US2877105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitrified bonded grinding wheel with fine hard sides
Assignee: Saint Gobain Abrasives Inc
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Filing: 1957-06-27
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Granted: 1959-03-10
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Ian B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:03
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A VITRIFIED GRINGING WHEEL WITH FINE HARD SIDES ESSENTIALLY CONSISTING OF ABRASIVE GRAINS BONDED WITH VITRIFIED CERAMIC BOND, AND A FINE HARD SIDE ON SAID GRINDING WHEEL CONSISTING OF A COATING OF FUSED ABRASIVE MATERIAL THE MAJOR PORTION BY WEIGHT OF WHICH IS FUSED CRYSTALLINE METAL OXIDE HAVING A SHARP MELTING POINT, THE REMAINDER OF SAID COATING BEING SELECTED FROM SAID FUSED CRYSTALLINE METAL OXIDE AND VITRIFIED SILICATE BOND AND SAID METAL
Claim 2
Dependent Claim
72 words
A VITRIFIED GRINGING WHEEL WITH FINE HARD SIDES ESSENTIALLY CONSISTING OF ABRASIVE GRAINS BONDED WITH VITRIFIED CERAMIC BOND, AND A FINE HARD SIDE ON SAID GRINDING WHEEL CONSISTING OF A COATING OF FUSED ABRASIVE MATERIAL THE MAJOR PORTION BY WEIGHT OF WHICH IS FUSED CRYSTALLINE METAL OXIDE HAVING A SHARP MELTING POINT, THE REMAINDER OF SAID COATING BEING SELECTED FROM SAID FUSED CRYSTALLINE METAL OXIDE AND VITRIFIED SILICATE BOND AND SAID METAL
References Cited (Backward Citations)
US2102343A
Cited
US2479078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |