US3779873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for metal coating diamonds
Assignee: De Beers Industrial Diamond Division Pty Ltd
•
Filing: 1972-05-22
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Granted: 1973-12-18
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Expires: 1992-05-22
Abstract
Abstract A method of metal coating, particularly electrolytically, particulate material such as diamond, cubic boron nitride or the like which includes the steps of forming a bed of the material, fluidising the bed by passing a metal coating solution through it, and causing the metal to deposit on to the material.
Inventors
- 👤 B Dewar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
C; C25; C25D; C25D7/00; C25D5/00; C25D5/08; C25D5/60; C25D5/605
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
16 words
A process as claimed in claim 1, in which said rate is 2.5 pulses per second.
References Cited (Backward Citations)
US521991A
Cited
US1789443A
Cited
FR1537301A
Cited
US3498890A
Cited
US3654098A
Cited
US3577324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |