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).

  • Polysilsesquioxane containing polymeric compositions
    Patent number: 7198639
    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: Grant
    Filed: September 13, 2002
    Date of Patent: April 3, 2007
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, James A. Bonafini, Jr.
  • Prepolymers for improved surface modification of contact lenses
    Patent number: 7176268
    Abstract: Provided are novel reactive functionalized fumaric- and itaconic-containing prepolymers and compositions comprising the prepolymers used in the manufacture of medical devices. The prepolymers can be used to provide surface modified contact lenses formed from one or more fumaric- or itaconic-containing prepolymers having reactive functionality that is complimentary to reactive, hydrophilic polymers.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: February 13, 2007
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Method for making biomedical devices
    Publication number: 20060276608
    Abstract: A method of making a silicone hydrogel biomedical device involves forming a monomer mixture comprising a silicone-containing monomer and a hydrophilic monomer, and heating the monomer mixture to reduce cloudiness of the mixture.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 7, 2006
    Inventors: Weihong Lang, Yu-Chin Lai
  • Rigid gas permeable lens material
    Publication number: 20060276605
    Abstract: A copolymer useful as a rigid gas permeable contact lens material is the polymerization product of a monomeric mixture comprising a polysiloxane-containing urethane or urea prepolymer endcapped with polymerizable ethylenically unsaturated radicals.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 7, 2006
    Inventors: Yu-Chin Lai, James Bonafini
  • High refractive index aromatic-based prepolymer precursors
    Patent number: 7132493
    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: November 7, 2006
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymer precursors
    Patent number: 7132492
    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: November 7, 2006
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Novel reactive yellow dyes useful for ocular devices
    Publication number: 20060241264
    Abstract: Novel azo-based reactive yellow dyes and a process for manufacturing and using ocular devices having blue light absorption properties. 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: June 21, 2006
    Publication date: October 26, 2006
    Inventor: Yu-Chin Lai
  • Novel reactive yellow dyes useful for ocular devices
    Publication number: 20060241263
    Abstract: Novel azo-based reactive yellow dyes and a process for manufacturing and using ocular devices having blue light absorption properties. 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: June 21, 2006
    Publication date: October 26, 2006
    Inventor: Yu-Chin Lai
  • Aromatic-based polysiloxane prepolymers and ophthalmic devices produced therefrom
    Publication number: 20060223964
    Abstract: A polysiloxane comprises diaryl, dialkyl, and arylalkyl siloxane units, and further has at least a functional group. Such polysiloxane can be further copolymerized with an additional monomer to produce polymeric compositions suitable for making ophthalmic devices. The additional monomer can be selected to produce desirable properties for ophthalmic applications, such as high refractive index and/or high elongation.
    Type: Application
    Filed: April 1, 2005
    Publication date: October 5, 2006
    Inventors: Yu-Chin Lai, Edmond Quinn
  • Surface modification of contact lenses
    Publication number: 20060217454
    Abstract: Provided are surface modified contact lenses formed from one or more fumaric- or itaconic-containing prepolymers having reactive functionality that is complimentary to reactive hydrophilic polymers.
    Type: Application
    Filed: May 30, 2006
    Publication date: September 28, 2006
    Inventors: Yu-Chin Lai, Edmond Quinn
  • Radiation-absorbing materials, ophthalmic compositions containing same, and method of treating ophthalmic devices
    Publication number: 20060197067
    Abstract: An ophthalmic composition includes a hydrophilic radiation-absorbing material, which includes a radiation-absorbing moiety coupled with a hydrophilic moiety. An ophthalmic device immersed in such a composition can obtain a radiation-absorbing property and provide protection to the wearer against such radiation. The ophthalmic composition can be formulated to achieve an effect selected from cleaning, sterilizing, storing, and combinations thereof.
    Type: Application
    Filed: March 4, 2005
    Publication date: September 7, 2006
    Inventors: Erning Xia, Yu-Chin Lai, Edmond Quinn
  • High refractive index aromatic-based prepolymers
    Patent number: 7098288
    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 31, 2005
    Date of Patent: August 29, 2006
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Reactive yellow dyes useful for ocular devices
    Patent number: 7098283
    Abstract: Novel azo-based reactive yellow dyes and a process for manufacturing and using ocular devices having blue light absorption properties. 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: Grant
    Filed: September 8, 2003
    Date of Patent: August 29, 2006
    Assignee: Bausch & Lomb Incorporated
    Inventor: Yu-Chin Lai
  • Surface modification of contact lenses
    Patent number: 7084188
    Abstract: Provided are surface modified contact lenses formed from one or more fumaric- or itaconic-containing prepolymers having reactive functionality that is complimentary to reactive hydrophilic polymers.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: August 1, 2006
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • High refractive index aromatic-based prepolymers
    Patent number: 7074873
    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 31, 2005
    Date of Patent: July 11, 2006
    Assignee: Rausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Edmond T. Quinn
  • Hydrogel copolymers for biomedical devices
    Publication number: 20060142525
    Abstract: Hydrogel copolymers are useful for forming biomedical devices, particularly ophthalmic devices including contact lenses, intraocular lenses and ophthalmic implants. The copolymers have a desirable combination of oxygen permeability, tensile modulus, and water content, especially for soft contact lenses.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 29, 2006
    Inventors: Yu-Chin Lai, Weihong Lang, Edmond Quinn, Dominic Ruscio
  • Polysiloxane prepolymers for biomedical devices
    Publication number: 20060142526
    Abstract: A polysiloxane prepolymer that is useful for forming biomedical devices has the formula: M(*Dii*PS)x*Dii*M??(I) wherein: each M is independently a polymerizable ethylenically unsaturated radical; each Dii is independently a diradical residue of a diisocyanate; each PS is independently a diradical residue of a polysiloxane-diol or a polysiloxane-diamine; each * is independently —NH—CO—NH—, —NH—COO— or —OCO—NH—; and x is at least 2.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 29, 2006
    Inventors: Yu-Chin Lai, Weihong Lang, Edmond Quinn
  • Polysiloxane prepolymers for biomedical devices
    Publication number: 20060142524
    Abstract: A polysiloxane prepolymer that is useful for forming biomedical devices comprises blocks (I) and (II) and is terminated at each end with an ethylenically unsaturated radical: (*Dii*Diol*Dii*PS)x??(I) (*Dii*PS)y??(II) wherein: each Dii is independently a diradical residue of a diisocyanate; each Diol is independently a diradical residue of a diol having 1 to 10 carbon atoms; each PS is independently a diradical residue of a polysiloxane-containing diol or diamine; each * is independently —NH—CO—NH—, —NH—COO— or —OCO—NH—: x represents the number of blocks (I) and is at least 2, and y represents the number of blocks (II) and is at least 1.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 29, 2006
    Inventors: Yu-Chin Lai, Weihong Lang, Edmond Quinn
  • Novel prepolymers useful in biomedical devices
    Publication number: 20060105047
    Abstract: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.
    Type: Application
    Filed: January 13, 2006
    Publication date: May 18, 2006
    Applicant: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Louis Baccei
  • High refractive index silicone-containing prepolymers with blue light absorption capability
    Patent number: 7033391
    Abstract: A process for producing silicone-containing prepolymers capable of absorbing blue light 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: Grant
    Filed: September 8, 2003
    Date of Patent: April 25, 2006
    Assignee: Bausch & Lomb Incorporated
    Inventors: Yu-Chin Lai, Dominic V. Ruscio