Patent US2584112A successfully refreshed from Google Patents.
US2584112A
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Organic phosphines
Assignee: Standard Oil Co
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Filing: 1950-08-30
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Granted: 1952-02-05
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Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:26
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/505; C07F9/5059; C07F9/48; C07F9/5004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR PRODUCING AN ORGANIC PHOSPHINE WHICH COMPRISES CONTACTING AN OLEFIN WITH PHOSPHINE AND A STRONG NON-OXIDIZING ACID CATALYST UNDER REACTION CONDITIONS OF TEMPERATURE AND PRESSURE.
Claim 2
Dependent Claim
27 words
A PROCESS FOR PRODUCING AN ORGANIC PHOSPHINE WHICH COMPRISES CONTACTING AN OLEFIN WITH PHOSPHINE AND A STRONG NON-OXIDIZING ACID CATALYST UNDER REACTION CONDITIONS OF TEMPERATURE AND PRESSURE.
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) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |