US2941001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of aminophosphines
Assignee: American Potash and Chemical Corp
•
Filing: 1956-06-25
•
Granted: 1960-06-14
•
Expires: 1976-06-25
Abstract
No abstract record available.
Inventors
- 👤 Anton B Burg
- 👤 Jr Peter J Slota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:17
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
AS A NEW COMPOSITION OF MATTER: DIMETHYLAMINODIMETHYLPHOSPHINE.
Claim 2
Dependent Claim
7 words
AS A NEW COMPOSITION OF MATTER: DIMETHYLAMINODIMETHYLPHOSPHINE.
Claim 3
Dependent Claim
64 words
A PROCESS COMPRISING: CONTACTING A MONOAMINODICHLOROPHOSPHINE OF THE GENERAL FORMULA RR''NPC12 WHEREIN SAID R AND R'' ARE LOWER ALKYL WITH A GRIGNARD REAGENT OF THE TYPE R"MGX WHEREIN X IS A HALOGEN AND WHEREIN R" IS AN ALKYL RADICAL IN AN ETHEREAL SOLUTION AT A TEMPERATURE OF ABOUT-78*C., AND THEREAFTER WARMING THE MIXTURE SO FORMED WHEREBY TO FORM AN AMINOPHOSPHINE OF THE FORMULA RR''NPR"2.
Claim 4
Dependent Claim
64 words
A PROCESS COMPRISING: CONTACTING A MONOAMINODICHLOROPHOSPHINE OF THE GENERAL FORMULA RR''NPC12 WHEREIN SAID R AND R'' ARE LOWER ALKYL WITH A GRIGNARD REAGENT OF THE TYPE R"MGX WHEREIN X IS A HALOGEN AND WHEREIN R" IS AN ALKYL RADICAL IN AN ETHEREAL SOLUTION AT A TEMPERATURE OF ABOUT-78*C., AND THEREAFTER WARMING THE MIXTURE SO FORMED WHEREBY TO FORM AN AMINOPHOSPHINE OF THE FORMULA RR''NPR"2.
References Cited (Backward Citations)
US1990609A
Cited
US2146584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |