US3152385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic tools
Assignee: Saint Gobain Abrasives Inc
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Filing: 1961-11-07
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Granted: 1964-10-13
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jr William Maxwell Wheildon
- 👤 George W Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:19
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/145; B23B2200/00; B23B2200/24; B23B2200/245; B23B2226/00; B23B2226/18; Y; Y10; Y10T; Y10T407/00; Y10T407/27; Y10T407/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A CERAMIC CUTTING TOOL HAVING AT LEAST ONE CUTTING EDGE THEREON, SAID EDGE HAVING A CONVEX LAND THEREON FORMED BY TUMBLING WITH LOOSE ABRASIVE PARTICLES AND HAVING A RADIUS OF CURVATURE OF FROM .002" TO .012".
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |