US3629241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile optical brighteners
Assignee: Henkel AG and Co KGaA
•
Filing: 1969-06-26
•
Granted: 1971-12-21
•
Expires: 1989-06-26
Abstract
Abstract WHEREIN X IS -SO2NH2, -SO2R, -SO2-OR, -COOR, -CONH2, -CN, -CF3, HALOGEN, -OR, OR -R; X'' IS HALOGEN, -OR OR -R; Y IS PYRAZOLE A(-) 1-(4-X-PHENYL),3-(4-X''-PHENYL),4-Z,4-Z'',5-Y(+),5-Y''- AN OPTICAL BRIGHTENER FOR TEXTILES HAVING THE FORMULA Y'' IS H, -R OR PHENYL; Z IS H OR Y; Z'' IS H OR R; R IS ALKYL HAVING 1 TO 4 CARBON ATOMS; R'' IS H OR R; R'''' IS R OR -(CH2)N-1-CH2OH; N IS AN INTEGER FROM 2 TO 4; AND A IS AN ANION OF AN ACID. -COO-(CH2)N-N(+)(-R")(-R)2 OR -(CH2)N-N(+)(-R)(-R")2 -CO-N(-R'')-(CH2)N-N(-R'')-(CH2)N-N(+)(-R)(-R")2; -CO-N(-R1)-(CH2)N-N(+)(-R)(-R")2;
Inventors
- 👤 Horst-Jurgen Krause
- 👤 Manfred Dohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/06; C07C; C07C251/00; C07C251/72; D; D06; D06L; D06L4/00; D06L4/60; D06L4/657
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |