Patent EP0313281A2 successfully refreshed from Google Patents.
EP0313281A2
Expired / Lapsed
EP
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Pigmentary ceramic substrates bearing metal dots
Assignee: Toyota Motor Corp
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Filing: 1988-10-14
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Granted: —
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Expires: 2008-10-14
Abstract
Abstract A pigment of this invention comprises a ceramic scaly substrate(1), and metal dots(3) or alloy dots(3) formed on the surfaces of ceramic scaly substrate(1) in the ratio of from 0.05 to 95 % of the total surface area of ceramic scaly substrate(1). An inorganic compound coating film(2) may further be formed on all over the surfaces of ceramic scaly substrate(1), and metal dots(3) or alloy dots(3) may be formed on the surfaces of inorganic compound coating film(2) instead of on the surfaces of ceramic scaly substrate(1) in the same ratio. Thus, this pigment gives various hues with metallic gloss feelings due to combined effect of light reflection and light scattering with metal dots(3) or alloy dots(3) and even light interference with two pairs of reflecting surfaces when the inorganic compound coating film(2) is employed.
Inventors
- 👤 Taketoshi Minohara
- 👤 Yoshio Takagi
- 👤 Tadashi Isobe
- 👤 Keita Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:30
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0078; C09C3/00; C09C3/06; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/24; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
47 words
A pigment comprising a ceramic scaly substrate (1) characterized in that metal dots (3) or alloy dots (3) are formed on the surfaces of said ceramic scaly substrate (1) in a ratio of 0.05 to 95% of the total surface area of said ceramic scaly substrate (1).
Claim 2
Dependent Claim
47 words
A pigment comprising a ceramic scaly substrate (1) characterized in that metal dots (3) or alloy dots (3) are formed on the surfaces of said ceramic scaly substrate (1) in a ratio of 0.05 to 95% of the total surface area of said ceramic scaly substrate (1).
Claim 3
Dependent Claim
69 words
A pigment comprising a ceramic scaly substrate (1) and an inorganic compound coating film (2) formed on all over the surfaces of said ceramic scaly substrate (1) characterized in that metal dosts (3) or alloy dots (3) are formed on the surfaces of said inorganic compound coating film (2) in a ratio of from 0.05 to 95% of the total surface area of said inorganic compound coating film (2).
Claim 4
Dependent Claim
69 words
A pigment comprising a ceramic scaly substrate (1) and an inorganic compound coating film (2) formed on all over the surfaces of said ceramic scaly substrate (1) characterized in that metal dosts (3) or alloy dots (3) are formed on the surfaces of said inorganic compound coating film (2) in a ratio of from 0.05 to 95% of the total surface area of said inorganic compound coating film (2).
Claim 5
Dependent Claim
81 words
A pigment comprisng a ceramic scaly substrate (1), an inorganic compound coating film (2) formed on all over the surfaces of said ceramic scaly substrate (1) and a coloring film (4) formed on all over the surfaces of said inorganic compound coating film (2) characterized in that metal dots (3) or alloy dots (3) formed on the surfaces of said coloring film (4) in a ratio of from 0.05 to 95% of the total surface area of said coloring film (4).
Claim 6
Dependent Claim
81 words
A pigment comprisng a ceramic scaly substrate (1), an inorganic compound coating film (2) formed on all over the surfaces of said ceramic scaly substrate (1) and a coloring film (4) formed on all over the surfaces of said inorganic compound coating film (2) characterized in that metal dots (3) or alloy dots (3) formed on the surfaces of said coloring film (4) in a ratio of from 0.05 to 95% of the total surface area of said coloring film (4).
Claim 7
Dependent Claim
29 words
A pigment according to Claim 3 further characterized in that said coloring film (4) comprises one of chromium oxide (Cr₂O₃), iron oxide (Fe₂O₃), iron blue pigment and carbon black.
Claim 8
Dependent Claim
30 words
A pigment according to Claim 3 or Claim 4 further characterized in that said coloring film (4) has an average thickness of from 1 X 10⁻³ to 1 µ m.
Claim 9
Dependent Claim
39 words
A pigment according to any one of Claims 2 - 5 further characterized in that said inorganic compound coating film (2) comprises at least one of titanium dioxide (TiO₂), iron oxide (Fe₂O₃), aluminum hydroxide (Al(OH)₃), and chromium hydroxide (Cr(OH)₃).
Claim 10
Dependent Claim
33 words
A pigment according to any one of Claims 2 - 6 further characterized in that said inorganic compound coating film (2) has an average thickness of from 1 X 10⁻² to 1 µm.
Claim 11
Dependent Claim
59 words
A pigment according to any one of Claims 1 - 7 further characterized in that said metal dots (3) or alloy dots (3) are selected from the group consisting of silver (Ag), gold (Au), copper (Cu), palladium (Pd), cobalt (Co), nickel-phosphorus (Ni-P) alloy, nickel-boron (Ni-B) alloy, nickel-cobalt-phosphorus (Ni-Co-P) alloy, nickel-tungsten-phosphorus (Ni-W-P) alloy, silver-gold (Ag-Au) alloy, and cobalt-phosphorus (Co-P) alloy.
Claim 12
Dependent Claim
28 words
A pigment according to any one of Claims 1 - 8 further characterized in that said ceramic scaly substrate (1) comprises one of mica and molybdenum disulfide (MoS₂).
Claim 13
Dependent Claim
35 words
A pigment according to Claim 9 further characterized in that said mica is a thin plate having a ratio of thickness to side length which falls approximately in a range of from 1/100 to 1/20.
Claim 14
Dependent Claim
41 words
A pigment according to Claim 9 further characterized in that said mica is a thin plate having an average thickness of from 5 X 10⁻² to 10 X 10⁻² µm, and an average side length of from 3 to 50 µm.
Claim 15
Dependent Claim
25 words
A pigment according to any one of Claims 9 - 11 further characterized in that said mica is one of natural mica and synthetic mica.
Claim 16
Dependent Claim
20 words
A pigment according to Claim 12 further characterized in that said natural mica is one of muscovite, biotite and phlogopite.
References Cited (Backward Citations)
No citation records indexed.
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