Patents by Inventor Yu-Chin Lai

Yu-Chin Lai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for manufacturing intraocular lenses with blue light absorption characteristics
    Publication number: 20050055090
    Abstract: A process for producing intraocular lenses (IOLs) capable of absorbing blue light and ultraviolet light using photo curing. Intraocular lenses so produced block blue light and ultraviolet light from reaching the retina of an eye implanted with the IOL. By blocking blue light and ultraviolet light from reaching the retina, the IOL thereby prevents potential damage to the retina.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 10, 2005
    Inventors: Yu-Chin Lai, Dominic Ruscio, George Green
  • Process for making silicone intraocular lens with blue light absorption properties
    Publication number: 20050055091
    Abstract: A process for producing silicone intraocular lenses (IOLs) capable of absorbing blue light. Intraocular lenses so produced block blue light from reaching the retina of an eye implanted with the IOL. By blocking blue light from reaching the retina, the IOL thereby prevents potential damage to the retina.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 10, 2005
    Inventors: Yu-Chin Lai, Dominic Ruscio
  • High refractive index aromatic-based prepolymer precursors
    Patent number: 6864341
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: March 8, 2005
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymers
    Patent number: 6864342
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: March 8, 2005
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Hydrogel from polysiloxane-containing urethane prepolymer, tris (trimethylsiloxy) silylpropyl methacrylate, and a hydrophilic comonomer
    Patent number: 6858218
    Abstract: A polyurethane based prepolymer is provided and useful in biomedical devices which provides high oxygen permeability and superior physical properties. A hydrogel is produced from a comonomer mixture containing a polysiloxane-containing urethane prepolymer, tris(trimethylsiloxy)-silylpropyl methacrylate and a hydrophilic comonomer. The hydrogel is especially useful for biomedical materials such as contact lenses and implants.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: February 22, 2005
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Louis J. Baccei
  • Process for the production of high refractive index polysiloxane-based polymeric compositions for use in medical devices
    Publication number: 20050038219
    Abstract: A process for producing polysiloxane prepolymers of improved homogeneity for use in the production of relatively high refractive index polymeric compositions is described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices such as for example intraocular lenses and corneal inlays. The preferred polymeric compositions are produced through the copolymerization of one or more polysiloxane prepolymers with hydrosilane-containing polysiloxanes.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 17, 2005
    Inventors: Yu-Chin Lai, Edmond Quinn
  • High refractive index aromatic-based prepolymer precursors
    Patent number: 6844414
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: January 18, 2005
    Assignee: Bausch and Lamb, Inc.
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymers
    Publication number: 20040254326
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Application
    Filed: July 12, 2004
    Publication date: December 16, 2004
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Process for the production of polysiloxane-based polymeric compositions for use in medical devices
    Patent number: 6805712
    Abstract: A process for producing polysiloxane prepolymers of improved homogeneity for use in the production of relatively high refractive index polymeric compositions is described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices such as for example intraocular lenses and corneal inlays. The preferred polymeric compositions are produced through the copolymerization of one or more polysiloxane prepolymers with hydrosilane-containing polysiloxanes.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: October 19, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Method of purification of polymeric medical device materials using continuous soxhlet extraction
    Patent number: 6790318
    Abstract: A process for removing contaminants and/or leachables from polymeric materials useful in the manufacture of biocompatible medical devices such as intraocular lenses, corneal inlays and contact lenses using continuous soxhlet extraction.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: September 14, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Dominic V. Ruscio, David P. Vanderbilt
  • Method for polymerizing lenses
    Patent number: 6776934
    Abstract: A method for photopolymerizing a monomer mixture to form a lens involves photopolymerizing a mixture of lens-forming monomers that includes an initiator of the formula: wherein: Ar represents an aromatic radical; Ra represents a secondary amino radical; Rb represents an ethylenically unsaturated radical or an aromatic radical; and Rc represents a secondary amino radical.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: August 17, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventor: Yu-Chin Lai
  • High refractive index aromatic-based prepolymers
    Patent number: 6777522
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: August 17, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymer precursors
    Publication number: 20040158020
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 12, 2004
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymer precursors
    Publication number: 20040158019
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 12, 2004
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymer precursors
    Publication number: 20040155373
    Abstract: Relatively high refractive index polymeric compositions and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein. The preferred polymeric compositions are produced through the copolymerization of one or more aromatic-substituted polysiloxane prepolymers with one or more aromatic monomers, alkylated monomers or hydrophilic monomers.
    Type: Application
    Filed: January 26, 2004
    Publication date: August 12, 2004
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Poly(2-oxazoline) biomedical devices
    Patent number: 6759496
    Abstract: Biomedical devices are formed from the polymerization product of a monomeric mixture including a poly(2-oxazoline) endcapped with an ethylenically unsaturated radical, such as poly(2-oxazoline) macromonomers and telechelics. Preferred devices are ophthalmic lenses, especially contact lenses and intraocular lenses.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: July 6, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventors: Jay F. Kunzler, Yu-Chin Lai, Joseph A. McGee, Paul L. Valint, Jr.
  • High refractive index polysiloxane prepolymers
    Publication number: 20040116593
    Abstract: A process for producing polysiloxane prepolymers of improved homogeneity for use in the production of relatively high refractive index polymeric compositions is described herein. Polymeric compositions so produced are useful in the production of ophthalmic devices such as for example intraocular lenses and corneal inlays.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Inventors: Yu-Chin Lai, Edmond T. Quinn, Xiaojun Michael Liu, Edmund P. Maziarz
  • Method of purification of polymeric medical device materials using continuous soxhlet extraction
    Publication number: 20040061829
    Abstract: A process for removing contaminants and/or leachables from polymeric materials useful in the manufacture of biocompatible medical devices such as intraocular lenses, corneal inlays and contact lenses using continuous soxhlet extraction.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 1, 2004
    Inventors: Yu-Chin Lai, Dominic V. Ruscio, David P. Vanderbilt
  • Polysilsesquioxane containing polymeric compositions
    Publication number: 20040054047
    Abstract: Soft, durable, polymeric compositions with one or more reactive polyhedral oligomeric silsesquioxane reinforcing agents and ophthalmic devices such as for example intraocular lenses and corneal inlays made therefrom are described herein.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 18, 2004
    Inventors: Yu-Chin Lai, James A. Bonafini
  • Intraocular lens
    Publication number: 20040002757
    Abstract: An intraocular lens for inhibiting posterior capsular opacification, or secondary cataract, includes an optic having a periphery provided with a sharp, flexible flange which presses against the posterior capsule wall thereby creating a barrier to LEC migration.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Applicant: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Dominic V. Ruscio, David P. Vanderbilt