US3416941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of a bearing surface on a steel article including a single sintered layer of bronze particles and a layer of polytetrafluoroethylene
Assignee: Daikin Industries Ltd
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Filing: 1964-05-11
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Granted: 1968-12-17
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Mizuno Koichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:57
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/02; B22F7/04; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2691814A
Cited
US2995462A
Cited
US2972551A
Cited
US3271653A
Cited
US3211325A
Cited
US3143241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |