Patent US3706388A successfully refreshed from Google Patents.
Patent US3175894A successfully refreshed from Google Patents.
US3175894A
Expired / Lapsed
US
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Mixture of fused alumina and fused zirconia granules in bonded abrasive articles
Assignee: Unifrax I LLC
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Filing: 1963-02-26
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Granted: 1965-03-30
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Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Donald G Foot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:45
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/285; C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
AN ABRASIVE BODY CONSISTING ESSENTAILLY OF ABRASIVE GRAIN AND A THERMOSETTING RESINOID BOND THEREFOR, SAID GRAIN CONSISTING ESSENTAILLY OF A MIXTURE OF ABOUT 85% TO ABOUT 15% BY VOLUME FUSED ALUMINA GRAIN AND ABOUT 15% TO ABOUT 85% BY VOLUME OF FUSED ZIRCONIA GRAIN.
Claim 2
Dependent Claim
44 words
AN ABRASIVE BODY CONSISTING ESSENTAILLY OF ABRASIVE GRAIN AND A THERMOSETTING RESINOID BOND THEREFOR, SAID GRAIN CONSISTING ESSENTAILLY OF A MIXTURE OF ABOUT 85% TO ABOUT 15% BY VOLUME FUSED ALUMINA GRAIN AND ABOUT 15% TO ABOUT 85% BY VOLUME OF FUSED ZIRCONIA GRAIN.
References Cited (Backward Citations)
US1240490A
Cited
US2769699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |