Patent US4512863A successfully refreshed from Google Patents.
US4512863A
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Stainless steel primer for sputtered films
Assignee: PPG Industries Ohio Inc
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Filing: 1983-09-09
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Granted: 1985-04-23
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Expires: 2003-09-09
Abstract
Abstract A method is disclosed for improving the adhesion of sputtered metal films such as silver and copper by means of first depositing a primer layer of a metal such as stainless steel.
Inventors
- 👤 Russell C. Criss
- 👤 F. Howard Gillery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:09
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3607; C03C17/3613; C03C17/3642; C03C17/3652; C03C17/3657; C03C17/366; C03C17/3689; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/16; C23C14/18; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12597
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
A method for coating a nonmetallic substrate with a film by cathode sputtering, wherein the film comprises a metal characterized by low adhesion to the substrate surface, comprising the steps of: a. first depositing onto the substrate surface a primer layer of a metal which bonds oxidatively to the nonmetallic substrate surface; and b. subsequently sputtering the low adhesion metal film onto the primer layer.
Claim 2
Independent Claim
65 words
A method for coating a nonmetallic substrate with a film by cathode sputtering, wherein the film comprises a metal characterized by low adhesion to the substrate surface, comprising the steps of: a. first depositing onto the substrate surface a primer layer of a metal which bonds oxidatively to the nonmetallic substrate surface; and b. subsequently sputtering the low adhesion metal film onto the primer layer.
Claim 3
Dependent Claim
12 words
The improved method according to claim 1, wherein the substrate is glass.
Claim 4
Dependent Claim
29 words
The improved method according to claim 2, wherein the primer metal is selected from the group consisting of stainless steel, titanium, chromium, vanadium, aluminum, tin, tantalum and nickel alloys.
Claim 5
Dependent Claim
27 words
The improved method according to claim 3, wherein the low adhesion metal is selected from the group consisting of gold, silver, copper, platinum, palladium, and mixtures thereof.
Claim 6
Dependent Claim
36 words
The improved method according to claim 4, wherein the primer metal is selected from the group consisting of stainless steel and titanium, and the sputtered metal is selected from the group consisting of silver and copper.
Claim 7
Dependent Claim
19 words
The improved method according to claim 5, wherein primer and film layers are deposited by magnetically enhanced cathode sputtering.
Claim 8
Dependent Claim
29 words
The improved method according to claim 1, wherein the substrate is transparent and the primer layer is of a thickness which reduces the transmittance by at least one percent.
Claim 9
Dependent Claim
28 words
The improved method according to claim 7, wherein the substrate is glass and the primer layer is stainless steel at a thickness of at least about 3 Angstroms.
Claim 10
Dependent Claim
22 words
The improved method according to claim 8, wherein the stainless steel primer layer has a thickness of about 20 to 25 Angstroms.
Claim 11
Dependent Claim
49 words
In a method for coating glass with a two-layer film of silver and copper by cathode sputtering, the improvement which comprises first depositing a primer layer of a metal which bonds oxidatively to the glass surface and subsequently cathode sputtering the silver and copper layers over the primer layer.
Claim 12
Dependent Claim
49 words
In a method for coating glass with a two-layer film of silver and copper by cathode sputtering, the improvement which comprises first depositing a primer layer of a metal which bonds oxidatively to the glass surface and subsequently cathode sputtering the silver and copper layers over the primer layer.
Claim 13
Dependent Claim
29 words
The improved method according to claim 10, wherein the primer metal is selected from the group consisting of stainless steel, titanium, chromium, vanadium, aluminum, tin, tantalum and nickel alloys.
Claim 14
Dependent Claim
14 words
The improved method according to claim 11, wherein the primer layer is stainless steel.
Claim 15
Dependent Claim
22 words
The improved method according to claim 12, wherein the thickness of the stainless steel primer layer is about 20 to 25 Angstroms.
Claim 16
Dependent Claim
27 words
The improved method according to claim 13, wherein the stainless steel primer and the silver and copper layers of the film are all deposited by magnetron sputtering.
References Cited (Backward Citations)
US3457138A
Cited
US3386906A
Cited
US3393446A
Cited
US3437888A
Cited
US4094763A
Cited
US3922385A
Cited
US4166018A
Cited
US4017661A
Cited
US3986944A
Cited
US4370217A
Cited
US4407713A
Cited
US4336119A
Cited
US4379040A
Cited
US4399015A
Cited
US4404235A
Cited
US4342632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |