US Patent No: 6,570,714
Number of patents in Portfolio can not be more than 2000
Precision composite article
Stats
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May 27, 2003
Issued date -
Dec 5, 2001
filing date -
10/004,455
serial no -
In Force
status
Importance
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Abstract
The invention is directed to a method for making composite articles, including optical lenses, which includes the steps of obtaining a substrate; placing a semi-solid-like polymerizable composition in contact with at least one of the front or back surface of the substrate; compressing or heating the resulting semi-solid/substrate sandwich between two mold halves, where the mold contacting the semi-solid polymerizable material has a desired surface geometry; and exposing the semi-solid/substrate sandwich to a source of polymerizing energy. The resulting composite article has the desirable characteristics of the substrate but is also easily fabricated as a result of the semi-solid molding process. Also included within the present invention is a composite article comprising a substrate portion and at least one layer of a cured resin bonded to the substrate portion, the cured resin comprising an interpenetrating crosslinked polymer network of reactive plasticizer within a dead polymer. In one embodiment, the reactive plasticizer polymer network is further crosslinked to the dead polymer. The composite article exhibits dimensional stability and high-fidelity replication of an internal mold cavity.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,510,593 Information disk of grooved, metal-coated crosslinked polymeric layer | 19 | 1982 | |
| 4,785,064 Ultra-violet light curable compositions for abrasion resistant articles | 22 | 1986 | |
| 5,449,703 Method of making shaped dental articles via photoiniferter polymerization of the dental compositions | 21 | 1994 | |
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| 5,110,514 Controlled casting of a shrinkable material | 143 | 1989 | |
| 5,114,632 Controlled casting of a shrinkable material | 26 | 1990 | |
| 5,278,243 High impact resistant macromolecular networks | 17 | 1992 | |
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| 4,430,417 Photopolymerizable mixtures containing elastomeric block polymers and photocurable elements produced therefrom | 50 | 1982 | |
| 6,111,012 Polymer compositions for graft copolymer as well as mixtures thereof and thermoplastic compounds containing them | 8 | 1997 | |
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| 4,323,636 Photosensitive block copolymer composition and elements | 83 | 1981 | |
| 4,981,912 Shaped article of a crosslinked elastomer | 11 | 1988 | |
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| 5,914,174 Lens or semi-finished blank comprising photochromic resin compositions | 63 | 1996 | |
| 5,907,386 Method of manufacturing a progressive optic | 14 | 1997 | |
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| 5,779,943 Molded polymeric object with wettable surface made from latent-hydrophilic monomers | 31 | 1996 | |
| 6,241,922 Method for manufacturing ophthalmic lenses | 4 | 1999 | |
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| 5,147,700 Molding compositions of low double refraction | 3 | 1990 | |
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| 6,074,579 Lens blanks and method of making a lens therefrom | 58 | 1998 | |
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| 4,837,289 UV- and heat curable terminal polyvinyl functional macromers and polymers thereof | 66 | 1988 | |
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| 4,402,887 Sheet-like articles of polyvinyl chloride | 30 | 1979 | |
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| 4,264,489 Provisional crown-and-bridge resin containing tetrahydrofuryl methacrylate | 14 | 1980 | |
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| 4,698,373 Stable one part dental compositions employing ipn technology | 32 | 1984 | |
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| 5,723,541 Ocular lens composition and method of formation | 11 | 1994 | |
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| 5,372,755 Method for making ophthalmic lenses | 36 | 1993 | |
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| 6,270,699 Production method for molding optical components | 3 | 2000 | |
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| 5,185,234 Photosensitive flexographic printing plate composition | 21 | 1991 | |
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| 5,851,328 Wafer deforming composite ophthalmic lens method | 101 | 1997 | |
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| 6,225,406 Reactive extrusion method of making inverse phase blends of poly(ethylene oxide) and polyolefin | 11 | 1999 | |
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| 5,006,415 Molded article of methacrylic resin | 10 | 1988 | |
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| 5,277,911 Ablatable mask of polyoxyalkylene polymer and ionic polysaccharide gel for laser reprofiling of the cornea | 31 | 1990 | |
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| 6,265,499 Process for producing a shaped product with a radical scavenger, polymerization initiator and a radical polymerizable monomer | 6 | 1998 | |
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| 5,938,876 Method of making eyeglass lenses with add on segments | 7 | 1998 | |
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| 5,170,192 Oxygen permeable bifocal contact lenses and their manufacture | 31 | 1990 | |
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| 5,747,553 Low pressure acrylic molding composition with fiber reinforcement | 21 | 1996 | |
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| 6,075,094 Methyl methacrylic resin composition, molded article comprising the same and production of the molded article | 4 | 1998 | |
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| 4,632,773 Method of making a contact lens material which may be identified | 26 | 1986 | |
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| 6,140,450 Modified polysiloxanes, rubber compositions and tire tread rubber compositions containing the same, and reactive plasticizer | 12 | 1998 | |
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| 4,524,162 Low shrinking curable molding compositions containing a poly(acrylate) | 20 | 1983 | |
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| 4,598,123 Impact modified methyl methacrylate polymer | 25 | 1985 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 27, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |