US2949351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant abrasive wheels
Assignee: Individual
•
Filing: 1958-01-02
•
Granted: 1960-08-16
•
Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis E Vigliatura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:00
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A SOLFUR-FREE ABRASIVE WHEEL WHICH CONSISTS OF AORASIVE GRANULES AND A BOND, SAID BOND COMPRISING ESSENTIALLY A HEAT-HARDENABLE RESIN , AND A FILLER MIXTURE ABOUT 20% TO 38% BY VOLUME OF CRYOLITE, ABOUT 5% TO 15% BY VOLUME OF AMMONIUM CHLORIDE, AND ABOUT 2% TO 15% BY VOLUME OF CHILLED IRON GRIT, THE TOTAL VOLUME OF SAID FILLER MIXTURE BEING ABOUT 40% TO 45%.
References Cited (Backward Citations)
US2162600A
Cited
US2333429A
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US2534806A
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US2860960A
Cited
US2860961A
Cited
US2811430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |