US3212917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless plating procedure
Assignee: International Business Machines Corp
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Filing: 1962-01-03
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Granted: 1965-10-19
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Expires: 1982-01-03
Abstract
No abstract record available.
Inventors
- 👤 Tsu Ignatius
- 👤 Robert S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/48; C23C18/50; C23C18/31; C23C18/32; C23C18/34; C23C18/36; H; H05; H05K; H05K3/00; H05K3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN ELECTROLESSLY PLATING PROCESS, WHEREIN A NONMETALLIC SUBSTRATE HAVING A SURFACE OF SUCH SMOOTHNESS THAT ELECTROLESSLY PLATED THICKNESS OF OVER ABOUT 600 A. FAIL TO ADHERE THERETO, COMPRISING THE SEQUENTIAL STEPS OF: BAKING SAID SUBSTRATE AT A TEMPERATURE ABOVE ABOUT 38*C. FOR A TIME SUFFICIENT TO REMOVE SUBSTANTIALLY ALL OF THE MOISTURE FROM THE SUBSTRATE; SENSITIZING SAID SMOOTH SUBSTRATE SURFACE WITH SUCCESSIVE ACIDIC AQUEOUS SOLUTIONS OF STANNOUS CHLORIDE AND PALLADIUM CHLORIDE; ELECTROLESSLY PLATING AN ELECTROLESSLY PLATABLE METAL ON SAID SENSITIZED SUBSTRATE SURFACE TO AN INITIAL PLATE THICKNESS OF ABOUT 600 A.; BAKING SAID PLATED SUBSTRATE AT A TEMPERATURE ABOVE ABOUT 38*C. FOR A TIME SUFFICIENT TO REMOVE SUBSTANTIALLY ALL OF THE MOISTURE FROM THE PLATED LAYER OF THE SUBSTRATE; AND ELECTROLESSLY PLATING AND ELECTROLESSLY PLATABLE METAL ON SAID BAKED PLATED LAYER TO AN ADDITIONAL PLATE THICKNESS UP TO ABOUT 200 A. SO AS TO PROVIDE A TOTAL PLATE THICKNESS OF GREATER THAN SAID INITIAL PLATE THICKNESS AND OVER ABOUT 600 A.
Claim 2
Dependent Claim
161 words
AN ELECTROLESSLY PLATING PROCESS, WHEREIN A NONMETALLIC SUBSTRATE HAVING A SURFACE OF SUCH SMOOTHNESS THAT ELECTROLESSLY PLATED THICKNESS OF OVER ABOUT 600 A. FAIL TO ADHERE THERETO, COMPRISING THE SEQUENTIAL STEPS OF: BAKING SAID SUBSTRATE AT A TEMPERATURE ABOVE ABOUT 38*C. FOR A TIME SUFFICIENT TO REMOVE SUBSTANTIALLY ALL OF THE MOISTURE FROM THE SUBSTRATE; SENSITIZING SAID SMOOTH SUBSTRATE SURFACE WITH SUCCESSIVE ACIDIC AQUEOUS SOLUTIONS OF STANNOUS CHLORIDE AND PALLADIUM CHLORIDE; ELECTROLESSLY PLATING AN ELECTROLESSLY PLATABLE METAL ON SAID SENSITIZED SUBSTRATE SURFACE TO AN INITIAL PLATE THICKNESS OF ABOUT 600 A.; BAKING SAID PLATED SUBSTRATE AT A TEMPERATURE ABOVE ABOUT 38*C. FOR A TIME SUFFICIENT TO REMOVE SUBSTANTIALLY ALL OF THE MOISTURE FROM THE PLATED LAYER OF THE SUBSTRATE; AND ELECTROLESSLY PLATING AND ELECTROLESSLY PLATABLE METAL ON SAID BAKED PLATED LAYER TO AN ADDITIONAL PLATE THICKNESS UP TO ABOUT 200 A. SO AS TO PROVIDE A TOTAL PLATE THICKNESS OF GREATER THAN SAID INITIAL PLATE THICKNESS AND OVER ABOUT 600 A.
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |