US2909556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certificate of correction
Assignee: —
•
Filing: —
•
Granted: 1959-10-20
•
Expires: 1976-10-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:33
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0071; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025; C11B5/0042; C11B5/0057; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
THE METHOD WHICH COMPRISES CONTACTING AN ALPHAOLEFINIC NITRILE OF THE FORMULA RCH=CHCN WHERE R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN ATOMS AND THE METHYL RADICALS, WITH AN ACYL HYDRAZIDE SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULAS
Claim 2
Independent Claim
41 words
THE METHOD WHICH COMPRISES CONTACTING AN ALPHAOLEFINIC NITRILE OF THE FORMULA RCH=CHCN WHERE R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN ATOMS AND THE METHYL RADICALS, WITH AN ACYL HYDRAZIDE SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULAS
Claim 3
Dependent Claim
13 words
AN ACYL 2-(2-CYANOALKYL)HYDRAZIDE SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULAS
Claim 4
Dependent Claim
13 words
AN ACYL 2-(2-CYANOALKYL)HYDRAZIDE SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULAS
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |