US2601282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-alkyl-beta-arylnitroethenes
Assignee: Pharmacia and Upjohn Co
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Filing: 1948-04-30
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Granted: 1952-06-24
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Expires: 1968-04-30
Abstract
No abstract record available.
Inventors
- 👤 Richard V Heinzelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:17
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A PROCESS FOR CONDENSING AN AROMATIC ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDES AND NAPHTHALDEHYDES WITH A PRIMARY NITRO PARAFFIN HAVING AT LEAST TWO CARBON ATOMS IN THE PRESENCE OF A BASIC CONDENSATION CATALYST TO PRODUCE AN ALPHA-ALKYL-BETA-ARYLNITROETHENE, THE STEPS OF (1) CONDUCTING THE CONDENSATION IN A WATER-INSOLUBLE NON-REACTIVE ORGANIC SOLVENT, AND (2) DISTILLING SOLVENT AND WATER PRODUCED BY THE CONDENSATION FROM THE REACTION ZONE SUBSTANTIALLY AS RAPIDLY AS FORMED.
Claim 2
Dependent Claim
72 words
IN A PROCESS FOR CONDENSING AN AROMATIC ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDES AND NAPHTHALDEHYDES WITH A PRIMARY NITRO PARAFFIN HAVING AT LEAST TWO CARBON ATOMS IN THE PRESENCE OF A BASIC CONDENSATION CATALYST TO PRODUCE AN ALPHA-ALKYL-BETA-ARYLNITROETHENE, THE STEPS OF (1) CONDUCTING THE CONDENSATION IN A WATER-INSOLUBLE NON-REACTIVE ORGANIC SOLVENT, AND (2) DISTILLING SOLVENT AND WATER PRODUCED BY THE CONDENSATION FROM THE REACTION ZONE SUBSTANTIALLY AS RAPIDLY AS FORMED.
References Cited (Backward Citations)
US2415046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |