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US4647499A
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Shaped body of calcium silicate and process for producing same
Assignee: Osaka Packing Seizosho KK
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Filing: 1984-12-28
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Granted: 1987-03-03
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Expires: 2004-12-28
Abstract
Abstract A calcium silicate shaped body which comprises a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, and at least one inorganic inactive substance selected from among carbonaceous substance, carbide, nitride, silicide and metallic oxide which is physically united with the secondary particles, the shaped body containing the inactive substance in an amount of 21 to 70% by weight; and a calcium silicate shaped body which comprises a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, and at least one inorganic inactive substance selected from among carbonaceous substance, carbide, nitride, silicide and metal oxide and physically united with the secondary particles, and an amorphous siliceous substance.
Inventors
- 👤 Akira Takahashi
- 👤 Kazuo Shibahara
- 👤 Katsuhiro Morimoto
- 👤 Hiromasa Samma
- 👤 Kazuhiko Kubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:11
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/24997; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
63 words
A calcium silicate shaped body comprising a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, and at least one inorganic inactive substance selected from among carbonaceous substance, carbide, nitride, silicide and metallic oxide and physically united with the secondary particles, the shaped body containing the inactive substance in an amount of 21 to 70% by weight.
Claim 2
Dependent Claim
63 words
A calcium silicate shaped body comprising a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, and at least one inorganic inactive substance selected from among carbonaceous substance, carbide, nitride, silicide and metallic oxide and physically united with the secondary particles, the shaped body containing the inactive substance in an amount of 21 to 70% by weight.
Claim 3
Dependent Claim
26 words
A shaped body as defined in claim 1 wherein the inactive substance is physically united with the secondary particles of calcium silicate crystals as enclosed therein.
Claim 4
Dependent Claim
44 words
A shaped body as defined in claim 1 wherein the secondary particles of calcium silicate crystals are originally in the form of substantially globular shells having an outside diameter of about 5 to about 150 μm and formed of three-dimensionally interlocked calcium silicate crystals.
Claim 5
Dependent Claim
22 words
A shaped body as defined in claim 1 which contains the inactive substance in an amount of 25 to 55% by weight.
Claim 6
Dependent Claim
80 words
A shaped body as defined in claim 1 wherein the carbonaceous substance is at least one of active carbon, charcoal, coal, carbon black and graphite, the carbide being at least one of silicon carbide, boron carbide and titanium carbide, the nitride being at least one of silicon nitride, boron nitride and titanium nitride, the silicide being calcium silicide, the metallic oxide being at least one of iron oxide, titanium oxide, tin oxide, manganese oxide, zirconium oxide, ilmenite, zircon and chromite.
Claim 7
Dependent Claim
19 words
A shaped body as defined in claim 1 wherein the calcium silicate crystals are tobermorite crystals and/or xonotlite crystals.
Claim 8
Dependent Claim
51 words
A calcium silicate shaped body comprising a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, at least one inorganic inactive substance selected from among carbonaceous substance, carbide, nitride, silicide and metallic oxide and physically united with the secondary particles, and an amorphous siliceous substance.
Claim 9
Dependent Claim
51 words
A calcium silicate shaped body comprising a multiplicity of interconnected secondary particles of calcium silicate crystals, voids interspersed between the secondary particles, at least one inorganic inactive substance selected from among carbonaceous substance, carbide, nitride, silicide and metallic oxide and physically united with the secondary particles, and an amorphous siliceous substance.
Claim 10
Dependent Claim
26 words
A shaped body as defined in claim 7 wherein the inactive substance is physically united with the secondary particles of calcium silicate crystals as enclosed therein.
Claim 11
Dependent Claim
44 words
A shaped body as defined in claim 7 wherein the secondary particles of calcium silicate crystals are originally in the form of substantially globular shells having an outside diameter of about 5 to about 150 μm and formed of three-dimensionally interlocked calcium silicate crystals.
Claim 12
Dependent Claim
80 words
A shaped body as defined in claim 7 wherein the carbonaceous substance is at least one of active carbon, charcoal, coal, carbon black and graphite, the carbide being at least one of silicon carbide, boron carbide and titanium carbide, the nitride being at least one of silicon nitride, boron nitride and titanium nitride, the silicide being calcium silicide, the metallic oxide being at least one of iron oxide, titanium oxide, tin oxide, manganese oxide, zirconium oxide, ilmenite, zircon and chromite.
Claim 13
Dependent Claim
22 words
A shaped body as defined in claim 7 which contains the inactive substance in an amount of 2 to 60% by weight.
Claim 14
Dependent Claim
22 words
A shaped body as defined in claim 11 which contains the inactive substance in an amount of 5 to 50% by weight.
Claim 15
Dependent Claim
31 words
A shaped body as defined in claim 7 wherein the amorphous siliceous substance is at least one of white carbon, ferrosilicon dust, silicon dust, diatomaceous earth, fly ash and silica gel.
Claim 16
Dependent Claim
15 words
A shaped body as defined in claim 7 wherein the amorphous siliceous substance is Opsil-II.
Claim 17
Dependent Claim
23 words
A shaped body as defined in claim 7 which contains the amorphous siliceous substance in an amount of 2 to 60% by weight.
Claim 18
Dependent Claim
23 words
A shaped body as defined in claim 15 which contains the amorphous siliceous substance in an amount of 5 to 50% by weight.
Claim 19
Dependent Claim
28 words
A shaped body as defined in claim 7 which contains the inactive substance and the amorphous siliceous substance in a combined amount of 4 to 70% by weight.
Claim 20
Dependent Claim
28 words
A shaped body as defined in claim 17 which contains the inactive substance and the amorphous siliceous substance in a combined amount of 10 to 50% by weight.
Claim 21
Dependent Claim
19 words
A shaped body as defined in claim 7 wherein the calcium silicate crystals are tobermorite crystals and/or xonotlite crystals.
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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) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |