US3079377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyes
Assignee: EIDP Inc
•
Filing: 1960-08-29
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Granted: 1963-02-26
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Expires: 1980-08-29
Abstract
No abstract record available.
Inventors
- 👤 Sartori Mario Francesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:29
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/02; C09B44/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN AZO DYE SELECTED FROM THE GROUP CONSISTING OF THE FREE BASE FORM AND QUATERNARY SALTS OF COMPOUNDS WHICH IS FREE BASE FORM CORRESPOND TO THE FORMULA O2N-(3,5-DI(CL-)-1,4-PHENYLENE)-N=N-(2-X,5-CL-1,4PHENYLENE)-N(-Z)-(CH2)N-N( -R)2 WHEREIN X IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND CHLORINE, R IS AN ALKYL RADICAL OF 1 TO 4 CATOMS, Z IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF 1 TO 4 C-ATOMS, WHILE N IS AN INTEGER FROM 2 TO 4.
Claim 2
Dependent Claim
79 words
AN AZO DYE SELECTED FROM THE GROUP CONSISTING OF THE FREE BASE FORM AND QUATERNARY SALTS OF COMPOUNDS WHICH IS FREE BASE FORM CORRESPOND TO THE FORMULA O2N-(3,5-DI(CL-)-1,4-PHENYLENE)-N=N-(2-X,5-CL-1,4PHENYLENE)-N(-Z)-(CH2)N-N( -R)2 WHEREIN X IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND CHLORINE, R IS AN ALKYL RADICAL OF 1 TO 4 CATOMS, Z IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF 1 TO 4 C-ATOMS, WHILE N IS AN INTEGER FROM 2 TO 4.
References Cited (Backward Citations)
US2099525A
Cited
US2238485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |