US Patent No: 6,749,779

Number of patents in Portfolio can not be more than 2000

Precision integral articles

ALSO PUBLISHED AS: 20020055007

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Abstract

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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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Patent Owner(s)

Patent OwnerAddressTotal Patents
CLARITY POLYMERS, LLCEMERYVILLE, CA7

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hino, Toshiaki Berkely, CA 26 88
Houston, Michael R Mobile, AL 35 236
Soane, David S Piedmont, CA 200 3422

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Minnesota Mining and Manufacturing Company (3)
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 22 1994
 
SOANE TECHNOLOGIES, INC. (3)
5,110,514 Controlled casting of a shrinkable material 148 1989
5,114,632 Controlled casting of a shrinkable material 27 1990
5,278,243 High impact resistant macromolecular networks 18 1992
 
BASF AKTIENGESELLSCHAFT (2)
4,430,417 Photopolymerizable mixtures containing elastomeric block polymers and photocurable elements produced therefrom 53 1982
6,111,012 Polymer compositions for graft copolymer as well as mixtures thereof and thermoplastic compounds containing them 8 1997
 
E. I. DU PONT DE NEMOURS AND COMPANY (2)
4,323,636 Photosensitive block copolymer composition and elements 97 1981
4,981,912 Shaped article of a crosslinked elastomer 14 1988
 
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) (2)
5,914,174 Lens or semi-finished blank comprising photochromic resin compositions 66 1996
5,907,386 Method of manufacturing a progressive optic 16 1997
 
Johnson & Johnson Vision Products, Inc. (2)
5,779,943 Molded polymeric object with wettable surface made from latent-hydrophilic monomers 35 1996
6,241,922 Method for manufacturing ophthalmic lenses 4 1999
 
Bayer Aktiengesellschaft (1)
5,147,700 Molding compositions of low double refraction 3 1990
 
CHRYSALIS DEVELOPMENT COMPANY, LLC (1)
6,074,579 Lens blanks and method of making a lens therefrom 58 1998
 
CIBA-GEIGY CORPORATION (1)
4,837,289 UV- and heat curable terminal polyvinyl functional macromers and polymers thereof 78 1988
 
CONGOLEUM CORPORATION (1)
5,830,937 Coating and wearlayer compositions for surface coverings 41 1993
 
DAINIPPON INK AND CHEMICALS, INC. (1)
4,402,887 Sheet-like articles of polyvinyl chloride 33 1979
 
DEN-MAT CORPORATION (1)
4,264,489 Provisional crown-and-bridge resin containing tetrahydrofuryl methacrylate 14 1980
 
DENTSPLY RESEARCH & DEVELOPMENT CORP. (1)
4,698,373 Stable one part dental compositions employing ipn technology 35 1984
 
DRUG ROYALTY CORP. INC. (1)
5,723,541 Ocular lens composition and method of formation 11 1994
 
ESSILOR TECHNOLOGIES OF AMERICA, INC. (1)
5,372,755 Method for making ophthalmic lenses 37 1993
 
FUJINON CORPORATION (1)
6,270,699 Production method for molding optical components 3 2000
 
HAKAWA RUBBER CO., LTD., (1)
5,185,234 Photosensitive flexographic printing plate composition 22 1991
 
INVICTA CORPORATION (1)
5,851,328 Wafer deforming composite ophthalmic lens method 102 1997
 
KIMBERLY-CLARK WORLDWIDE, INC. (1)
6,225,406 Reactive extrusion method of making inverse phase blends of poly(ethylene oxide) and polyolefin 11 1999
 
Kyowa Gas Chemical Industry Co., Ltd. (1)
5,006,415 Molded article of methacrylic resin 10 1988
 
MDV TECHNOLOGIES, INC. (1)
5,277,911 Ablatable mask of polyoxyalkylene polymer and ionic polysaccharide gel for laser reprofiling of the cornea 42 1990
 
MENICON CO., LTD. (1)
6,265,499 Process for producing a shaped product with a radical scavenger, polymerization initiator and a radical polymerizable monomer 6 1998
 
MORRISON INTERNATIONAL, INC. (1)
5,938,876 Method of making eyeglass lenses with add on segments 7 1998
 
PARAGON VISION SCIENCES, INC. (1)
5,170,192 Oxygen permeable bifocal contact lenses and their manufacture 31 1990
 
REINFORCED POLYMERS, INC. (1)
5,747,553 Low pressure acrylic molding composition with fiber reinforcement 27 1996
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
6,075,094 Methyl methacrylic resin composition, molded article comprising the same and production of the molded article 4 1998
 
SUNSOFT CORPORATION (1)
4,632,773 Method of making a contact lens material which may be identified 26 1986
 
The Yokohama Rubber Co., Ltd. (1)
6,140,450 Modified polysiloxanes, rubber compositions and tire tread rubber compositions containing the same, and reactive plasticizer 13 1998
 
Union Carbide Corporation (1)
4,524,162 Low shrinking curable molding compositions containing a poly(acrylate) 20 1983
 
United States Steel Corporation (1)
4,598,123 Impact modified methyl methacrylate polymer 25 1985

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
3M INNOVATIVE PROPERTIES COMPANY (2)
7,463,417 Optical articles from curable compositions 0 2006
7,767,728 Curable compositions for optical articles 0 2007
 
ECOVISION TECHNOLOGIES, LLC (2)
7,854,876 Apparatus and methods for modular preform mold system 1 2007
8,543,434 Systems and methods for mobile and/or modular manufacturing 1 2008
 
NOVARTIS AG (2)
7,845,615 Plastic castings molds 1 2004
8,398,903 Process for the production of contact lenses using plastic castings molds 0 2010
 
TRANSITIONS OPTICAL, INC. (2)
8,563,212 Methods for producing photosensitive microparticles, non-aqueous dispersions thereof and articles prepared therewith 0 2010
8,563,213 Methods for producing photosensitive microparticles 0 2010
 
Eco Vision Technologies, LLC (1)
8,613,613 Apparatus and methods for modular preform mold system 0 2010
 
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) (1)
7,850,879 Method for coating an ophthalmic lens within an injection molding machine 0 2006
 
ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE (1)
7,833,442 Method for coating an ophthalmic lens within an injection molding machine 0 2005
 
JOBST LA DOUS (1)
7,335,702 Photochromic plastic object 6 2003
 
SOUTHWEST RESEARCH INSTITUTE (1)
8,606,389 Method to construct and physically join building blocks into a near-net shaped part using an interfacial reaction-activation mechanism 0 2008

Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Dec 15, 2015
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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