US2718520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrophenyl-oxazolines and processes
Assignee: —
•
Filing: —
•
Granted: 1955-09-20
•
Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/10; C07D263/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
AN OXAZOLINE OF THE CLASS CONSISTING OF 2-DICHLOROMETHYL - 4 - HYDROXYMETHYL - 5 - P - NITROPHENYL - $2OXAZOLINE AND 2 - DICHLOROMETHYL - 4 - P-NITROPHENYLHYDROXYMETHYL-$2-OXAZOLINE.
Claim 2
Dependent Claim
41 words
PROCESS FOR THE PRODUCTION OF AN OXAZOLINE OF THE CLASS CONSISTING OF 2-DICHLOROMETHYL-4-HYDROXYMETHYL5-P-NITROPHENYL-$2-OXAZOLINE AND 2-DICHLOROMETHYL-4-PNITROPHENYLHYDROXYMETHYL-$2-OXAZOLINE WHICH COMPRISES REACTING IN AN ANHYDROUS ORGANIC SOLVENT AT SUBSTANTIALLY ROOM TEMPERATURE A 1-P-NITROPHENYL-2-AMINOPROPANE-1,3DIOL WITH AN ACID ADDITION SALT OF AN IMINO ETHER OF THE FORMULA
References Cited (Backward Citations)
US2562114A
Cited
US2513346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |