Patent US2555167A successfully refreshed from Google Patents.
US2555167A
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Stabilized compositions containing high molecular weight halogenated materials
Assignee: Shell Development Co
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Filing: 1949-07-30
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Granted: 1951-05-29
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Expires: 1969-07-30
Abstract
No abstract record available.
Inventors
- 👤 Christiaan Pieter Van Dijk
- 👤 Voorthuis Heino Tonnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/21; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26; C08K3/32; C08K5/0008; C08K5/005; C08K5/17; C08K5/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A COMPOSITION OF MATTER STABILIZED AGAINST DETERIORATING EFFECTS OF HEAT AND LIGHT COMPRISING ESSENTIALLY A HALOGEN-CONTAINING ORGANIC, SUBSTANCE HAVING A MOLECULAR WEIGHT ABOVE 2000 IN ADMIXTURE WITH A STABILIZING AMOUNT OF AN ALKALINE SUBSTANCE AND A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
41 words
A COMPOSITION OF MATTER STABILIZED AGAINST DETERIORATING EFFECTS OF HEAT AND LIGHT COMPRISING ESSENTIALLY A HALOGEN-CONTAINING ORGANIC, SUBSTANCE HAVING A MOLECULAR WEIGHT ABOVE 2000 IN ADMIXTURE WITH A STABILIZING AMOUNT OF AN ALKALINE SUBSTANCE AND A COMPOUND REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2365400A
Cited
GB571662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |