Patent US3262908A successfully refreshed from Google Patents.
US3262908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic masses based on high molecular weight polyoxymethylenes stabilized with nitro aromatic compounds
Assignee: Evonik Operations GmbH
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Filing: 1963-08-12
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Granted: 1966-07-26
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Behrends Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/03; C08G; C08G59/00; C08G59/14; C08G59/1405; C08G59/1422; C08K5/0008; C08K5/005; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A POLYOXYMETHYLENE COMPOSITION CAPABLE OF BEING SHAPED MECHANICALLY AT ELEVATED TEMPERATURES IN CONTACT WITH AIR COMPRISING A POLYOXYMETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 10,000 AND 100,000 SELECTED FROM THE GROUP CONSISTING OF POLYOXYMETHYLENE HOMOPOLYMERS HAVING THEIR TERMINAL HYDROXY GROUPS ESTERIFIED AND POLYOXYMETHYLENES HAVING THEIR TERMINAL HYDROXY GROUPS ETHERIFIED AND 0.01-10% BY WEIGHT BASED UPON THE POLYOXYMETHYLENE OF A NEUTRAL AROMATIC COMPOUND HAVING AN EVAPORATION POINT ABOUT 210*C. SELECTED FROM THE GROUP CONSISTING OF O-DINITROBENZENE, MDINITROBENZENE, P-DINITROBENZENE, O-CHLORONITROBENZENE, M-CHLORONITROBENZENE, P-CHLORONITROBENZENE, O-BROMONITROBENZENE, M-BROMONITROBENZENE, P-BROMONITROBENZENE, M-NITROANISOLE, P-NITROANISOLE, 2-4-DINITROANISOLE AND 2,4-DINITROCHLOROBENZENE.
Claim 2
Dependent Claim
88 words
A POLYOXYMETHYLENE COMPOSITION CAPABLE OF BEING SHAPED MECHANICALLY AT ELEVATED TEMPERATURES IN CONTACT WITH AIR COMPRISING A POLYOXYMETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 10,000 AND 100,000 SELECTED FROM THE GROUP CONSISTING OF POLYOXYMETHYLENE HOMOPOLYMERS HAVING THEIR TERMINAL HYDROXY GROUPS ESTERIFIED AND POLYOXYMETHYLENES HAVING THEIR TERMINAL HYDROXY GROUPS ETHERIFIED AND 0.01-10% BY WEIGHT BASED UPON THE POLYOXYMETHYLENE OF A NEUTRAL AROMATIC COMPOUND HAVING AN EVAPORATION POINT ABOUT 210*C. SELECTED FROM THE GROUP CONSISTING OF O-DINITROBENZENE, MDINITROBENZENE, P-DINITROBENZENE, O-CHLORONITROBENZENE, M-CHLORONITROBENZENE, P-CHLORONITROBENZENE, O-BROMONITROBENZENE, M-BROMONITROBENZENE, P-BROMONITROBENZENE, M-NITROANISOLE, P-NITROANISOLE, 2-4-DINITROANISOLE AND 2,4-DINITROCHLOROBENZENE.
References Cited (Backward Citations)
US2848437A
Cited
US2871220A
Cited
US2893972A
Cited
US3050500A
Cited
US3174937A
Cited
US3081280A
Cited
US3079366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |