US3275604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moldable oxymethylene copolymers and method of preparing same
Assignee: Celanese Corp
•
Filing: 1963-07-19
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Granted: 1966-09-27
•
Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 Kray Raymond Joseph
- 👤 Stevenson Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:54
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A NORMALLY SOLID, MOLDABLE COPOLYMER COMPRISING: (A) AT LEAST 60 MOL PERCENT OF RECURRING OXYMETHYLENE GROUPS AND (B) OXYTHYLENE GROUPS POSITIONED IN THE POLYMERIC CHAIN SAID OXYETHYLENE GROUPS HAVING A -CH2OR GROUP PENDANT THEREFROM AND DIRECTLY ATTACHED TO A CARBON ATOM OF SAID OXYETHYLENE GROUP, WHEREIN SAID R GROUP IS A MONOVALENT HYDROCARBON RADICAL.
Claim 2
Dependent Claim
54 words
A NORMALLY SOLID, MOLDABLE COPOLYMER COMPRISING: (A) AT LEAST 60 MOL PERCENT OF RECURRING OXYMETHYLENE GROUPS AND (B) OXYTHYLENE GROUPS POSITIONED IN THE POLYMERIC CHAIN SAID OXYETHYLENE GROUPS HAVING A -CH2OR GROUP PENDANT THEREFROM AND DIRECTLY ATTACHED TO A CARBON ATOM OF SAID OXYETHYLENE GROUP, WHEREIN SAID R GROUP IS A MONOVALENT HYDROCARBON RADICAL.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |