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Patent US4082899A successfully refreshed from Google Patents.
US4082899A
Expired / Lapsed
US
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Method of applying catalysts for electroless deposition and article
Assignee: Individual
•
Filing: 1976-09-07
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Granted: 1978-04-04
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Expires: 1996-09-07
Abstract
Abstract Catalytic compositions useful in the preparation of substrates prior to chemical deposition (autocatalytic plating) comprises an excess hydrolyzable stannic ion relative to stannous ions together with catalytic metal(s) and selected chemical additives. By simple adjustments, a plurality of substrates may be treated.
Inventors
- 👤 Nathan Feldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:10
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
53 words
A method for preparing a substrate prior to electroless (chemical) metal deposition comprising the step of treating said substrate with a catalytic composition comprising a sensitizer and a catalytic metal and wherein said sensitizer comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) is in excess relative to tin(II).
Claim 2
Independent Claim
53 words
A method for preparing a substrate prior to electroless (chemical) metal deposition comprising the step of treating said substrate with a catalytic composition comprising a sensitizer and a catalytic metal and wherein said sensitizer comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) is in excess relative to tin(II).
Claim 3
Dependent Claim
57 words
The method recited in claim 1 wherein said catalytic composition is applied to said substrate by sequentially treating said substrate with a sensitizer composition and then with a composition containing a catalytic metal and wherein said sensitizer composition comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) is in excess relative to tin(II).
Claim 4
Dependent Claim
44 words
The method recited in claim 1 wherein said catalytic composition is a composition comprising both the sensitizer and catalytic metal and wherein said sensitizer composition comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) Is in excess relative to tin(II).
Claim 5
Dependent Claim
15 words
The method according to claim 3 wherein the sensitizer composition further includes a oxidation stabilizer.
Claim 6
Dependent Claim
23 words
The method recited in claim 1 wherein said sensitizer further contains a modifier selected from the group consisting of soluble chlorides and bromides.
Claim 7
Dependent Claim
15 words
The method recited in claim 1 wherein said catalytic composition further includes a oxidation stabilizer.
Claim 8
Dependent Claim
36 words
The method according to claim 1 wherein said sensitizer comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) is in a relative ratio to tin(II) of at least about 1.5 to 1.0.
Claim 9
Dependent Claim
60 words
A metal plated non-conductor substrate formed by the steps comprising (a) treating said substrate with a catalytic composition comprising a sensitizer and a catalytic metal wherein said sensitizer comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) is in excess relative to tin(II), and (b) treating above treated substrate with a suitable electroless (chemical) plating composition.
Claim 10
Dependent Claim
60 words
A metal plated non-conductor substrate formed by the steps comprising (a) treating said substrate with a catalytic composition comprising a sensitizer and a catalytic metal wherein said sensitizer comprises aged tin(IV) and tin(II) and wherein said tin(IV) in said aged tin(IV) is in excess relative to tin(II), and (b) treating above treated substrate with a suitable electroless (chemical) plating composition.
Claim 11
Dependent Claim
16 words
The metal plated substrate recited in claim 8 wherein said plating composition is an electroless nickel.
Claim 12
Dependent Claim
27 words
The metal plated substrate recited in claim 8 wherein said sensitizer comprises aged tin(IV) and tin(II) in a relative ratio of at least about 1.5 to 1.0.
Claim 13
Dependent Claim
16 words
The metal plated substrate recited in claim 8 wherein the sensitizer further includes a oxidation stabilizer.
References Cited (Backward Citations)
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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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |