US2531739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing thermoplastic material
Assignee: Nixon Nitration Works
•
Filing: 1946-02-08
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Granted: 1950-11-28
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Expires: 1966-02-08
Abstract
No abstract record available.
Inventors
- 👤 Camillo D Orsini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:04
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/065; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/345; B29C48/36; B29C48/395; B29C48/50; B29C48/69; B29C48/693; B29C48/04; B29C48/06; B29C48/07; B29C48/08; B29C48/09; Y; Y10; Y10S; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE PROCESS OF FORMING THERMOPLASTIC PLASTICIZED STRIPS COMPRISING THE STEPS OF MIXING THE UNPLASTICIZED THERMOPLASTIC MATERIAL WITH A SUITABLE PLASTICIZER AND EVAPORABLE SOLVENT UNDER REDUCED PRESSURE IN A MIXER PROVIDED WITH AGITATING BLADES UNTIL THE THERMOPLASTIC AND OTHER MATERIALS ARE IN A WORKABLE MASS SUITABLE FOR BEING EXTRUDED, FEEDING THE MIXED MASS DIRECTLY FROM THE MIXER TO A HEATED SCREW STUFFER TYPE EXTRUSION MACHINE CONTAINING A FILTER, EXTRUDING AND FILTERING THE MIXED MASS IN A HEATED CONDITION FOR HOMOGENIZING SAID MIXED MASS AND FORMING IT INTO A STRIP, AND SUBDIVIDING THE EXTRUDED STRIP INTO SUITABLE LENGTHS.
Claim 2
Dependent Claim
96 words
THE PROCESS OF FORMING THERMOPLASTIC PLASTICIZED STRIPS COMPRISING THE STEPS OF MIXING THE UNPLASTICIZED THERMOPLASTIC MATERIAL WITH A SUITABLE PLASTICIZER AND EVAPORABLE SOLVENT UNDER REDUCED PRESSURE IN A MIXER PROVIDED WITH AGITATING BLADES UNTIL THE THERMOPLASTIC AND OTHER MATERIALS ARE IN A WORKABLE MASS SUITABLE FOR BEING EXTRUDED, FEEDING THE MIXED MASS DIRECTLY FROM THE MIXER TO A HEATED SCREW STUFFER TYPE EXTRUSION MACHINE CONTAINING A FILTER, EXTRUDING AND FILTERING THE MIXED MASS IN A HEATED CONDITION FOR HOMOGENIZING SAID MIXED MASS AND FORMING IT INTO A STRIP, AND SUBDIVIDING THE EXTRUDED STRIP INTO SUITABLE LENGTHS.
References Cited (Backward Citations)
US1781648A
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US2039162A
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US2022895A
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US2103546A
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US2146532A
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US2319859A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |