US2903482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of oximes
Assignee: BASF SE
•
Filing: 1953-06-16
•
Granted: 1959-09-08
•
Expires: 1973-06-16
Abstract
No abstract record available.
Inventors
- 👤 Hopff Heinrich
- 👤 Schickh Otto Von
- 👤 Riedl Hans-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:04
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/08; C07C249/00; C07C249/04; C07C251/00; C07C251/32; C07C251/34; C07C251/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS FOR THE PREPARATION OF CYCLOHEXANONEOXIME WHICH COMPRISES REDUCING AN ALKALI METAL SALT OF NITROCYCLOHEXANE WITH AN EQUIVALENT AMOUNT OF AN ALKALI METAL THIOSULFATE IN AN AQUEOUS MEDIUM IN THE PRESENCE OF EXCESS MINERAL ACID.
Claim 2
Dependent Claim
47 words
A PROCESS FOR THE PRODUCTION OF KETOXIMES WHICH COMPRISES REACTING A MEMBER OF THE GROUP CONSISTING OF THE ALKALI METAL, ALKALINE EARTH METAL AND AMMONIUM SALTS OF THE 2-NITROPROPANE, SECONDARY NITROBUTANE, NITROPENTANE, AND NITROHEXANE, NITROCYCLOHEXANE, METHYL NITROCYCLOHEXANE AND NITROCYCLOPENTANE WITH THIOSULFURIC ACID IN A MINERAL ACID MEDIUM.
References Cited (Backward Citations)
AT171709B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |