USPatentGranted
B2Creep resistant zircon refractory material used in a glass manufacturing system
Granted 9 May 2006 · 2 office actions
Assignee: Corning Incorporated
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: Ellen K. Brackman, Donald J. Ames, Donald L. Guile · Examiner: David Sample · AU 1755 · TC 1700
Application
10/738,425
filed 16 Dec 2003
Publication
US 20050130830
published 16 Jun 2005
Patent· this page
US 7,041,614
granted 9 May 2006
28
Claims
3 independent
55
File wrapper
transactions
2023
20-year term
term adjustment not held
none
Litigation
checked
5
Classifications
C04B35/48, C04B35/49
10
Citations
10 cites · 0 cited by
Life of the patent
9 dated events⤢ drag to zoom
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Abstract
A glass manufacturing system is described herein that has a forming device (e.g., isopipe) which is made from a zircon refractory material that has an improved creep resistance property. The zircon refractory material has a composition with at least the following elements: ZrSiO 4 (98.75–99.68 wt %); ZrO 2 (0.01–0.15 wt %); TiO 2 (0.23–0.50 wt %); and Fe 2 O 3 (0.08–0.60 wt %).
Claims
28 · 3 independent · depth 328 granted claims
›1.independentA zircon refractory material having a composition including the following elements:nZrSiO4 (98.75–99.68 wt %)ZrO2 (0.01–0.15 wt %)TiO2 (0.23–0.5…+8
›2.↳ 1The zircon refractory material of claim 1, wherein said ZrSiO4 includes a known amount of TiO2 and Fe2O3 not counting said TiO2(0.23–0.50 wt %) and …d2
›3.↳ 1The zircon refractory material of claim 1, wherein a binder and a dispersant were added to batch materials including ZrSiO4, ZrO2, TiO2 and Fe2O3 all …d2+3
›4.↳ 3The zircon refractory material of claim 3, wherein said binder (2.00–4.00%) is polyethylene glycol.d3
›5.↳ 3The zircon refractory material of claim 3, wherein said dispersant (0.06–0.25%) is polyelectrolyte.d3
›6.↳ 3The zircon refractory material of claim 3, wherein said dispersant (0.06–0.25%) is ammonium polymethacrylate and water.d3
›7.↳ 1The zircon refractory material of claim 1, wherein said zircon refractory material has the following composition:nZrSiO4 (98.75–99.65 wt %)ZrO2 (0.0…d2
›8.↳ 1The zircon refractory material of claim 1, wherein said zircon refractory material has the following composition:nZrSiO4 (98.95–99.55 wt %)ZrO2(0.03…d2
›9.↳ 1The zircon refractory material of claim 1, wherein the zircon refractory material is used in a glass manufacturing system.d2
›10.independentA method for producing a zircon refractory material, said method comprising the steps of:nmixing a plurality of batch materials including:nZrSiO4 (by …+9
›11.↳ 10The method of claim 10, wherein said step of forming includes:nspray drying the mixed batch materials; andpressing the spray dryed batch materials to …d2
›12.↳ 10The method of claim 10, wherein said ZrSiO4 includes a known amount of TiO2 and Fe2O3 not counting said batched TiO2 (0.23–0.50 wt %) and Fe2O3 (0.0…d2
›13.↳ 10The method of claim 10, wherein a binder and a dispersant were added to batch materials including ZrSiO4, ZrO2, TiO2 and Fe2O3 all of which are used t…d2+3
›14.↳ 13The method of claim 13, wherein said binder (2.00–4.00%) is polyethylene glycol.d3
›15.↳ 13The method of claim 13, wherein said dispersant (0.06–0.25%) is polyelectrolyte.d3
›16.↳ 13The method of claim 13, wherein said dispersant (0.06–0.25%) is ammonium polymethacrylate and water.d3
›17.↳ 10The method of claim 10, wherein said zircon refractory material has the following composition:nZrSiO4 (by difference)ZrO2 (0.02–0.15 wt %)TiO2 (0.23…d2
›18.↳ 10The method of claim 10, wherein said zircon refractory material has the following composition:nZrSiO4 (by difference)Zro2(0.03–0.15 wt %)TiO2(0.30 d2
›19.↳ 10The method of claim 10, wherein the zircon refractory material is used in a glass manufacturing system.d2
›20.independentA glass manufacturing system comprising:nat least one vessel for melting batch materials; anda forming vessel for receiving the melted batch materials…+8
›21.↳ 20The glass manufacturing system of claim 20, wherein said at least one vessel includes a melting, fining, mixing or delivery vessel.d2
›22.↳ 20The glass manufacturing system of claim 20, wherein said ZrSiO4 includes a known amount of TiO2 and Fe2O3 not counting said batched TiO2 (0.23–0.50 …d2
›23.↳ 20The glass manufacturing system of claim 20, wherein a binder and a dispersant were added to batch materials including ZrSiO4, ZrO2, TiO2 and Fe2O3 all…d2+3
›24.↳ 23The glass manufacturing system of claim 23, wherein said binder is polyethylene glycol.d3
›25.↳ 23The glass manufacturing system of claim 23, wherein said dispersant is polyelectrolyte.d3
›26.↳ 23The glass manufacturing system of claim 23, wherein said dispersant is ammonium polymethacrylate and water.d3
›27.↳ 20The glass manufacturing system of claim 20, wherein said zircon refractory material has the following composition:nZrSiO4 (by difference)ZrO2(0.02–0…d2
›28.↳ 20The glass manufacturing system of claim 20, wherein said zircon refractory material has the following composition:nZrSiO4 (by difference)Zro2 (0.03–…d2
Classifications
5 codesIPC · International Patent Classification
Section C — Chemistry; metallurgy
- C04B35/48
- C04B35/49
USPC · US Patent Classification
501/106110/323501/103
Claim changes
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Pendency
2.4 y
875 days filing → grant
Office actions
1
non-final + final
Responses
1
1 RCE
Examiner
David Sample
art unit 1755 · TC 1700
Law firm
Citations: 10 back · 0 forward
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1 priority documents›Priority documents — 1
| Type | Document | Date |
|---|---|---|
| related publication | US 20050130830 A1 | 16 Jun 2005 |
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