Patent US4781695A successfully refreshed from Google Patents.
Patent US3664860A successfully refreshed from Google Patents.
US3664860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolessly nickel plating on a non-metallic basis material
Assignee: Nihon Kagaku Kizai KK
•
Filing: 1969-12-08
•
Granted: 1972-05-23
•
Expires: 1989-12-08
Abstract
Abstract A process for depositing nickel on a non-metallic basis material from a chemical nickel plating bath containing a hypophosphite as a reducing agent to form a nickel coating on the basis material, the coating being indispensable for the practice of the subsequent electroplating, characterized in that the bath contains, as a second reducing agent, a member selected from the group consisting of 1-ascorbic acid, its salts, and any substances which will produce 1-ascorbic acid when incorporated in the bath as one of the components thereof, thereby to eliminate the sensitizing pre-treatment required for the conventional processes for chemically plating a non-metallic basis material with nickel.
Inventors
- 👤 Nobuyuki Kamiya
- 👤 Kiyotaka Funada
- 👤 Takashi Shinohara
- 👤 Hiroko Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:01
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
26 words
A process as claimed in claim 1, wherein the bath contains the second reducing agent in an amount of 3- 30 g/l, calculated as l-ascorbic acid.
Claim 2
Dependent Claim
16 words
A process as claimed in claim 2, wherein the bath is at pH of 3- 6.
Claim 3
Dependent Claim
22 words
A process as claimed in claim 3, wherein the bath is operated at a temperature of room temperature to about 60* C.
Claim 4
Dependent Claim
16 words
A process as claimed in claim 1, wherein the non-metallic basis material is a synthetic resin.
Claim 5
Dependent Claim
21 words
A process as claimed in claim 5, wherein the synthetic resin is selected from the group consisting of acrylonitrile-butadiene-styrene and polypropylene.
References Cited (Backward Citations)
US3423226A
Cited
US3437507A
Cited
US3438798A
Cited
US3370974A
Cited
US3515649A
Cited
US3507681A
Cited
US3597267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |