Patent US4008055A successfully refreshed from Google Patents.
US4008055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive wheel containing nickel coated needle-shaped cubic boron nitride particles
Assignee: Individual
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Filing: 1975-02-28
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Granted: 1977-02-15
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Expires: 1995-02-28
Abstract
Abstract This invention provides an abrasive product, which can be for use in or form part of an abrasive tool, comprising a bonding matrix, preferably resin, containing needle-shaped cubic boron nitride particles so aligned that their long axes are substantially normal to the working face of the product.
Inventors
- 👤 Cornelius Phaal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:38
CPC Classifications
B; B24; B24D; B24D99/00; B24D11/00; B24D18/00; B24D7/00; C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1436; C09K3/1445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A grinding wheel comprising a hub portion and a peripheral grinding portion, the peripheral grinding portion comprising a resin matrix selected from phenolformaldehyde and polyimide resins containing nickel coated needle-shaped cubic boron nitride particles, each particle having a long axis and a transverse short axis, the nickel coating comprising from 30 to 80 weight percent of the coated particle and a substantial portion of the particles being so aligned that their long axes are substantially normal to the working face of the grinding portion.
Claim 2
Dependent Claim
84 words
A grinding wheel comprising a hub portion and a peripheral grinding portion, the peripheral grinding portion comprising a resin matrix selected from phenolformaldehyde and polyimide resins containing nickel coated needle-shaped cubic boron nitride particles, each particle having a long axis and a transverse short axis, the nickel coating comprising from 30 to 80 weight percent of the coated particle and a substantial portion of the particles being so aligned that their long axes are substantially normal to the working face of the grinding portion.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |