US3752211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making stretchable zinc fibers
Assignee: Mitsui Kinzoku Co Ltd
•
Filing: 1971-03-01
•
Granted: 1973-08-14
•
Expires: 1991-03-01
Abstract
Abstract A zinc fiber having a superior stretching ability, which is prepared through the steps of: melting an ingot metal having a zinc content of 99.6 percent or more, extruding the resulting melt through a nozzle having a bore diameter in the range of 20250 Mu by the use of an inert gas having a pressure in the range of 0.5-2.0 Kg/cm2, and cooling the resulting extruded fiber by contacting it with an air current flowing crosswise of the fiber at a speed of 3-5 m/sec, said zinc fiber consisting essentially of zinc, having a diameter in the range of 20-250 Mu and having crystalline structure composed of crystals of zinc, the mean size of the crystals being substantially equal to the diameter of the fiber.
Inventors
- 👤 Y Kuniyasu
- 👤 A Matsumoto
- 👤 E Isobe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/165; B; B21; B21C; B21C23/00; B21C23/002; B21C23/009; B21C37/00; B21C37/04; B21C37/045; B21C37/047; B22; B22D; B22D11/00; B22D11/005; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |