US3156545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive articles
Assignee: Wakefield Corp
•
Filing: 1962-05-14
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Granted: 1964-11-10
•
Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Kistler
- 👤 Charles V Rue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:55
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A SOLID ABRASIVE ARTICLE COMPRISING ABRASIVE GRAINS HAVING A GRIT SIZE IN THE RANGE OF NO.8 TO NO.250 BONDED WITH AT LEAST ONE THERMOSETTING RESIN, SAID ABRASIVE GRAINS CONSISTING ESSENTIALLY OF ABOUT 15% TO ABOUT 60% BY VOLUME OF GLASS, ABOUT 7% TO ABOUT 85% BY VOLUME OF ZIRCONIA PARTICLES AND ABOUT 78% TO 0% BY VOLUME OF ALUMINA PARTICLE, SAID ZIRCONIA AND ALUMINA PARTICLES BEING EMBEDDED IN AND DISTRIBUTED THROUGHOUT SAID GLASS.
Claim 2
Dependent Claim
73 words
A SOLID ABRASIVE ARTICLE COMPRISING ABRASIVE GRAINS HAVING A GRIT SIZE IN THE RANGE OF NO.8 TO NO.250 BONDED WITH AT LEAST ONE THERMOSETTING RESIN, SAID ABRASIVE GRAINS CONSISTING ESSENTIALLY OF ABOUT 15% TO ABOUT 60% BY VOLUME OF GLASS, ABOUT 7% TO ABOUT 85% BY VOLUME OF ZIRCONIA PARTICLES AND ABOUT 78% TO 0% BY VOLUME OF ALUMINA PARTICLE, SAID ZIRCONIA AND ALUMINA PARTICLES BEING EMBEDDED IN AND DISTRIBUTED THROUGHOUT SAID GLASS.
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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |