US5597614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrafine particle dispersed glassy material and method
Assignee: Mitsuboshi Belting Ltd
•
Filing: 1995-06-07
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Granted: 1997-01-28
•
Expires: 2015-06-07
Abstract
Abstract A particle dispersed glassy material includes ultrafine metal particles that are present in a high concentration. The particles are surrounded by a fixation component and, optionally, can be surrounded by a skeleton forming component. The glassy material is produced by firing a substrate having a film thereon that includes a polymer composite having the ultrafine particles uniformly dispersed therein, a fixation reagent and, optionally, a skeleton forming reagent under relatively mild conditions that do not damage the substrate. A method of making the glassy material includes the steps of making a film-forming composition that includes the polymer composite, the fixation reagent and, optionally, the skeleton forming reagent, applying the composition to a substrate, drying the applied composition to produce a film and firing the film to produce the glassy material.
Inventors
- 👤 Toru Noguchi
- 👤 Kazuo Goto
- 👤 Sigehiko Hayashi
- 👤 Masahito Kawahara
- 👤 Susumu Murakami
- 👤 Yoshio Yamaguchi
- 👤 Shigehito Deki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:27
CPC Classifications
C; C03; C03C; C03C14/00; C03C14/006; C03C17/00; C03C17/006; C03C17/007; C03C17/008; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; C03C2214/00; C03C2214/08; C03C2214/16; C03C2214/30; C03C2214/32; C03C2217/00; C03C2217/40; C03C2217/43; C03C2217/44; C03C2217/45; C03C2217/46; C03C2217/47; C03C2217/475; C03C2217/479; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
A method of producing an ultrafine particle dispersed glassy material, the method comprising the steps of: (a) dissolving a polymer composite and an organometallic fixation reagent in an organic solvent to produce a film-forming composition, the polymer composite comprising a polymer having ultrafine particles dispersed therein, the particles being selected from the group consisting of: (i) a noble metal selected from the group consisting of gold, platinum, palladium, rhodium and silver; (ii) Cu 2 O; (iii) metals selected from the group consisting of titanium, vanadium, chromium, manganese, iron, nickel, copper, zinc, cadmium, yttrium, tungsten, tin, germanium, indium and gallium; and (iv) oxides of the metals disclosed in (iii); (b) applying the film-forming composition to a surface of a substrate; (c) drying the applied composition to produce a film; and (d) firing the film to produce a glassy material.
Claim 2
Independent Claim
138 words
A method of producing an ultrafine particle dispersed glassy material, the method comprising the steps of: (a) dissolving a polymer composite and an organometallic fixation reagent in an organic solvent to produce a film-forming composition, the polymer composite comprising a polymer having ultrafine particles dispersed therein, the particles being selected from the group consisting of: (i) a noble metal selected from the group consisting of gold, platinum, palladium, rhodium and silver; (ii) Cu 2 O; (iii) metals selected from the group consisting of titanium, vanadium, chromium, manganese, iron, nickel, copper, zinc, cadmium, yttrium, tungsten, tin, germanium, indium and gallium; and (iv) oxides of the metals disclosed in (iii); (b) applying the film-forming composition to a surface of a substrate; (c) drying the applied composition to produce a film; and (d) firing the film to produce a glassy material.
Claim 3
Dependent Claim
35 words
The method of claim 1 wherein the step of firing the film occurs at a temperature between about 300°-800° C. for a time period sufficient to produce a glassy oxide around the dispersed ultrafine particles.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein the fixation reagent is selected from the group consisting of metallic acid esters, organic metal complexes and organic acid metallic salts.
Claim 5
Dependent Claim
51 words
The method of claim 1 wherein the polymer composite is produced by the steps of: forming a thermodynamically unstable polymer layer having a surface; depositing a metal selected from the group of (i), (ii) and (iii) on the surface of the unstable polymer layer; and then stabilizing the unstable polymer layer.
Claim 6
Dependent Claim
31 words
The method of claim 1 wherein the step of firing the film occurs at a temperature not less than about 300° C. in an atmosphere including an inert gas and oxygen.
Claim 7
Dependent Claim
36 words
The method in accordance with claim 5 wherein the atmosphere contains less than about 1.0 volume percent oxygen and wherein the method further comprises the step of heat treating the fired film in an oxidizing atmosphere.
Claim 8
Dependent Claim
41 words
The method in accordance with claim 5 wherein the atmosphere includes at least about 1 volume percent oxygen and wherein the method further includes the step of heat treating in a mixed gas including an inert gas and a reducing gas.
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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) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |