Patent FR1275415A successfully refreshed from Google Patents.
Patent US3763105A successfully refreshed from Google Patents.
US3763105A
Expired / Lapsed
US
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Shaped structure of trioxane and polyacetaldehyde
Assignee: Celanese Corp
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Filing: 1972-03-17
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Granted: 1973-10-02
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Expires: 1992-03-17
Abstract
Abstract THIS APPLICATION DISCLOSES A PROCESS OF PREPARING A SELF-SUPPORTING SHAPED STRUCTURE WHICH COMPRISES POLYMERIZING A SOLID PHASE MONOMER IN THE PRESENCE OF A FLUID CATALYST. SPECIFICALLY, TRIOXANE IS MIXED WITH A RESINOUS BINDER AND THEN POLYMERIZED IN THE PRESENCE OF BORON FLUORIDE. ALSO DISCLOSED IS THE COPOLYMERIZATION OF TRIOXANE WITH DIEPOXIDES.
Inventors
- 👤 S Jamison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/26; C08G; C08G2/00; C08G2/10; C08G2/38
Claims Analysis
Total Claims: 0
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |