US2819315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
S-benzyloxy-ftz-dinitrostyrenes
Assignee: —
•
Filing: —
•
Granted: 1958-01-07
•
Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/27; C07C205/35; C07C205/36; C07C205/38; C07C201/00; C07C201/06; C07C201/08; C07C201/12; C07C205/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
IN A PROCESS FOR THE PREPARATION OF A 5-BENZYLOXYB,2-DINITROSTYRENE, THE STEPS OF CONDENSIONG A 5-BENZYLOXY2-NITROBENZALDEHYDE WITH A 1-NITROALKANE IN THE PRESENT OF AN ALKALI-METAL HYDROXIDE, ACIDIFYING THE SALT THUS PRODUCED WITH AN INORGANIC ACID, AND DEHYDRATING THE MIXTURE THUS PRODUCED WITH ACETIC ANHYDRIDE TO YIELD A 5-BENZYLOXY-B-2-DINITROSTYRENE.
Claim 2
Dependent Claim
47 words
IN A PROCESS FOR THE PREPARATION OF A 5-BENZYLOXYB,2-DINITROSTYRENE, THE STEPS OF CONDENSIONG A 5-BENZYLOXY2-NITROBENZALDEHYDE WITH A 1-NITROALKANE IN THE PRESENT OF AN ALKALI-METAL HYDROXIDE, ACIDIFYING THE SALT THUS PRODUCED WITH AN INORGANIC ACID, AND DEHYDRATING THE MIXTURE THUS PRODUCED WITH ACETIC ANHYDRIDE TO YIELD A 5-BENZYLOXY-B-2-DINITROSTYRENE.
References Cited (Backward Citations)
US2698345A
Cited
US2601282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |