Patent US3011989A successfully refreshed from Google Patents.
US3011989A
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Method of preparing a homogeneous solution of a polyamide in a hydroxymethyl-dimethyl-meta-dioxane solvent and compositions thereof
Assignee: Atlantic Richfield Co
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Filing: 1961-04-10
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Granted: 1961-12-05
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Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Donald H Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:30
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08J2377/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A HOMOGENEOUS COMPOSITION OF MATTER COMPRISING A MIXTURE OF A LONG CHAIN SYNTHETIC POLYMERIC AMIDE WHICH HAS RECURRING AMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN AND WHICH IS CAPABLE OF BEING FORMED INTO A FILAMENT IN WHICH THE STRUCTURAL ELEMENTS ARE ORIENTED IN THE DIRECTION OF THE AXIS AND A HOYDROXYMETHYL-DIMETHYL-META-DIOXANE SELECTED FROM THE GROUP CONSISTING OF 5-HYDROXYMETHYL-4,4-DIMETHYL - META - DIOXANE, 5 - HYDROXYMETHYL-4,5-DIMETHYL-META-DIOXANE, AND 4 - HYDROXYMETHYL-4,5-DIMETHYL-META-DIOXANE.
Claim 2
Dependent Claim
73 words
A HOMOGENEOUS COMPOSITION OF MATTER COMPRISING A MIXTURE OF A LONG CHAIN SYNTHETIC POLYMERIC AMIDE WHICH HAS RECURRING AMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN AND WHICH IS CAPABLE OF BEING FORMED INTO A FILAMENT IN WHICH THE STRUCTURAL ELEMENTS ARE ORIENTED IN THE DIRECTION OF THE AXIS AND A HOYDROXYMETHYL-DIMETHYL-META-DIOXANE SELECTED FROM THE GROUP CONSISTING OF 5-HYDROXYMETHYL-4,4-DIMETHYL - META - DIOXANE, 5 - HYDROXYMETHYL-4,5-DIMETHYL-META-DIOXANE, AND 4 - HYDROXYMETHYL-4,5-DIMETHYL-META-DIOXANE.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |