US2674610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dihydrocarbonlead dicyanides
Assignee: Ethyl Corp
•
Filing: 1951-02-21
•
Granted: 1954-04-06
•
Expires: 1971-02-21
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Hymin
- 👤 Vincent F Hnizda
- 👤 Calingaert George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:46
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE MANUFACTURE OF ORGANOLEAD DICYANIDES HAVING ATTACHED TO THE LEAD ATOM AN ALKYL GROUP AND A GROUP SELECTGED FROM THE CLASS CONSISTING OF ALKYL GROUPS AND ARYL GROUPS, SAID PROCESS COMPRISING REACTING AN ORGANOLEAD DIHALIDE HAVING ATTACHED TO THE LEAD ATOM AN ALKYL GROUP AND A GROUP SELECTED FROM THE CLASS CONSISTING OF ALKYL GROUPS AND ARYL GROUPS WITH ERING THE THEREBY PRECIPITATED DIORGANOLEAD DICYANIDE.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE MANUFACTURE OF ORGANOLEAD DICYANIDES HAVING ATTACHED TO THE LEAD ATOM AN ALKYL GROUP AND A GROUP SELECTGED FROM THE CLASS CONSISTING OF ALKYL GROUPS AND ARYL GROUPS, SAID PROCESS COMPRISING REACTING AN ORGANOLEAD DIHALIDE HAVING ATTACHED TO THE LEAD ATOM AN ALKYL GROUP AND A GROUP SELECTED FROM THE CLASS CONSISTING OF ALKYL GROUPS AND ARYL GROUPS WITH ERING THE THEREBY PRECIPITATED DIORGANOLEAD DICYANIDE.
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |