US3050522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of substituted organic phosphine derivatives
Assignee: Albright and Wilson Mfg Ltd
•
Filing: 1959-07-10
•
Granted: 1962-08-21
•
Expires: 1979-07-10
Abstract
No abstract record available.
Inventors
- 👤 Coates Harold
- 👤 Lawless John Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:37
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/433; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5004; C07F9/547; C07F9/6515; C07F9/6521; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G79/00; C08G79/02; C08G79/06; D06M15/431
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE PRODUCTION OF AMIDOMETHYLPHOSPHINES WHICH CONSISTS ESSENTIALLY OF REACTING A PHOSPHINE OF THE FORMULA RNPH3-N WHEREIN R REPRESENTS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL HAVING FROM 1 TO 4 CARBON ATOMS AND PHENYL, AND N IS AN INTEGER RANGING FROM 0 TO 2 WITH HEXAMETHYLOLMELAMINE, IN SOLUTION IN AN INERT SOLVENT AND AT A TEMPERTURE RANGING FROM ROOM TEMPERTURE TO ABOUT 80*C.
Claim 2
Dependent Claim
5 words
THE COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |