US3225414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for slip casting ceramic electrical ware
Assignee: McGraw Edison Co
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Filing: 1962-11-01
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Granted: 1965-12-28
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Dean John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:18
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26; B28B1/265; H; H01; H01B; H01B19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A MOLD FOR SLIP CASTING CERAMIC OBJECTS COMPRISING: A LOWER OBJECT FORMING POROUS MOLD PORTION DEFINING A VERTICALLY EXTENDING CAVITY, HAVING A CASTING WELL COMMUNICATING WITH SAID CAVITY THROUGH AN UPPER WALL OF SAID OBJECT FORMING PORTION; A RESERVOIR DISPOSED ABOVE SAID OBJECT FORMING MOLD PORTION IN FLUID COMMUNICATION WITH SAID CAVITY THROUGH SAID CASTING WELL; A LOWER PASSAGE EXTENDING THROUGH SAID OBJECT FORMING MOLD PORTION IN FLUID COMMUNICATION WITH SAID CAVITY ADJACNET TO THE LOWERMOST PORTION THEREOF, AND SELECTIVELY OPERABLE CLOSURE MEANS MOVABLE TRANSVERSELY OF SAID LOWER PASSAGEWAY TO INTERRUPT FLUID COMMUNICATION THROUGH SAID LOWER PASSAGE.
Claim 2
Dependent Claim
97 words
A MOLD FOR SLIP CASTING CERAMIC OBJECTS COMPRISING: A LOWER OBJECT FORMING POROUS MOLD PORTION DEFINING A VERTICALLY EXTENDING CAVITY, HAVING A CASTING WELL COMMUNICATING WITH SAID CAVITY THROUGH AN UPPER WALL OF SAID OBJECT FORMING PORTION; A RESERVOIR DISPOSED ABOVE SAID OBJECT FORMING MOLD PORTION IN FLUID COMMUNICATION WITH SAID CAVITY THROUGH SAID CASTING WELL; A LOWER PASSAGE EXTENDING THROUGH SAID OBJECT FORMING MOLD PORTION IN FLUID COMMUNICATION WITH SAID CAVITY ADJACNET TO THE LOWERMOST PORTION THEREOF, AND SELECTIVELY OPERABLE CLOSURE MEANS MOVABLE TRANSVERSELY OF SAID LOWER PASSAGEWAY TO INTERRUPT FLUID COMMUNICATION THROUGH SAID LOWER PASSAGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |