Patent US3210446A successfully refreshed from Google Patents.
US3210446A
Expired / Lapsed
US
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Method of molding a thermoplastic foamed article having a core of thermoplastic coated yarns
Assignee: Sekisui Adohfya Kogyo KK
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Filing: 1962-04-11
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Granted: 1965-10-05
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Expires: 1982-04-11
Abstract
No abstract record available.
Inventors
- 👤 Yamakawa Kiyoshi
- 👤 Wada Shiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333; B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; D06M15/227; D06M15/233; D06N; D06N3/00; D06N3/18; D06N3/186; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249948; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/3301; Y10T442/3325
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD FOR PREPARING A LONG, SOFT VINYL CHLORIDE RESIN SPONGE BODY CONTAINING YARNS AS ITS CORE, WHICH COMPRISES IMMERSING A YARN COMPOSED OF MONOFIBERS HAVING INTERSTICES THEREBETWEEN, IN A PLASTISOL OF VINYL CHLORIDE RESIN UNTIL SAID PLASTISOL FULLY PENETRATES INTO THE INTERSTICES BETWEEN THE MONOFIBERS OF THE YARN, GELLING THE PLASTISOL TO FORM AROUND SAID YARN A THIN LAYER OF VINYL CHLORIDE RESIN CONTAINING A PLASTICIZER WHICH IS SUBSTANTIALLY FREE OF AIR BUBBLES, FORMING A LONG YARN GROUP BY ALIGNING A PLURALITY OF THE YARNS COATED WITH THE VINYL CHLORIDE RESIN IN THE DIRECTION OF THEIR LONGITUDINAL AXES, THEREAFTER EXTRUSION-COATING THE ENTIRE SURFACES OF SAID YARN GROUP WITH A LAYER OF VINYL CHLORIDE RESIN CONTAINING A FOAMING AGENT WHICH GENERATES GAS UPON HEATING AND A PLASTICIZER WHILE THE RESIN IS IN A PLASTICIZED STATE BY HEAT, THEREBY TO FIRMLY BOND THE YARNS INTO ONE, COHESIVE BODY.
Claim 2
Independent Claim
147 words
A METHOD FOR PREPARING A LONG, SOFT VINYL CHLORIDE RESIN SPONGE BODY CONTAINING YARNS AS ITS CORE, WHICH COMPRISES IMMERSING A YARN COMPOSED OF MONOFIBERS HAVING INTERSTICES THEREBETWEEN, IN A PLASTISOL OF VINYL CHLORIDE RESIN UNTIL SAID PLASTISOL FULLY PENETRATES INTO THE INTERSTICES BETWEEN THE MONOFIBERS OF THE YARN, GELLING THE PLASTISOL TO FORM AROUND SAID YARN A THIN LAYER OF VINYL CHLORIDE RESIN CONTAINING A PLASTICIZER WHICH IS SUBSTANTIALLY FREE OF AIR BUBBLES, FORMING A LONG YARN GROUP BY ALIGNING A PLURALITY OF THE YARNS COATED WITH THE VINYL CHLORIDE RESIN IN THE DIRECTION OF THEIR LONGITUDINAL AXES, THEREAFTER EXTRUSION-COATING THE ENTIRE SURFACES OF SAID YARN GROUP WITH A LAYER OF VINYL CHLORIDE RESIN CONTAINING A FOAMING AGENT WHICH GENERATES GAS UPON HEATING AND A PLASTICIZER WHILE THE RESIN IS IN A PLASTICIZED STATE BY HEAT, THEREBY TO FIRMLY BOND THE YARNS INTO ONE, COHESIVE BODY.
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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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |