US3267009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of platinum containing minor amounts of bismuth
Assignee: Engelhard Industries Inc
•
Filing: 1962-10-08
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Granted: 1966-08-16
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Greenspan Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:35
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; C25D3/56; C25D3/567
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A METHOD FOR ELECTROLYTE DEPOSITION OF ADHERENT DEPOSITS OF PLATINUM CONTAINING MINOR EFFECTIVE AMOUNTS OF BISMUTH WHICH COMPRISES IMMERSING A METAL TO BE PLATED, AS THE CATHODE OF AN ELECTRICAL CIRCUIT INTO AN ELECTROLYTE CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF CHLOROPLATINIC ACID, A SOLUBLE BISMUTH COMPOUND AND HYDROCHLORIC ACID, THE BISMUTH BEING PRESENT IN AN AMOUNT FROM ABOUT 0.2 TO ABOUT 2.5% BY WEIGHT BASED ON PLATINUM IN SAID SOLUTION, AND PASSING CURRENT THROUGH THE CIRCUIT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |