US3255033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless plating of a substrate with nickel-iron alloys and the coated substrate
Assignee: International Business Machines Corp
•
Filing: 1961-12-28
•
Granted: 1966-06-07
•
Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Schmeckenbecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:31
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; H01F41/26; C; C23; C23C; C23C18/00; C23C18/16; C23C18/48; C23C18/50; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF PLATING AN ACTIVATED SUBSTRATE COMPRISING THE STEPS OF PREPARING AN AQUEOUS ELECTROLESS PLATING BATH CONSISTING ESSENTIALLY OF PER LITER OF WATER; 30 GRAMS OF NICL2.6H2O AND AN AMOUNT OF FECL2.4H2O WHICH CORRESPONDS TO A RATIO OF NI++ TO FE++ OF 1.50 50 GRAMS OF SODIUM POTASSIUM TARTRATE 25 GRAMS OF SODIUM HYPOPHOSPHITE, AND AMMONIA TO BRING THE PH TO 11, HEATING SAID BATH TO 75*-90*C., AND INSERTING SAID ACTIVATED SUBSTRATE INTO SAID BATH FOR FROM THREE TO THIRTY MINUTES, WHEREBY A MAGNETIC MEMORY ELEMENT IS FORMED BY CHEMICAL DEPOSITION.
Claim 2
Independent Claim
92 words
A METHOD OF PLATING AN ACTIVATED SUBSTRATE COMPRISING THE STEPS OF PREPARING AN AQUEOUS ELECTROLESS PLATING BATH CONSISTING ESSENTIALLY OF PER LITER OF WATER; 30 GRAMS OF NICL2.6H2O AND AN AMOUNT OF FECL2.4H2O WHICH CORRESPONDS TO A RATIO OF NI++ TO FE++ OF 1.50 50 GRAMS OF SODIUM POTASSIUM TARTRATE 25 GRAMS OF SODIUM HYPOPHOSPHITE, AND AMMONIA TO BRING THE PH TO 11, HEATING SAID BATH TO 75*-90*C., AND INSERTING SAID ACTIVATED SUBSTRATE INTO SAID BATH FOR FROM THREE TO THIRTY MINUTES, WHEREBY A MAGNETIC MEMORY ELEMENT IS FORMED BY CHEMICAL DEPOSITION.
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |