US4524100A
Expired / Lapsed
US
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Inorganic composite and the preparation thereof
Assignee: Nikkan Industries Co Ltd
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Filing: 1983-05-10
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Granted: 1985-06-18
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Expires: 2003-05-10
Abstract
Abstract There is prepared in inorganic composite containing a needle-like inorganic material or a fiber-like inorganic material which is present as a mixture in isotropic solid vitreous inorganic material while maintaining its needle-like or fiber-like structure. The inorganic composite is prepared by a process comprising the steps of kneading a mixture containing a vitreous inorganic material and a needle-like or fiber-like inorganic material which does not melt at the softening point of the vitreous material; molding the mixture into a predetermined shape; and calcining the molded mixture at a temperature higher than the softening point of the vitreous inorganic material and below the melting point of said needle-like or fiber-like inorganic material.
Inventors
- 👤 Tadao Shimizu
- 👤 Noriyuki Shimizu
- 👤 Shoji Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:59
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; C; C03; C03C; C03C14/00; C03C14/002; C04; C04B; C04B14/00; C04B14/38; C04B14/46; C04B32/00; C04B32/005; C03C2214/00; C03C2214/02; C03C2214/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249949; Y10T428/25; Y10T428/252; Y10T428/29; Y10T428/2982; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
69 words
An inorganic composite of high density comprising (1) a needle-like or fiber-like inorganic material, or mixture thereof, present in an admixture with (2) an isotropic vitreous inorganic material, said needle-like or fiber-like inorganic material maintaining its needle-like or fiber-like form, said composite having been formed by directly bonding material (1) to material (2) by molding and heating to form a composite having a specific gravity of 2.0 to 2.6.
Claim 2
Dependent Claim
69 words
An inorganic composite of high density comprising (1) a needle-like or fiber-like inorganic material, or mixture thereof, present in an admixture with (2) an isotropic vitreous inorganic material, said needle-like or fiber-like inorganic material maintaining its needle-like or fiber-like form, said composite having been formed by directly bonding material (1) to material (2) by molding and heating to form a composite having a specific gravity of 2.0 to 2.6.
Claim 3
Dependent Claim
27 words
An inorganic composite according to claim 1 wherein the vitreous inorganic material has a softening point below the melting point of the needle-like or fiber-like inorganic material.
Claim 4
Dependent Claim
39 words
An inorganic composite according to claim 2 which contains 2 to 50% of the needle-like or fiber-like inorganic material (1) and 98 to 50% of the vitreous inorganic material (2) based on the total weight of (1) and (2).
Claim 5
Dependent Claim
23 words
An inorganic composite according to claim 3 containing 0 to 20% of the total weight of the composite of a third inorganic material.
Claim 6
Dependent Claim
12 words
An inorganic composite according to claim 4 consisting of (1) and (2).
Claim 7
Dependent Claim
25 words
An inorganic composite according to claim 4 including a third inorganic material in an amount effective to alter the dielectric characteristics of the inorganic composite.
Claim 8
Dependent Claim
19 words
An inorganic composite according to claim 6 wherein the third inorganic material is titanium dioxide powder or boric acid.
Claim 9
Dependent Claim
18 words
An inorganic composite according to claim 3 including both a needle-like inorganic material and a fiber-like inorganic material.
Claim 10
Dependent Claim
12 words
An inorganic material according to claim 3 including a needle-like inorganic material.
Claim 11
Dependent Claim
14 words
An inorganic material according to claim 9 wherein the needle-like material is calcium metasilicate.
Claim 12
Dependent Claim
12 words
An inorganic material according to claim 3 including a fiber-like inorganic material.
Claim 13
Dependent Claim
28 words
An inorganic material according to claim 11 wherein the fiber-like inorganic material is potassium titanate fibers, barium titanium fibers, strontium titanate fibers, magnesium silicate fibers, titanium dioxide fibers.
Claim 14
Dependent Claim
20 words
An inorganic material according to claim 12 wherein the fiber-like inorganic material is potassium titanate fibers or magnesium silicate fibers.
Claim 15
Dependent Claim
14 words
An inorganic composite according to claim 3 wherein (1) consists of needle-like calcium metasilicate.
Claim 16
Dependent Claim
14 words
An inorganic composite according to claim 3 wherein (1) consists of potassium titanate fibers.
Claim 17
Dependent Claim
14 words
An inorganic composite according to claim 3 wherein (1) consists of magnesium silicate fibers.
Claim 18
Dependent Claim
93 words
A process for preparing an inorganic composite of high density comprising the steps of: kneading a mixture containing (1) a vitreous inorganic material with (2) a needle-like or fiber-like inorganic material which does not melt at the softening point of the vitreous inorganic material; molding the kneaded mixture into a predetermined shape; and calcining the molded material at a temperature above the softening point of the vitreous inorganic material and below the melting point of the needle-like or fiber-like inorganic material to form a composite having a specific gravity of 2.0 to 2.6.
Claim 19
Dependent Claim
93 words
A process for preparing an inorganic composite of high density comprising the steps of: kneading a mixture containing (1) a vitreous inorganic material with (2) a needle-like or fiber-like inorganic material which does not melt at the softening point of the vitreous inorganic material; molding the kneaded mixture into a predetermined shape; and calcining the molded material at a temperature above the softening point of the vitreous inorganic material and below the melting point of the needle-like or fiber-like inorganic material to form a composite having a specific gravity of 2.0 to 2.6.
Claim 20
Dependent Claim
40 words
A process according to claim 17 wherein the mixture contains 2 to 50% of the needle-like or fiber-like inorganic material (2) and 98 to 50% of the vitreous inorganic material (1) based on the total weight of (1) and (2).
Claim 21
Dependent Claim
13 words
A process according to claim 18 wherein there is employed needle-like calcium metasilicate.
Claim 22
Dependent Claim
17 words
A process according to claim 18 wherein there is employed potassium titanate fibers or magnesium silicate fibers.
Claim 23
Dependent Claim
72 words
A process for preparing an inorganic composite according to claim 18 wherein the mixture to be kneaded includes, in addition to the needle-like or fiber-like inorganic material and the vitreous inorganic material, a third additive which improves the moldability or sintering performance of the mixture or alters the dielectric constant of the inorganic composite, the third addition being present in an amount of not over 20% of the weight of the mixture.
Claim 24
Dependent Claim
31 words
A process according to claim 21 wherein the third additive is an organic material which improves moldability and is present in an amount effective to improve the moldability of the mixture.
Claim 25
Dependent Claim
33 words
A process according to claim 21 wherein the third additive is a material that improves the sintering performance and is present in an amount effective to improve the sintering performance of the mixture.
Claim 26
Dependent Claim
39 words
A process according to claim 21 wherein the third additive is an inorganic material that alters the dielectric constant of the inorganic composition and is present in an amount effective to alter the dielectric constant of the inorganic composite.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |