US2850532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of cycloaliphatic 1, 2-diamines
Assignee: Novartis AG
•
Filing: 1956-06-12
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Granted: 1958-09-02
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Expires: 1976-06-12
Abstract
No abstract record available.
Inventors
- 👤 Simon Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:03
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PROCESS FOR THE MANUFACTURE OF A CYCLOALIPHATIC 1.2-DAIMINE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
13 words
A PROCESS FOR THE MANUFACTURE OF A CYCLOALIPHATIC 1.2-DAIMINE CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
GB649981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |