Patent US5451444A successfully refreshed from Google Patents.
US5451444A
Expired / Lapsed
US
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Carbon-coated inorganic substrates
Assignee: Corning Inc
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Filing: 1993-01-29
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Granted: 1995-09-19
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Expires: 2013-01-29
Abstract
Abstract A composite including an inorganic substrate having an outer surface from which pores extend into the substrate and a coating extending over the substrate's outer surface as a substantially uninterrupted layer of carbon. The coating penetrates into the pores of the inorganic substrate. The composite can be made by a process including the steps of contacting an inorganic substrate with a coating and impregnating liquid consisting essentially or wholly of a carbon precursor liquid, treating the inorganic substrate under conditions effective to cure substantially the carbon precursor liquid, and heating the inorganic substrate under conditions effective to convert substantially the cured carbon precursor liquid to carbon.
Inventors
- 👤 Evelyn M. DeLiso
- 👤 Kishor P. Gadkaree
- 👤 Joseph F. Mach
- 👤 Kevin P. Streicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:26
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/20; B01J20/28; B01J20/28014; B01J20/2803; B01J20/28042; B01J20/28045; B01J20/28054; B01J20/28095; B01J20/28097; B01J20/30; B01J20/3042; B01J20/3078; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3234; B01J20/324; B01J20/3291; B01J20/3293; B01J2220/00; B01J2220/40; B01J2220/48; B01J2220/4812; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/30
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
44 words
A composite comprising: an inorganic monolithic substrate having surfaces with pores which extend into said substrate; and a coating extending over said substrate's surfaces as a substantially uninterrupted, adherent layer of activated carbon, wherein said coating penetrates into said pores of said inorganic substrate.
Claim 2
Dependent Claim
44 words
A composite comprising: an inorganic monolithic substrate having surfaces with pores which extend into said substrate; and a coating extending over said substrate's surfaces as a substantially uninterrupted, adherent layer of activated carbon, wherein said coating penetrates into said pores of said inorganic substrate.
Claim 3
Dependent Claim
24 words
A composite according to claim 1, wherein said substrate is formed from a material selected from the group consisting of ceramic and metallic materials.
Claim 4
Dependent Claim
33 words
A composite according to claim 1, wherein said substrate is formed from a material selected from the group consisting of alumino-silicates, silicates, titanates, zirconates, zirconia, zirconia-spinel, magnesium alumino-silicates, alumina, spinel, mullite, and cordierite.
Claim 5
Dependent Claim
19 words
A composite according to claim 1, wherein said substrate is formed from an alloy including Fe, Ni, or Co.
Claim 6
Dependent Claim
23 words
A composite according to claim 4, wherein said substrate is formed from an alloy consisting essentially of an iron group metal and aluminum.
Claim 7
Dependent Claim
21 words
A composite according to claim 4, wherein said substrate is formed from an alloy consisting essentially of Fe, Al, and Cr.
Claim 8
Dependent Claim
30 words
A composite according to claim 1, wherein said pores of said substrate create an interconnecting porosity within said substrate and said carbon coating is physically interlocked within said interconnecting porosity.
Claim 9
Dependent Claim
11 words
A composite according to claim 7, wherein said substrate comprises cordierite.
Claim 10
Dependent Claim
32 words
A composite according to claim 1, wherein said substrate is a ceramic honeycomb having a matrix of thin walls forming a multiplicity of open-ended cells extending between the ends of said honeycomb.
Claim 11
Dependent Claim
34 words
A composite according to claim 9, wherein said honeycomb has at least about 7.75 cells per square centimeter and said thin walls have a thickness in the range of about 0.05 to 1.27 millimeters.
Claim 12
Dependent Claim
24 words
A composite according to claim 9, wherein said carbon coating comprises no more than about 50 percent of the total weight of said honeycomb.
Claim 13
Dependent Claim
24 words
A composite according to claim 11, wherein said carbon coating comprises no more than about 30 percent of the total weight of said honeycomb.
Claim 14
Dependent Claim
19 words
A composite according to claim 9, wherein said honeycomb has an overall porosity of at least about 25 percent.
Claim 15
Dependent Claim
19 words
A composite according to claim 13, wherein said honeycomb has an overall porosity of at least about 45 percent.
Claim 16
Dependent Claim
22 words
A composite according to claim 1, wherein said coating is highly resistant to chipping or flaking off of said inorganic monolithic substrate.
Claim 17
Dependent Claim
23 words
A composite according to claim 1, wherein said coating is distributed substantially throughout and anchored in the pores of said inorganic monolithic substrate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-09-18 | 1999-03-20 | 1999-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-18 | 2003-03-20 | 2003-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-18 | 2007-03-20 | 2007-09-19 | $7700.00 | Window Closed / Lapsed |