Patent US4542117A successfully refreshed from Google Patents.
US2739166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and resulting compositions
Assignee: Individual
•
Filing: 1950-12-19
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Granted: 1956-03-20
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Expires: 1970-12-19
Abstract
No abstract record available.
Inventors
- 👤 John C Treacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:45
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
PROCESS FOR MAKING ALKYL NITRITE COMPOSITIONS WHICH COMPRISES BUBBLING NITROGEN DIOXIDE GAS INTO A COOLED LIQUID MONOHYDRIC ALIPHATIC ALCOHOL UNTIL THE TEMPERATURE STARTS TO RISE AND RECOVERING THE RESULTING ALKYL NITRITE FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
35 words
PROCESS FOR MAKING ALKYL NITRITE COMPOSITIONS WHICH COMPRISES BUBBLING NITROGEN DIOXIDE GAS INTO A COOLED LIQUID MONOHYDRIC ALIPHATIC ALCOHOL UNTIL THE TEMPERATURE STARTS TO RISE AND RECOVERING THE RESULTING ALKYL NITRITE FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
US2166698A
Cited
GB586022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |