US2822237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing filament of vinyl chloride polymer
Assignee: Individual
•
Filing: 1955-02-21
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Granted: 1958-02-04
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Iwamae Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:20
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/229; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/36; B29C48/395; D01; D01D; D01D1/00; D01D1/04; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; D01F6/28; D01F6/32; D02J1/223; D02J1/228
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR THE PRODUCTION OF FILAMENTS OF A HIGH MOLECULAR WEIGHT VINYL CHLORIDE POLYMER, WHICH COMPRISES THE STEPS OF MELTING A MIXTURE OF A HIGH MOLECULAR WEIGHT VINYL CHLORIDE POLYMER AND A PLASTICIZER AND A HEAT STABILIZER BY HEATING THE SAME, SPINNING FILAMENTS FROM THE RESULTING MOLTEN SUBSTANCE, AND THEREAFTER CONTACTING SAID FILAMENTS WITH VINYL CHLORIDE MONOMER TO REMOVE AT LEAST A PORTION OF SAID PLASTICIZER AND HEAT STABILIZER FROM SAID FILAMENTS.
Claim 2
Dependent Claim
73 words
A PROCESS FOR THE PRODUCTION OF FILAMENTS OF A HIGH MOLECULAR WEIGHT VINYL CHLORIDE POLYMER, WHICH COMPRISES THE STEPS OF MELTING A MIXTURE OF A HIGH MOLECULAR WEIGHT VINYL CHLORIDE POLYMER AND A PLASTICIZER AND A HEAT STABILIZER BY HEATING THE SAME, SPINNING FILAMENTS FROM THE RESULTING MOLTEN SUBSTANCE, AND THEREAFTER CONTACTING SAID FILAMENTS WITH VINYL CHLORIDE MONOMER TO REMOVE AT LEAST A PORTION OF SAID PLASTICIZER AND HEAT STABILIZER FROM SAID FILAMENTS.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |