFFS, SAID DYESTUFFS CONTAINING 1 TO 4 RADICALS SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
68 words
IN A PROCESS FOR DYEING FIBROUS ARTICLES OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF NATURAL CELLULOSE, REGENERATED CELLULOSE, WOOL, SILK AND POLYAMIDES, THE IMPROVEMENT WHICH COMPRISES APPLYING TO SAID FIBROUS ARTICLES A WATER-SOLUBLE ORGANIC DYESTUFF SELECTED FROM THE GROUP CONSISTING OF AZO-, COMPLEX METAL AZO-, PHTHALOCYANINE, COMPLEX METAL PHTHALOCYANINE, ANTHRAQUINONE, AND DIOXAZINE DYESTUFFS, SAID DYESTUFFS CONTAINING 1 TO 4 RADICALS SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US3046075A
Cited
FR1252324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |