US2813775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming films and filaments directly from polymer intermediates
Assignee: EIDP Inc
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Filing: 1955-02-21
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Granted: 1957-11-19
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Steuber Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D01D; D01D5/00; D01D5/38; D01F6/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS WHICH COMPRISES FORMING A SOLID SHAPED STRUCTURE BY COMBINING AT LEAST TWO LIQUID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES, ONE OF WHICH CONTAINS AT LEAST TWO ACTIVE HYDROGENS MORE REACTIVE THAN ALCOHOLIC HYDROGEN, WHEREAS ITS COMPLEMENT CONTAINS AT LEAST TWO REACTIVE GROUPS CAPABLE OF REACTING WITH ALCOHOL AT ROOM TEMPERATURE TO FORM AN ESTER, AND AT LEAST ONE OF THE SAID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES BEING A MULTIFUNCTIONAL ORGANIC MACROMOLECULE POSSESSING RECURRING AMIDE TYPE LINKAGES OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
80 words
A PROCESS WHICH COMPRISES FORMING A SOLID SHAPED STRUCTURE BY COMBINING AT LEAST TWO LIQUID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES, ONE OF WHICH CONTAINS AT LEAST TWO ACTIVE HYDROGENS MORE REACTIVE THAN ALCOHOLIC HYDROGEN, WHEREAS ITS COMPLEMENT CONTAINS AT LEAST TWO REACTIVE GROUPS CAPABLE OF REACTING WITH ALCOHOL AT ROOM TEMPERATURE TO FORM AN ESTER, AND AT LEAST ONE OF THE SAID COMPLEMENTARY REACTIVE POLYMER INTERMEDIATES BEING A MULTIFUNCTIONAL ORGANIC MACROMOLECULE POSSESSING RECURRING AMIDE TYPE LINKAGES OF THE CLASS CONSISTING OF
References Cited (Backward Citations)
US2708617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |