US3585013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyimide grinding wheels containing diamonds having a barbed metal coating
Assignee: Unicorn Industries Ltd
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Filing: 1969-03-26
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Granted: 1971-06-15
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Expires: 1989-03-26
Abstract
Abstract GRINDING WHEELS BONDED WITH AN AROMATIC POLYIMIDE WHEREIN THE ABRASIVE IS FORMED FROM SYNTHETIC DIAMONDS HAVING A METAL COATING HAVING BARBS FROM 0.3 TO 15 MICRONS IN HEIGHT AND WIDTH OF METAL PROJECTING FROM THE SURFACE.
Inventors
- 👤 Dieter Klaus Bruschek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:16
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436; C09K3/1445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |