US3856565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrolessly plating a metal to a body which includes lead
Assignee: RCA Corp
•
Filing: 1973-04-03
•
Granted: 1974-12-24
•
Expires: 1993-04-03
Abstract
Abstract The method includes the step of treating the surface of the body to be plated with an activating solution containing, in addition to the activating substance, a substance that reacts with lead ions to produce an insoluble lead compound.
Inventors
- 👤 A Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
IN A METHOD OF DEPOSITING A METAL ELECTROLESSLY FROM A PLATING BATH ON A SURFACE OF A BODY A PORTION OF WHICH SURFACE CONTAINS A LEAD COMPOUND, THE STEP OF ACTIVATING SAID SURFACE WITH A SOLUTION SEPARATE FROM THE PLATING BATH, THAT INCLUDES, IN ADDITION TO THE ACTIVATING SUBSTANCE, A SUBSTANCE THAT REACTS WITH LEAD IONS TO FORM AN INSOLUBLE LEAD COMPOUND SUCH THAT THE LEAD IS CONVERTED TO A CONDITION IN WHICH IT CANNOT POISON SAID ACTIVATINGS SUBSTANCE.
Claim 2
Dependent Claim
79 words
IN A METHOD OF DEPOSITING A METAL ELECTROLESSLY FROM A PLATING BATH ON A SURFACE OF A BODY A PORTION OF WHICH SURFACE CONTAINS A LEAD COMPOUND, THE STEP OF ACTIVATING SAID SURFACE WITH A SOLUTION SEPARATE FROM THE PLATING BATH, THAT INCLUDES, IN ADDITION TO THE ACTIVATING SUBSTANCE, A SUBSTANCE THAT REACTS WITH LEAD IONS TO FORM AN INSOLUBLE LEAD COMPOUND SUCH THAT THE LEAD IS CONVERTED TO A CONDITION IN WHICH IT CANNOT POISON SAID ACTIVATINGS SUBSTANCE.
Claim 3
Dependent Claim
25 words
A method according to claim 1 in which said body is made of silicon which is partially coated with a glass containing said lead compound.
Claim 4
Dependent Claim
13 words
A method according to claim 2 in which said activating substance is palladium.
Claim 5
Dependent Claim
18 words
A method according to claim 3 in which said substance that reacts with lead ions is a phosphate.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |