US2726433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for shaping ceramic articles
Assignee: Motors Liquidation Co
•
Filing: 1951-09-18
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Granted: 1955-12-13
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Expires: 1971-09-18
Abstract
No abstract record available.
Inventors
- 👤 Skunda Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:33
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/12; B28B11/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR MANUFACTURING SPARK PLUG INSULATORS COMPRISING THE STEPS OF FORMING A MIXTURE OF CERAMIC MATERIAL AND HEAT-SOFTENING RESIN BINDER, FORMING AN ELONGATED BLANK FROM SAID MIXTURE, ROTATING SAID BLANK ON ITS LONGITUDINAL AXIS, HEATING THE SURFACE OF THE ROTATED BLANK TO ABOVE THE SOFTENING TEMPERATURE OF THE RESIN BINDER, SKIVING PORTIONS OF SAID HEATED SURFACE TO SHAPE SAID BLANK INTO AN INSULATOR OF DESIRED CONTOUR, AND FIRING SAID INSULATOR TO REMOVE THE BINDER AND SINTER SAID INSULATOR INTO A COHERENT BODY.
Claim 2
Dependent Claim
83 words
A PROCESS FOR MANUFACTURING SPARK PLUG INSULATORS COMPRISING THE STEPS OF FORMING A MIXTURE OF CERAMIC MATERIAL AND HEAT-SOFTENING RESIN BINDER, FORMING AN ELONGATED BLANK FROM SAID MIXTURE, ROTATING SAID BLANK ON ITS LONGITUDINAL AXIS, HEATING THE SURFACE OF THE ROTATED BLANK TO ABOVE THE SOFTENING TEMPERATURE OF THE RESIN BINDER, SKIVING PORTIONS OF SAID HEATED SURFACE TO SHAPE SAID BLANK INTO AN INSULATOR OF DESIRED CONTOUR, AND FIRING SAID INSULATOR TO REMOVE THE BINDER AND SINTER SAID INSULATOR INTO A COHERENT BODY.
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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) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |