Patent US2612488A successfully refreshed from Google Patents.
US2612488A
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Stabilization of organic materials with aryl polyphosphites
Assignee: Standard Oil Development Co
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Filing: 1950-11-02
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Granted: 1952-09-30
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Expires: 1970-11-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:34
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AS A NEW COMPOSITION OF MATTER, AN ARYL POLYPHOSPHITE RESINOUS CONDENSATION PRODUCT PRODUCED BY THE REACTION WHICH COMPRISES CONDENSING AN AROMATIC COMPOUND CONTAINING ONE HYDROXYL GROUP LINKED TO THE AROMATIC NUCLEUS WITH A PHOSPHORUS COMPOUND HAVING THE FORMULA PX3, WHEREIN X IS A HALOGEN RADICAL SELECTED FROM THE GROUP CONSISITING OF CL, BR AND I RADICALS AND CONDENSING THE RESULTING PRODUCT WITH AN AROMATIC COMPOUND HAVING TWO OH GROPS LINKED TO THE AROMATIC NUCLEUS, SAID CONDENSATION PRODUCT CONTAINING THE
Claim 2
Dependent Claim
79 words
AS A NEW COMPOSITION OF MATTER, AN ARYL POLYPHOSPHITE RESINOUS CONDENSATION PRODUCT PRODUCED BY THE REACTION WHICH COMPRISES CONDENSING AN AROMATIC COMPOUND CONTAINING ONE HYDROXYL GROUP LINKED TO THE AROMATIC NUCLEUS WITH A PHOSPHORUS COMPOUND HAVING THE FORMULA PX3, WHEREIN X IS A HALOGEN RADICAL SELECTED FROM THE GROUP CONSISITING OF CL, BR AND I RADICALS AND CONDENSING THE RESULTING PRODUCT WITH AN AROMATIC COMPOUND HAVING TWO OH GROPS LINKED TO THE AROMATIC NUCLEUS, SAID CONDENSATION PRODUCT CONTAINING THE
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) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |