Patent US3344472A successfully refreshed from Google Patents.
US3344472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing crimped fibers
Assignee: Mitsubishi Chemical Corp
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Filing: 1964-02-18
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Granted: 1967-10-03
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Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 Kitajima Joichi
- 👤 Ueno Keishiro
- 👤 Sugimoto Haruo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:34
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/34; D01D1/00; D01D1/06; D01D1/065; D01D5/22; D01D5/32; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S425/00; Y10S425/217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A SPINNERET ASSEMBLY COMPRISING A FIRST AND SECOND FLUID SUPPLY MEANS, A DISTRIBUTOR COMMON TO SAID FIRST AND SECOND FLUID SUPPLY MEANS AHD AHVING A PLURALITY OF DISTRIBUTION ORIFICES DEFINED THEREBY, A SPINNERET SPACED FROM SAID DISTRIBUTOR AND HAVING A PLURALITY OF EXTRUSION ORIFICES DEFINED THEREBY, A FLUID CARRYING CHAMBER DEFINED BY SAID DISTRIBUTOR AND SPACED SPINNERET, MEANS ASSOCIATED WITH SAID DISTRIBUTOR FOR PROVIDING A FLOW OF SPACED FILAMENTS OF SAID FIRST FLUID, EACH OF SAID FILAMENTS BEING SUBSTANTIALLY ENCASED IN A FLOW OF SAID SECOND FLUID TO FORM BORDERS BETWEEN SAID FLUIDS, THE RATION OF THE NUMBER OF EXTRUSION ORIFICES OF SAID SPINNERET CONTACTED BY SAID FLUID BORDERS TO THE TOTAL NUMBER OF EXTRUSION ORIFICES CONTACTED BY SAID FIRST FLUID ALONE AND SAID SECOND FLUID ALONE BEING 20-85:80-15.
Claim 2
Dependent Claim
129 words
A SPINNERET ASSEMBLY COMPRISING A FIRST AND SECOND FLUID SUPPLY MEANS, A DISTRIBUTOR COMMON TO SAID FIRST AND SECOND FLUID SUPPLY MEANS AHD AHVING A PLURALITY OF DISTRIBUTION ORIFICES DEFINED THEREBY, A SPINNERET SPACED FROM SAID DISTRIBUTOR AND HAVING A PLURALITY OF EXTRUSION ORIFICES DEFINED THEREBY, A FLUID CARRYING CHAMBER DEFINED BY SAID DISTRIBUTOR AND SPACED SPINNERET, MEANS ASSOCIATED WITH SAID DISTRIBUTOR FOR PROVIDING A FLOW OF SPACED FILAMENTS OF SAID FIRST FLUID, EACH OF SAID FILAMENTS BEING SUBSTANTIALLY ENCASED IN A FLOW OF SAID SECOND FLUID TO FORM BORDERS BETWEEN SAID FLUIDS, THE RATION OF THE NUMBER OF EXTRUSION ORIFICES OF SAID SPINNERET CONTACTED BY SAID FLUID BORDERS TO THE TOTAL NUMBER OF EXTRUSION ORIFICES CONTACTED BY SAID FIRST FLUID ALONE AND SAID SECOND FLUID ALONE BEING 20-85:80-15.
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |