US2710862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of diaryldiazomethanes
Assignee: Schenley Industries Inc
•
Filing: 1953-12-08
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Granted: 1955-06-14
•
Expires: 1973-12-08
Abstract
No abstract record available.
Inventors
- 👤 Schroeder William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:03
CPC Classifications
C; C07; C07C; C07C245/00; C07C245/12; C07C245/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR THE PRODUCTION OF A DIRAYLDIAZOMETHANE WHICH COMPRISES SUBJECTING A SOLUTION OF A BENZOPHENONE HYDRAZONE IN AN INERT ORGANIC SOLVENT TO THE ACTION OF SILVER OXIDE AND SUBSEQUENTLY RECOVERING THE DIARYLDIAZOMETHANE FROM THE RESULTING SOLUTION.
Claim 2
Dependent Claim
37 words
A PROCESS FOR THE PRODUCTION OF A DIRAYLDIAZOMETHANE WHICH COMPRISES SUBJECTING A SOLUTION OF A BENZOPHENONE HYDRAZONE IN AN INERT ORGANIC SOLVENT TO THE ACTION OF SILVER OXIDE AND SUBSEQUENTLY RECOVERING THE DIARYLDIAZOMETHANE FROM THE RESULTING SOLUTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |