US3430289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparing high purity fine powder of low-melting metals
Assignee: Toho Zinc Co Ltd
•
Filing: 1965-11-01
•
Granted: 1969-03-04
•
Expires: 1985-11-01
Abstract
No abstract record available.
Inventors
- 👤 Michinosuke Aikawa
- 👤 Mirei Kojima
- 👤 Chushichi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:21
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US954451A
Cited
US1501449A
Cited
FR551425A
Cited
US1856679A
Cited
US2059089A
Cited
US2638626A
Cited
US3354939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |