US3560135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel concentrated solution of cationic dyes
Assignee: Mitsubishi Chemical Corp
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Filing: 1967-05-17
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Granted: 1971-02-02
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Expires: 1987-05-17
Abstract
Abstract THE DYE SOLUTION COMPRISES (1) AT LEAST ONE CATIONIC DYE, (2) PHOSPHORIC ACID OR AN ACIDIC PHOSPHORIC ACID ESTER AND (3) AT LEAST ONE WATER-SOLUBLE ORGANIC SOLVENT. THE SOLVENT IS A POLYOL OF THE FORMULA: HO.R(G.R'')N.OH WHEREIN R AND R'' DENOTE AN ALKYLENE GROUP HAVING 2 TO 3 CARBON ATOMS OR A 2-OXY-PROPYL GROUP, N DENOTES AN INTERGER WHICH IS ZERO TO 2 AND G DENOTES AN OXYGEN ATOM. WHEN N IS 1, G MAY ALSO BE A SULPHUR ATOM, A SULPHONYL GROUP OR A >N$COH GROUP; A LOWER ALKYL ETHER OF SAID POLYOL; DIMETHYL SULPHOXIDE; OR DIMETHYL FORMAMIDE.
Inventors
- 👤 Wataru Yamaya
- 👤 Sadao Fujino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:18
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0075; C09B67/0076; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/56; C09B1/58; C09B1/60; C09B11/00; C09B11/04; C09B11/10; C09B11/12; C09B23/00; C09B23/14; C09B23/145; C09B23/16; C09B23/162; C09B23/164; C09B26/00; C09B26/02; C09B26/04; C09B44/00; C09B44/10; Y; Y10; Y10S; Y10S8/00; Y10S8/908
Claims Analysis
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |