US3359344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed spun fibers containing polyamides or polyesters and a second component selected from the group of polyethylene, polypropylene or polystyrene
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1964-07-06
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Granted: 1967-12-19
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Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Fukushima Osamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:28
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/04; D01D5/00; D01D5/08; D01F; D01F6/00; D01F6/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR MANUFACTURING SHAPED ARTICLES BY MIXING (1) A SPUN FIBER CONSISTING ESSENTIALLY OF A FIRST POLYMER HAVING A MELTING POINT LOWER THAN 170*C. AND SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYSTYRENE BLENDED WITH A SECOND POLYMER HAVING A MELTING POINT HIGHER THAN 170*C. AND SELECTED FROM THE GROUP CONSISTING OF POLYAMIDES AND POLYESTERS WITH (2) AN ADDITIONAL AMOUNT OF SAID FIRST POLYMER, AND SHAPING THE MIXTURE AT A TEMPERATURE LOWER THAN THE MELTING POINT OF SAID SECOND POLYMER, SAID FIRST POLYMER BEING PRESENT IN A MAJOR AMOUNT IN THE SHAPED ARTICLE.
Claim 2
Dependent Claim
96 words
A PROCESS FOR MANUFACTURING SHAPED ARTICLES BY MIXING (1) A SPUN FIBER CONSISTING ESSENTIALLY OF A FIRST POLYMER HAVING A MELTING POINT LOWER THAN 170*C. AND SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYSTYRENE BLENDED WITH A SECOND POLYMER HAVING A MELTING POINT HIGHER THAN 170*C. AND SELECTED FROM THE GROUP CONSISTING OF POLYAMIDES AND POLYESTERS WITH (2) AN ADDITIONAL AMOUNT OF SAID FIRST POLYMER, AND SHAPING THE MIXTURE AT A TEMPERATURE LOWER THAN THE MELTING POINT OF SAID SECOND POLYMER, SAID FIRST POLYMER BEING PRESENT IN A MAJOR AMOUNT IN THE SHAPED ARTICLE.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |