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Patent US4364731A successfully refreshed from Google Patents.
US4364731A
Expired / Lapsed
US
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Methods for producing adhesive bonds between substrate and polymer employing an intermediate oxide layer
Assignee: The University of Texas System
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Filing: 1981-01-29
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Granted: 1982-12-21
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Expires: 2001-01-29
Abstract
Abstract Methods and compositions are provided for enhancing the bonding of polymeric materials to substrates via silane coupling agents. The methods involve depositing an oxide layer, such as alumina or silica, to a substrate, for example stainless steel. Next a silane coupling agent is applied which forms a strong chemical bond with the oxide layer. This layer is then coated or contacted with a polymeric substance. The resulting composite provides a strong adhesive bonding of substrate to polymer.
Inventors
- 👤 Barry K. Norling
- 👤 James L. Bugg, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:07
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C5/00; A61C5/70; A61C5/77; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31678
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
76 words
A method for producing a dental crown composite comprising the steps of: (a) providing a clean dental crown substrate surface; (b) depositing onto the substrate surface an exogenous coating of inorganic oxide to a desired thickness on the substrate surface to enhance adhesion between the substrate and subsequently applied silane coupling agent; (c) bonding a layer of silane coupling agent to the oxide coating; and (d) applying a polymeric resin to the exposed silane coupling layer.
Claim 2
Independent Claim
76 words
A method for producing a dental crown composite comprising the steps of: (a) providing a clean dental crown substrate surface; (b) depositing onto the substrate surface an exogenous coating of inorganic oxide to a desired thickness on the substrate surface to enhance adhesion between the substrate and subsequently applied silane coupling agent; (c) bonding a layer of silane coupling agent to the oxide coating; and (d) applying a polymeric resin to the exposed silane coupling layer.
Claim 3
Dependent Claim
28 words
The method according to claim 1 wherein the exogenous inorganic metal oxide coating is selected from the group consisting of alumina, silica, aluminates, silicates, alumino-silicates, and silica-rich glasses.
Claim 4
Dependent Claim
17 words
The method according to claim 1 wherein the exogenous inorganic metal oxide coating is alumina or silica.
Claim 5
Dependent Claim
23 words
The method according to claim 1 wherein the dental crown substrate is selected from the group consisting of metallic, ceramic, and polymeric materials.
Claim 6
Dependent Claim
13 words
The method according to claim 1 wherein the substrate is a metallic material.
Claim 7
Dependent Claim
12 words
The method according to claim 1 wherein the substrate is stainless steel.
Claim 8
Dependent Claim
15 words
The method according to claim 1 wherein the oxide coating is deposited by sputter deposition.
Claim 9
Dependent Claim
53 words
A dental crown composite comprising a dental crown substrate; a layer of exogenous inorganic oxide applied to a desired thickness to the surface of the substrate a layer of silane coupling agent bonded to the layer of oxide; and a coating of polymeric resin applied to the surface of the silane coupling layer.
Claim 10
Dependent Claim
53 words
A dental crown composite comprising a dental crown substrate; a layer of exogenous inorganic oxide applied to a desired thickness to the surface of the substrate a layer of silane coupling agent bonded to the layer of oxide; and a coating of polymeric resin applied to the surface of the silane coupling layer.
Claim 11
Dependent Claim
27 words
The dental crown composite according to claim 8 wherein the exogenous oxide is selected from the group consisting of alumina, silica, aluminate, silicates, alumino-silicates and silica-rich glasses.
Claim 12
Dependent Claim
16 words
The dental crown composite according to claim 8 wherein the exogenous oxide is alumina or silica.
Claim 13
Dependent Claim
25 words
The dental crown composite according to claim 8 wherein the dental crown substrate is selected from the group consisting of metallic, ceramic and polymeric materials.
Claim 14
Dependent Claim
14 words
The dental crown composite of claim 8 wherein the substrate is a metallic material.
Claim 15
Dependent Claim
13 words
The dental crown composite of claim 8 wherein the substrate is stainless steel.
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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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |