Patent US3197420A successfully refreshed from Google Patents.
US3197420A
Expired / Lapsed
US
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Process for polymerizing 1, 3, 6-trioxacyclo-octanes
Assignee: Hoechst AG
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Filing: 1960-07-29
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Granted: 1965-07-27
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Expires: 1980-07-29
Abstract
No abstract record available.
Inventors
- 👤 Weissermel Klaus
- 👤 Rciher Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:22
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G4/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
A PROCESS WITH COMPRISES POLYMERIZING A 1,3,6TRIOXA-CYCL-OCTANE IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING (1) AN ORGANO ALUMINUM COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
23 words
A PROCESS WITH COMPRISES POLYMERIZING A 1,3,6TRIOXA-CYCL-OCTANE IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING (1) AN ORGANO ALUMINUM COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
18 words
THERMOPLASTIC, RUBBER-ELASTIC HOMOPOLYMER OF A 1,3,6-TRIOXA-CYCLO-OCTANE HAVING A REDUCED VISCOSITY GREATER THAN 2.5, DETERMINED IN BENZENE AT 25*C.
Claim 4
Dependent Claim
18 words
THERMOPLASTIC, RUBBER-ELASTIC HOMOPOLYMER OF A 1,3,6-TRIOXA-CYCLO-OCTANE HAVING A REDUCED VISCOSITY GREATER THAN 2.5, DETERMINED IN BENZENE AT 25*C.
References Cited (Backward Citations)
GB741702A
Cited
DE1134833B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |