US3293219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyacetal terpolymers containing randomly recurring groups derived from a methylene-bis-
Assignee: Tenneco Chemicals Inc
•
Filing: 1963-07-10
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Granted: 1966-12-20
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Roy T Gottesman
- 👤 Sidi Henri
- 👤 Barth Robert Hood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:49
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/18; C07D317/22; C08G2/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A NORMALLY SOLID, THERMALLY STABLE, POLYACETAL TERPOLYMER CONSISTING ESSENTIALLY OF (A) RANDOMLY RECURRING OXYMETHYLENE GROUPS, (B) FROM ABOUT 0.1 TO ABOUT 15 PERCENT BY WEIGHT OF RANDOMLY RECURRING OXYALKYLENE GROUPS DERIVED FROM A CYCLIC ETHER HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
39 words
A NORMALLY SOLID, THERMALLY STABLE, POLYACETAL TERPOLYMER CONSISTING ESSENTIALLY OF (A) RANDOMLY RECURRING OXYMETHYLENE GROUPS, (B) FROM ABOUT 0.1 TO ABOUT 15 PERCENT BY WEIGHT OF RANDOMLY RECURRING OXYALKYLENE GROUPS DERIVED FROM A CYCLIC ETHER HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
DE906514C
Cited
US3027352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |