Patent US3288757A successfully refreshed from Google Patents.
US3288757A
Expired / Lapsed
US
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Process for producing polymeric products of trioxane
Assignee: British Industrial Plastics Ltd
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Filing: 1963-03-18
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Granted: 1966-11-29
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Wilson Walter
- 👤 May Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:57
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/10; C08G2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR THE PREPARATION OF A TRIOXANE POLYMER COMPRISING POLYMERIZING TRIOXANE, WITH FROM 0 TO ABOUT 50% OF A COMONOMER, AT A TEMPERATURE OF -100 TO 100* C. UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS IN THE PRESENCE OF AN ELECTROPHILIC CATALYST IN WHICH THE CATALYST IN A COMPOUND HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
56 words
A PROCESS FOR THE PREPARATION OF A TRIOXANE POLYMER COMPRISING POLYMERIZING TRIOXANE, WITH FROM 0 TO ABOUT 50% OF A COMONOMER, AT A TEMPERATURE OF -100 TO 100* C. UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS IN THE PRESENCE OF AN ELECTROPHILIC CATALYST IN WHICH THE CATALYST IN A COMPOUND HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |