US Patent No: 6,749,779
Number of patents in Portfolio can not be more than 2000
Precision integral articles
Stats
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Jun 15, 2004
Issued date -
Sep 14, 2001
filing date -
09/952,661
serial no -
In Force
status
Importance
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Abstract
This disclosure describes a processing approach for the rapid and efficient in-situ polymerization of specially prepared precursor mixtures to achieve near-net-shape production of objects/articles with exact dimensions. The process relies on the use of polymerizable compositions comprised of a mixture of a reactive plasticizer and an initiator, optionally also including a dead polymer, which compositions are semi-solid-like and induce little shrinkage upon curing as a result of their partially polymerized nature prior to processing. The articles of the invention have a surface and an interior core, the composition of the surface material being distinct from the composition of the core material while at the same time the surface and the core are an integral, monolithic entity. In addition, the articles are dimensionally stable and exhibit high fidelity replication.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,449,703 Method of making shaped dental articles via photoiniferter polymerization of the dental compositions | 21 | 1994 | |
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| 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 | 65 | 1988 | |
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| 5,830,937 Coating and wearlayer compositions for surface coverings | 39 | 1993 | |
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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 | Dec 15, 2015 |
| 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 |