Patent US2564194A successfully refreshed from Google Patents.
US2564194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of high molecular weight organic material containing inorganic acid-forming elements
Assignee: Shell Development Co
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Filing: 1951-03-02
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Granted: 1951-08-14
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Expires: 1971-03-02
Abstract
No abstract record available.
Inventors
- 👤 Nie Willem Leendert Johanne De
- 👤 Voorthuis Heino Tonnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A COMPOSITION OF MATTER COMPRISING ORGANIC MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 162 WHICH CONTAINS HALOGEN AS A STRUCTURAL COMPONENT AND TENDS TO RELEASE HYDROGEN HALIDE WITH CONCURRENT DECOMPOSITION IN INTIMATE ADMIXTURE WITH FROM ABOUT 0.2 TO 5% BY WEIGHT OF STABILIZER THEREFOR CONSISTING ESSENTIALLY OF AN EPOXYALKYL POLYETHER OF A POLYHYDRIC PHENOL, WHICH POLYETHERE HAS A BOILING POINT ABOVE 300* C. UNDER NORMAL ATMOSPHERIC PRESSURE, AND WHICH POLYHYDRIC PHENOL CONTAINS UP TO THREE PHENOLIC HYDROXYL GROUPS AND ALSO CONTAINS, BESIDES THE ELEMENTS IN SAID HYDROXYL GROUPS, ONLY ATOMS OF CARBON AND HYDROGEN.
Claim 2
Dependent Claim
95 words
A COMPOSITION OF MATTER COMPRISING ORGANIC MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 162 WHICH CONTAINS HALOGEN AS A STRUCTURAL COMPONENT AND TENDS TO RELEASE HYDROGEN HALIDE WITH CONCURRENT DECOMPOSITION IN INTIMATE ADMIXTURE WITH FROM ABOUT 0.2 TO 5% BY WEIGHT OF STABILIZER THEREFOR CONSISTING ESSENTIALLY OF AN EPOXYALKYL POLYETHER OF A POLYHYDRIC PHENOL, WHICH POLYETHERE HAS A BOILING POINT ABOVE 300* C. UNDER NORMAL ATMOSPHERIC PRESSURE, AND WHICH POLYHYDRIC PHENOL CONTAINS UP TO THREE PHENOLIC HYDROXYL GROUPS AND ALSO CONTAINS, BESIDES THE ELEMENTS IN SAID HYDROXYL GROUPS, ONLY ATOMS OF CARBON AND HYDROGEN.
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |