US3639639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cermet having lubricating properties and process
Assignee: Individual
•
Filing: 1969-03-11
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Granted: 1972-02-01
•
Expires: 1989-03-11
Abstract
Abstract AN ANTIFRICTION OBJECT HAVING A POROUS CERMET SURFACE AND A LUBRICATING PLASTIC SUCH AS TEFLON IMPREGNATED IN THE PORES. IN APPLYING THE PROCESS TO MAKE THE OBJECT, THE LUBRICATING PLASTIC MAY BE BURNISHED TO PENETRATE THE PORES. THE CURRENT IMPREGNATED WITH THE LUBRICATING PLASTIC IS HEATED JUST BELOW THE OFF-GASSING TEMPERATURE FOR THE PLASTIC.
Inventors
- 👤 Henry W Mccard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:03
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31725; Y10T428/31739
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |