US3033703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless plating of copper
Assignee: Kollmorgen Corp
•
Filing: 1958-12-08
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Granted: 1962-05-08
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Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick W Schneble
- 👤 Mccormack John
- 👤 Rudolph J Zeblisky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40; C23C18/405
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
A BATH FOR THE ELECTROLESS PLATING OF COPPER WHICH CONSISTS ESSENTIALLY OF FROM 0.02 TO 0.25 MOL OF A WATER SOLUBLE COPPER SALT, FROM 0,25 MOL TO 2.1 MOLS OF FORMALDEHYDE, FROM 0.002 TO 0.25 MOL AND IN AN AMOUNT LESS THAN THAT NECESSARY TO COMPLETELY COMPLEX SAID COPPER SALT OF A COPPER COMPLEXING SALT SELECTED FROM THE GROUP CONSISTING OF ROCHELLE SALTS, SODIUM GLUTNOTE, AND SODIUM CITRATE, ALKALI METAL HYDROXIDE FROM 5 TO 7 TIMES THE NUMBER OF MOLS OF THE COPPER COMPLEXING SALT AND SUFFICIENT TO GIVE THE BATH A PH OF AT LEAST 11.0 AND WATER SUFFICIENT TO GIVE ONE LITER OF BATH SOLUTION.
Claim 2
Dependent Claim
107 words
A BATH FOR THE ELECTROLESS PLATING OF COPPER WHICH CONSISTS ESSENTIALLY OF FROM 0.02 TO 0.25 MOL OF A WATER SOLUBLE COPPER SALT, FROM 0,25 MOL TO 2.1 MOLS OF FORMALDEHYDE, FROM 0.002 TO 0.25 MOL AND IN AN AMOUNT LESS THAN THAT NECESSARY TO COMPLETELY COMPLEX SAID COPPER SALT OF A COPPER COMPLEXING SALT SELECTED FROM THE GROUP CONSISTING OF ROCHELLE SALTS, SODIUM GLUTNOTE, AND SODIUM CITRATE, ALKALI METAL HYDROXIDE FROM 5 TO 7 TIMES THE NUMBER OF MOLS OF THE COPPER COMPLEXING SALT AND SUFFICIENT TO GIVE THE BATH A PH OF AT LEAST 11.0 AND WATER SUFFICIENT TO GIVE ONE LITER OF BATH SOLUTION.
Claim 3
Dependent Claim
63 words
THE PROCESS OF ELECTROLESS PLATING COPPER, THE STEPS OF SENSITIZING THE SURFACE TO BE PLATED WITH A SOLUTION CONTAINING STANNOUS IONS, WASHING SAID SURFACE, SEEDING THE SENSITIZED SURFACE WITH A SOLUTION CONTAINING IONS SELECTED FROM THE GROUP CONSISTING OF PALLADIUM AND GOLD WASHING SAID SURFACE PRELIMINARY TO CONTACTING THE SURFACE THUS PREPARED WITH AND ELECTROLESS COPPER PLATING BATH AS CLAIMED IN CLAIM 1.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |