US3082256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phosphine oxide compounds
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-07-20
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Granted: 1963-03-19
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Expires: 1979-07-20
Abstract
No abstract record available.
Inventors
- 👤 Harwood Harold James
- 👤 Kenneth A Pollart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:52
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/44; C07F9/30; C07F9/34; C07F9/50; C07F9/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD WHICH COMPRISES REACTING, IN THE PRESENCE OF AN INERT DILUENT, A TRIHYDROCARBYLPHOSPHINE SULFIDE WHEREIN THE HYDROCARBYL RADICAL IS FREE OF ALIPHATIC UNSATURATION AND CONTAINS FROM 1 TO 8 CARBON ATOMS, WITH THIONYL CHLORIDE AND REMOVING FROM THE RESULTING REACTION PRODUCTS A TRIHYDROCARBYLPHOSPHINE OXIDE WHEREIN THE HYDROCARBYL RADICAL IS AS HEREIN DEFINED.
Claim 2
Independent Claim
53 words
THE METHOD WHICH COMPRISES REACTING, IN THE PRESENCE OF AN INERT DILUENT, A TRIHYDROCARBYLPHOSPHINE SULFIDE WHEREIN THE HYDROCARBYL RADICAL IS FREE OF ALIPHATIC UNSATURATION AND CONTAINS FROM 1 TO 8 CARBON ATOMS, WITH THIONYL CHLORIDE AND REMOVING FROM THE RESULTING REACTION PRODUCTS A TRIHYDROCARBYLPHOSPHINE OXIDE WHEREIN THE HYDROCARBYL RADICAL IS AS HEREIN DEFINED.
References Cited (Backward Citations)
DE1056606B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |