US3289249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerets
Assignee: Asahi Kasei Corp
•
Filing: 1963-11-26
•
Granted: 1966-12-06
•
Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Nakayama Chozo
- 👤 Kobayashi Hidehiko
- 👤 Ito Shigeo
- 👤 Yokoyama Hiroshi
- 👤 Hirai Tooru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/32; Y; Y10; Y10S; Y10S425/00; Y10S425/217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SPINNERET ADAPTED FOR PRODUCING COMPOSITE FILAMENTS COMPRISING A FIRST BODY HAVING GUIDE PASSAGES FOR SEPARATELY GUIDING FIBER-FORMING LIQUIDS, A SECOND BODY HAVING RELATIVELY CONSTRICTED FLOW PASSAGES DISPOSED DOWNSTREAM OF SAID GUIDE PASSAGES AND IN COMMUNICATION THEREWITH FOR THE FLOW OF SAID FIBER FORMING LIQUIDS, AND MEANS DEFINING ORIFICES LOCATED DOWNSTREAM OF THE GUIDE PASSAGES AND IN COMMUNICATIION THEREWITH FOR LIMITING THE FLOW OF SAID FIBER-FORMING LIQUIDS THERETHROUGH, SAID GUIDE PASSAGES AND FLOW PASSAGES BEING RESPECTIVELY DIMENSIONED TO PRODUCE RESPECTIVE PRESSURE LOSSES IN THE FIBER-FORMING LIQUIDS FLOWING THERETHROUGH, THE RATIO OF THE PRESSURE LOSS IN THE GUIDE PASSAGES RELATIVE TO THAT IN THE FLOW PASSAGES BEING BETWEEN 0.1 AND 4.0
Claim 2
Dependent Claim
110 words
A SPINNERET ADAPTED FOR PRODUCING COMPOSITE FILAMENTS COMPRISING A FIRST BODY HAVING GUIDE PASSAGES FOR SEPARATELY GUIDING FIBER-FORMING LIQUIDS, A SECOND BODY HAVING RELATIVELY CONSTRICTED FLOW PASSAGES DISPOSED DOWNSTREAM OF SAID GUIDE PASSAGES AND IN COMMUNICATION THEREWITH FOR THE FLOW OF SAID FIBER FORMING LIQUIDS, AND MEANS DEFINING ORIFICES LOCATED DOWNSTREAM OF THE GUIDE PASSAGES AND IN COMMUNICATIION THEREWITH FOR LIMITING THE FLOW OF SAID FIBER-FORMING LIQUIDS THERETHROUGH, SAID GUIDE PASSAGES AND FLOW PASSAGES BEING RESPECTIVELY DIMENSIONED TO PRODUCE RESPECTIVE PRESSURE LOSSES IN THE FIBER-FORMING LIQUIDS FLOWING THERETHROUGH, THE RATIO OF THE PRESSURE LOSS IN THE GUIDE PASSAGES RELATIVE TO THAT IN THE FLOW PASSAGES BEING BETWEEN 0.1 AND 4.0
References Cited (Backward Citations)
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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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |