Patent US2066703A successfully refreshed from Google Patents.
Patent US3595634A successfully refreshed from Google Patents.
US3595634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticorrosive grindstone
Assignee: Individual
•
Filing: 1969-09-11
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Granted: 1971-07-27
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Expires: 1989-09-11
Abstract
Abstract A METHOD FOR PRODUCING A GRINDSTONE CHARACTERIZED BY MOLDING AN EPOXY RESIN BINDER WITH A HARDENING AGENT, ACTIVE SULPHUR AND SODIUM NITRITE. THE NOVEL GRINDSTONE IS USED TO PREVENT RUST AND UNEVEN FINISHING OF A TREATED METAL SURFACE. THE GRINDSTONE REPLENISHES THE LOSS DUE TO HYDROLYSIS OF THE GRINDING SOLUTION, THEREBY ENABLING THE GRINDING SOLUTION TO MAINTAIN ITS LUBRICATING AND ANTICORROSIVE PROPERTIES.
Inventors
- 👤 Kozo Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:02
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344; C; C08; C08K; C08K3/00
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |