US2707681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
8-aminolilolidines and 9-aminojulolidines and their addition salts and developer compositions containing the same
Assignee: EIDP Inc
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Filing: 1951-03-07
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Granted: 1955-05-03
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Expires: 1971-03-07
Abstract
No abstract record available.
Inventors
- 👤 Maynard S Raasch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:33
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/06; C07D455/00; C07D455/03; C07D455/04; G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021; G03C7/00; G03C7/30; G03C7/407; G03C7/413; G03C7/4136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE HETEROCYCLIC NITROGEN COMPOUNDS TAKEN FROM THE GROUP CONSISTING OF THE BASES HAVING THE GENERAL FORMULA: WHERE R1 AND R2 ARE TAKEN FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF 1 TO 4 CARBON ATOMS AND N IS AN INTEGER FROM 2 TO 3, AND THEIR ADDITION SALTS WITH NON-OXIDIZING ACIDS HAVING A DISSOCIATION CONSTANT ABOVE 1X10-5.
Claim 2
Dependent Claim
59 words
THE HETEROCYCLIC NITROGEN COMPOUNDS TAKEN FROM THE GROUP CONSISTING OF THE BASES HAVING THE GENERAL FORMULA: WHERE R1 AND R2 ARE TAKEN FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF 1 TO 4 CARBON ATOMS AND N IS AN INTEGER FROM 2 TO 3, AND THEIR ADDITION SALTS WITH NON-OXIDIZING ACIDS HAVING A DISSOCIATION CONSTANT ABOVE 1X10-5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |