Patent US6036910A successfully refreshed from Google Patents.
US6036910A
Expired / Lapsed
US
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Three-dimensional object by optical stereography and resin composition containing colorant for producing the same
Assignee: Nabtesco Corp
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Filing: 1997-09-23
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Granted: 2000-03-14
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Expires: 2017-09-23
Abstract
Abstract A resin composition for three-dimensional object by optical stereolithography containing a colorant, such as carbon black, in an amount of 0.05 to 0.5% by weight can provide a colored three-dimensional object which has excellent physical and mechanical properties such as dimensional accuracy, shape stability, hardness and tensile strength and elastic modulus in tension, as well as light-shielding properties, gives a massive impression and is colorful at a high optical shaping speed and in a good productivity.
Inventors
- 👤 Yorikazu Tamura
- 👤 Tsuneo Hagiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; B; B33; B33Y; B33Y70/00; B33Y70/10; G03F7/0037
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A method for producing a three-dimensional object by optical stereolithography which comprises irradiating a resin composition which has been poured in a mold having a desired three-dimensional shape to thereby cure the composition in the shape of the mold, said composition being liquid at ambient temperature and comprising a photopolymerizable compound, a photopolymerization initiator present in an amount of 0.1 to 10% by weight of the composition and a colorant comprising carbon black having an average particle diameter of 200 to 1000 Å and a pH of 7 to 8, said colorant being present in an amount of 0.05 to 0.5% by weight, based on the weight of the composition.
Claim 2
Independent Claim
110 words
A method for producing a three-dimensional object by optical stereolithography which comprises irradiating a resin composition which has been poured in a mold having a desired three-dimensional shape to thereby cure the composition in the shape of the mold, said composition being liquid at ambient temperature and comprising a photopolymerizable compound, a photopolymerization initiator present in an amount of 0.1 to 10% by weight of the composition and a colorant comprising carbon black having an average particle diameter of 200 to 1000 Å and a pH of 7 to 8, said colorant being present in an amount of 0.05 to 0.5% by weight, based on the weight of the composition.
Claim 3
Dependent Claim
34 words
The method of claim 1 wherein the photopolymerizable compound is at least one member selected from the group consisting of acrylate compounds, urethane acrylate compounds, epoxy compounds, epoxy acrylate compounds and vinyl ether compounds.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein the photopolymerization initiator is at least one member selected from the group consisting of photo-radical polymerization initiators and photo-cationic polymerization initiators.
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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) | 2003-03-14 | 2003-09-13 | 2004-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-14 | 2007-09-13 | 2008-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-14 | 2011-09-13 | 2012-03-14 | $7700.00 | Window Closed / Lapsed |