US3806325A
Expired / Lapsed
US
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Sintered alloy having wear resistance at high temperature comprising fe-mo-c alloy skeleton infiltrated with cu or pb base alloys,sb,cu,or pb
Assignee: Toyota Motor Corp
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Filing: 1972-01-11
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Granted: 1974-04-23
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Expires: 1992-01-11
Abstract
Abstract THE PRESENT INVENTION RELATES TO IRON-BASE SINTERED ALLOYS HAVING EXCELLENT WEAR RESISTANCE AT HIGH TEMPERATURE, AND MORE PARTICULARLY TO ALLOYS ADAPTED FOR FABRICATING VALVE SEAT RINGS OF INTERNAL COMBUSTION ENGINES. THE ALLOYS COMPRISE METALS HAVING LUBRICATING PROPERTIES OR ALLOYS THEROF INFILTRATED INTO PORES OF IRON-BASE SINTERED ALLOYS HAVING HIGH STRENGTH AND WEAR RESISTANCE AT HIGH TEMPERATURE.
Inventors
- 👤 I Niimi
- 👤 Y Serino
- 👤 S Mitani
- 👤 K Hashimoto
- 👤 K Ushitani
- 👤 K Imanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:06
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/02; C; C22; C22C; C22C33/00; C22C33/02; C22C33/0242; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12167; Y10T428/12174
Claims Analysis
Total Claims: 0
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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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |