US3212918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless plating process
Assignee: International Business Machines Corp
•
Filing: 1962-05-28
•
Granted: 1965-10-19
•
Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Tsu Ignatius
- 👤 Ronald G Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:24
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/48; C23C18/50; C23C18/18; C23C18/20; C23C18/2006; C23C18/2026; C23C18/2033; C23C18/28; C23C18/285; C23C18/30; C23C18/31; C23C18/32; C23C18/34; C23C18/36; H; H05; H05K; H05K3/00; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD OF ELECTROLESSLY DEPOSITING A CONDUCTIVE FILM UPON A NON-CONDUCTIVE SUBSTRATE WHICH COMPRISES THE STEPS OF: (A) CLEANING AND RINSING SAID SUBSTRATE; (B) HEATING SAID SUBSTRATE AT FROM 100* TO 450*C. FOR FROM 1 TO 20 MINUTES SO AS TO IMPROVE SENSITIZING ACTION AND THEREBY INCREASE THE DEPOSITION RATE; (C) SENSITIZING THE SUBSTRATE BY FIRST IMMERSING IN A STANNOUS CHLORIDE BATH, THEN RINSING, NEXT IMMERSING IN A PALLADIUM CHLORIDE BATH, FOLLOWED BY RINSING; (D) ELECTROLESSLY DEPOSITING SAID CONDUCTIVE FILM ON THE THUS SENSITIZED SUBSTRATE BY IMMERSING IN AN ELECTROLESS PLATING BATH SELECTED FROM THE GROUP CONSISTING OF NI, CO, NI-CO AND CU ELECTROLESS PLATING BATHS, THEN RINSING; (E) HEATING THE THUS PLATED SUBSTRATE AT FROM 100* TO 450*C. FOR FROM 1 TO 60 MINUTES SO AS TO REMOVE ALL
Claim 2
Independent Claim
130 words
A METHOD OF ELECTROLESSLY DEPOSITING A CONDUCTIVE FILM UPON A NON-CONDUCTIVE SUBSTRATE WHICH COMPRISES THE STEPS OF: (A) CLEANING AND RINSING SAID SUBSTRATE; (B) HEATING SAID SUBSTRATE AT FROM 100* TO 450*C. FOR FROM 1 TO 20 MINUTES SO AS TO IMPROVE SENSITIZING ACTION AND THEREBY INCREASE THE DEPOSITION RATE; (C) SENSITIZING THE SUBSTRATE BY FIRST IMMERSING IN A STANNOUS CHLORIDE BATH, THEN RINSING, NEXT IMMERSING IN A PALLADIUM CHLORIDE BATH, FOLLOWED BY RINSING; (D) ELECTROLESSLY DEPOSITING SAID CONDUCTIVE FILM ON THE THUS SENSITIZED SUBSTRATE BY IMMERSING IN AN ELECTROLESS PLATING BATH SELECTED FROM THE GROUP CONSISTING OF NI, CO, NI-CO AND CU ELECTROLESS PLATING BATHS, THEN RINSING; (E) HEATING THE THUS PLATED SUBSTRATE AT FROM 100* TO 450*C. FOR FROM 1 TO 60 MINUTES SO AS TO REMOVE ALL
References Cited (Backward Citations)
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 |