US3658569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective nickel deposition
Assignee: National Aeronautics and Space Administration
•
Filing: 1969-11-13
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Granted: 1972-04-25
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Expires: 1989-11-13
Abstract
Abstract A process for selectively depositing nickel by irradiating selected portions of a substrate coated with an irradiation sensitive compound. Immersing the irradiated substrate in a developer deposits controlled amounts of nickel in the selected portions.
Inventors
- 👤 Warren H Philipp
- 👤 Stanley J Marsik
- 👤 Charles E May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/725; G03C5/00; G03C5/58; H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H05K3/106; Y; Y10; Y10S; Y10S430/00; Y10S430/167
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
12 words
A method as claimed in claim 1 wherein the substrate is ceramic.
Claim 2
Dependent Claim
13 words
A method as claimed in claim 1 wherein the substrate is porous paper.
Claim 3
Dependent Claim
12 words
A method as claimed in claim 1 wherein the substrate is glass.
Claim 4
Dependent Claim
12 words
A method as claimed in claim 1 wherein the irradiation is X-rays.
Claim 5
Dependent Claim
13 words
A method as claimed in claim 1 wherein the irradiation is ionizing particles.
Claim 6
Dependent Claim
21 words
A method as claimed in claim 1 wherein the nickel hypophosphite solution is an ammoniacal nickel-salt solution containing a hypophosphite ion.
Claim 7
Dependent Claim
18 words
A method as claimed in claim 1 wherein the developing solution is a solution of dilute aqueous ammonia.
Claim 8
Dependent Claim
25 words
A method as claimed in claim 1 including the step of masking predetermined portions of the substrate with a material that is opaque to radiation.
References Cited (Backward Citations)
US1207218A
Cited
US2690403A
Cited
US3152933A
Cited
US3336159A
Cited
US3492151A
Cited
US3529961A
Cited
US3513015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |