Patent US3261805A successfully refreshed from Google Patents.
US3261805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxymethylene stabilized with aromatic nitro compounds
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-01-21
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Granted: 1966-07-19
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Griffiths Vivien
- 👤 Mcgowan John Carswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A COMPOSITION COMPRISING A HIGH MOLECULAR WEIGHT OXYMETHYLENE POLYMER AND 0.05% TO 5% BY WEIGHT OF THE POLYMER OF AN AROMATIC COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 220 AND CONTAINING AT LEAST ONE NITRO GROUP ATTACHED TO A CARBON ATOM OF THE AROMATIC NUCLEUS AND AT LEAST ONE OTHER MONOVALENT RADICAL ATTACHED TO ANOTHER CARBON ATOM OF THE SAME AROMATIC NUCLEUS, WHERE THE ATOMATIC NITRO COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULAE:
Claim 2
Dependent Claim
79 words
A COMPOSITION COMPRISING A HIGH MOLECULAR WEIGHT OXYMETHYLENE POLYMER AND 0.05% TO 5% BY WEIGHT OF THE POLYMER OF AN AROMATIC COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 220 AND CONTAINING AT LEAST ONE NITRO GROUP ATTACHED TO A CARBON ATOM OF THE AROMATIC NUCLEUS AND AT LEAST ONE OTHER MONOVALENT RADICAL ATTACHED TO ANOTHER CARBON ATOM OF THE SAME AROMATIC NUCLEUS, WHERE THE ATOMATIC NITRO COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULAE:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |