US3041345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparation of isonicotinyl hydrazones and hydrazides
Assignee: University of California Berkeley
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Filing: 1959-07-22
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Granted: 1962-06-26
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Expires: 1979-07-22
Abstract
No abstract record available.
Inventors
- 👤 Peter P T Sah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:17
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/86; C07H; C07H7/00; C07H7/02; C07H7/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR THE PREPARATION OF A CHEMICAL COMPOUND HAVING ANTI-TUBERCULOSIS ACTIVITY COMPRISING REACTING A MOLECULAR EQUIVALENT OF ISONICOTINIC ACID HYDRAZIDE WITH A SUBSTANTIALLY MOLECULAR EQUIVALENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF GLUCURONOLACTONE, GALACTURONIC ACID, AND MANNURONOLACTONE, IN A HOT, INERT SOLVENT MEDIUM.
Claim 2
Dependent Claim
46 words
A PROCESS FOR THE PREPARATION OF A CHEMICAL COMPOUND HAVING ANTI-TUBERCULOSIS ACTIVITY COMPRISING REACTING A MOLECULAR EQUIVALENT OF ISONICOTINIC ACID HYDRAZIDE WITH A SUBSTANTIALLY MOLECULAR EQUIVALENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF GLUCURONOLACTONE, GALACTURONIC ACID, AND MANNURONOLACTONE, IN A HOT, INERT SOLVENT MEDIUM.
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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |