US2744105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azonitriles containing quaternary ammonium salt groups
Assignee: EIDP Inc
•
Filing: 1952-05-10
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Granted: 1956-05-01
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Expires: 1972-05-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:13
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/63; C07C255/65; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A QUATERNARY AMMONIUM SALT HAVING AN ACYCLIC AZO, -N=N-, GROUP WHOSE VALENCES ARE ATTACHED TO DISCRETE TERTIARY CARBON ATOMS EACH OF WHICH IS ATTACHED TO (A) A CYANO GROUP, (B) AN ALKYL RADICAL OF ONE TO FOUR CARBON ATOMS, (C) A SATURATED DIVALENT ALIPHATIC HYDROCARBON RADICAL OF ONE TO SIX CARBON ATOMS WHICH RADICAL IS DIRECTLY ATTACHED TO THE NITROGEN OF A QUATERNARY AMMONIUM SALT GROUP.
Claim 2
Dependent Claim
66 words
A QUATERNARY AMMONIUM SALT HAVING AN ACYCLIC AZO, -N=N-, GROUP WHOSE VALENCES ARE ATTACHED TO DISCRETE TERTIARY CARBON ATOMS EACH OF WHICH IS ATTACHED TO (A) A CYANO GROUP, (B) AN ALKYL RADICAL OF ONE TO FOUR CARBON ATOMS, (C) A SATURATED DIVALENT ALIPHATIC HYDROCARBON RADICAL OF ONE TO SIX CARBON ATOMS WHICH RADICAL IS DIRECTLY ATTACHED TO THE NITROGEN OF A QUATERNARY AMMONIUM SALT GROUP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |