Patent US5060034A successfully refreshed from Google Patents.
US3318655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene-polycarbonate mixed resin fiber, its production and dyeing thereof
Assignee: Fujibo Holdings Inc
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Filing: 1960-12-15
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Granted: 1967-05-09
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Expires: 1980-12-15
Abstract
No abstract record available.
Inventors
- 👤 Naka Morio
- 👤 Nakajima Osamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:12
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L69/00; D; D01; D01F; D01F6/00; D01F6/44; D01F6/46; C08L2203/00; C08L2203/12; Y; Y10; Y10S; Y10S8/00; Y10S8/908; Y10S8/909; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
SPUN FIBER CONSISTING ESSENTIALLY OF A MOMOGENEOUS ADMIXTURE OF CRYSTALLINE POLYPROPYLENE AND FROM 1 TO 20% BY WEIGHT OF 4,4''-DIHYDROXY-DIPHENYL-2,2-PORPANE POLYCARBONIC ACID ESTER RESIN HAVING A SOFTENING POINT OF 100 TO 300*C.
Claim 2
Dependent Claim
32 words
SPUN FIBER CONSISTING ESSENTIALLY OF A MOMOGENEOUS ADMIXTURE OF CRYSTALLINE POLYPROPYLENE AND FROM 1 TO 20% BY WEIGHT OF 4,4''-DIHYDROXY-DIPHENYL-2,2-PORPANE POLYCARBONIC ACID ESTER RESIN HAVING A SOFTENING POINT OF 100 TO 300*C.
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) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |