US3235624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyoxymethylene compositions
Assignee: Tenneco Chemicals Inc
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Filing: 1962-12-04
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Granted: 1966-02-15
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Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 Green Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/36; C08K5/37; C08K5/372; C08L; C08L59/00; C08L59/02; C08L77/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A THERMALLY-STABLE RESINOUS COMPOSITION COMPRISING POLYOXYMETHYLENE HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF AT LEAST 15,000 AND A STABILIZER MIXTURE COMPRISING (A) A SUPERPOLYAMIDE WHICH IS A MACROMOLECULAR CONDENSATION POLYMER THAT HAS RECURRING CARBOXYAMIDE LINKAGES AS INTEGRAL PORTIONS OF THE POLYMER CHAIN AND WHICH HAS A DEGREE OF POLYMERIZATION OF APPROXIMATELY 100 TO 200; (B) A PHENOLIC ANTIOXIDANT HAVING THE FORMULA
Claim 2
Dependent Claim
61 words
A THERMALLY-STABLE RESINOUS COMPOSITION COMPRISING POLYOXYMETHYLENE HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF AT LEAST 15,000 AND A STABILIZER MIXTURE COMPRISING (A) A SUPERPOLYAMIDE WHICH IS A MACROMOLECULAR CONDENSATION POLYMER THAT HAS RECURRING CARBOXYAMIDE LINKAGES AS INTEGRAL PORTIONS OF THE POLYMER CHAIN AND WHICH HAS A DEGREE OF POLYMERIZATION OF APPROXIMATELY 100 TO 200; (B) A PHENOLIC ANTIOXIDANT HAVING THE FORMULA
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |