US3337360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment dispersions for coloring viscose spinning masses
Assignee: Hoechst AG
•
Filing: 1964-04-21
•
Granted: 1967-08-22
•
Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Schonbach Viktor
- 👤 Weissert Josef
- 👤 Teige Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:16
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/12; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0089; D; D01; D01D; D01D1/00; D01D1/06; D01D1/065; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN AQUEOUS PIGMENT DISPERSION SUITABLE FOR COLORING VISCOSE SPINNING MASSES CONSISTING ESSENTIALLY OF (A) ABOUT 1 PART BY WEIGHT OF A PIGMENT AND (B) AS THE DISPERSING MEDIUM FOR THE PIGMENT, ABOUT 0.5 TO 1 PART BY WEIGHT OF A REACTION PRODUCT OF: (1) A WATER-SOLUBLE ADDITION PRODUCT OF 8 TO 25 MOLES OF LOW MOLECULAR WEIGHT ALKYLENE OXIDE AND ONE MOLE OF BENZAROMATIC AMINE; (11) 0.5 TO 2 MOLES OF A PHENOL; AND (111) 1 TO 4 MOLES OF FORMALDEHYDE.
Claim 2
Dependent Claim
81 words
AN AQUEOUS PIGMENT DISPERSION SUITABLE FOR COLORING VISCOSE SPINNING MASSES CONSISTING ESSENTIALLY OF (A) ABOUT 1 PART BY WEIGHT OF A PIGMENT AND (B) AS THE DISPERSING MEDIUM FOR THE PIGMENT, ABOUT 0.5 TO 1 PART BY WEIGHT OF A REACTION PRODUCT OF: (1) A WATER-SOLUBLE ADDITION PRODUCT OF 8 TO 25 MOLES OF LOW MOLECULAR WEIGHT ALKYLENE OXIDE AND ONE MOLE OF BENZAROMATIC AMINE; (11) 0.5 TO 2 MOLES OF A PHENOL; AND (111) 1 TO 4 MOLES OF FORMALDEHYDE.
References Cited (Backward Citations)
US3094499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |