Patent US2843595A successfully refreshed from Google Patents.
US2843595A
Expired / Lapsed
US
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Pyridyl-bromobenzyl-dialkyl diamines
Assignee: Veritas Drug Co Ltd
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Filing: 1955-08-10
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Granted: 1958-07-15
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Expires: 1975-08-10
Abstract
No abstract record available.
Inventors
- 👤 Engelhard Hermann
- 👤 Credner Karl
- 👤 Renwanz Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:28
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N - (2 - PYRIDYL) - N - M - BROMOBENZYL - N''.N'' - DIETHYLETHYLENE DIAMINE AND N-(2-PYRIDYL)-N-M-BROMOBENZYLN''-METHYL-N''-ETHYLENE DIAMINE.
Claim 2
Dependent Claim
27 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N - (2 - PYRIDYL) - N - M - BROMOBENZYL - N''.N'' - DIETHYLETHYLENE DIAMINE AND N-(2-PYRIDYL)-N-M-BROMOBENZYLN''-METHYL-N''-ETHYLENE DIAMINE.
References Cited (Backward Citations)
US2406594A
Cited
US2572569A
Cited
GB651596A
Cited
US2569314A
Cited
US2607778A
Cited
US2585239A
Cited
US2727898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |