Patents by Inventor Shiao H. Chang

Shiao H. Chang 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).

  • Patent number: 10470874
    Abstract: The invention relates to novel optical elements having improved UV protection. The optical element comprises a light adjustable optical element with a UV absorbent layer applied to at least one surface of the optical element. The invention is particularly useful in light adjustable intraocular lenses.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: November 12, 2019
    Assignee: RxSight, Inc.
    Inventors: Robert H. Grubbs, Shiao H. Chang
  • Publication number: 20190262125
    Abstract: The invention relates to novel optical elements having improved UV protection. The optical element comprises a light adjustable optical element with a UV absorbent layer applied to at least one surface of the optical element. The invention is particularly useful in light adjustable intraocular lenses.
    Type: Application
    Filed: July 20, 2015
    Publication date: August 29, 2019
    Applicant: RxSight, Inc.
    Inventors: Robert H. Grubbs, Shiao H. Chang
  • Patent number: 9883940
    Abstract: The invention relates to a multi-lens intraocular lens system having an accommodation material between the lenses. The system comprises an posterior lens attached to the posterior surface of the capsular bag and an anterior lens attached to the anterior surface of the capsular bag. The anterior and posterior lenses have different optical properties providing different degrees and types of correction. An accommodation material is placed between the anterior and posterior lenses. The accommodation material may comprise of one or more macromers, which, when polymerized, adjust the properties of the accommodation material.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: February 6, 2018
    Assignee: RxSight, Inc.
    Inventors: Okihiro Nishi, Kayo Nishi, Shiao H. Chang, Jerry Kaeni
  • Patent number: 9713527
    Abstract: The invention relates to a multi-lens intraocular lens system having an accommodation material between the lenses. The system comprises an posterior lens attached to the posterior surface of the capsular bag and an anterior lens attached to the anterior surface of the capsular bag. The anterior and posterior lenses have different optical properties providing different degrees and types of correction. An accommodation material is place between the anterior and posterior lenses. The accommodation material may comprise of one or more macromers, which, when polymerized, adjust the properties of the accommodation material.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: July 25, 2017
    Assignee: RxSight, Inc.
    Inventors: Okihiro Nishi, Kayo Nishi, Shiao H. Chang, Jerry Kaeni
  • Publication number: 20170020658
    Abstract: The invention relates to novel optical elements having improved UV protection. The optical element comprises a light adjustable optical element with a UV absorbent layer applied to at least one surface of the optical element. The invention is particularly useful in light adjustable intraocular lenses.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 26, 2017
    Applicant: Calhoun Vision, Inc,
    Inventors: Robert H. Grubbs, Shiao H. Chang
  • Publication number: 20160113761
    Abstract: The invention relates to a multi-lens intraocular lens system having an accommodation material between the lenses. The system comprises an posterior lens attached to the posterior surface of the capsular bag and an anterior lens attached to the anterior surface of the capsular bag. The anterior and posterior lenses have different optical properties providing different degrees and types of correction. An accommodation material is place between the anterior and posterior lenses. The accommodation material may comprise of one or more macromers, which, when polymerized, adjust the properties of the accommodation material.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Applicant: CALHOUN VISION, INC.
    Inventors: Okihiro Nishi, Kayo Nishi, Shiao H. Chang, Jerry Kaeni
  • Patent number: 9119710
    Abstract: The invention relates to novel optical elements having improved UV protection. The optical element comprises a light adjustable optical element with a UV absorbent layer applied to at least one surface of the optical element. The invention is particularly useful in light adjustable intraocular lenses.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: September 1, 2015
    Assignee: Calhoun Vision, Inc.
    Inventors: Robert H. Grubbs, Shiao H. Chang
  • Patent number: 9005282
    Abstract: The invention relates to a intraocular lens system having a flexible anterior lens accommodation material behind the lens. The accommodation material may comprise of one or more macromers, which, when polymerized, adjust the properties of the accommodation material. The anterior lens is flexible such that the curvature of the lens changes during accommodation. The anterior lens may be used alone or in combination with a posterior lens.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: April 14, 2015
    Assignee: Calhoun Vision, Inc.
    Inventors: Shiao H. Chang, Okihiro Nishi, Kayo Nishi, Jerry Kaeni, Ken Chuang
  • Patent number: 8361353
    Abstract: The invention relates to a novel method for preparing materials whose properties can be manipulated after fabrication. In this process, a base material is created in a manner that provides spaces or voids which can then be filled with a modifying composition. The method is particularly useful in the manufacture of light adjustable optical elements such as intraocular lenses.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: January 29, 2013
    Assignee: Calhoun Vision, Inc.
    Inventors: Axel Brait, Shiao H. Chang, Patrick Case
  • Patent number: 7988285
    Abstract: The invention relates to novel intraocular lenses. The lenses are capable of post-operative adjustment of their optical properties, including conversion from single focal lenses to multifocal lenses.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: August 2, 2011
    Assignee: Calhoun Vision, Inc.
    Inventors: Christian A. Sandstedt, Jagdish M. Jethmalani, Shiao H. Chang
  • Publication number: 20100076554
    Abstract: The invention relates to novel intraocular lenses. The lenses are capable of post-operative adjustment of their optical properties, including conversion from single focal lenses to multifocal lenses.
    Type: Application
    Filed: December 1, 2009
    Publication date: March 25, 2010
    Applicant: Calhoun Vision, Inc.
    Inventors: Christian A. Sandstedt, Jagdish M. Jethmalani, Shiao H. Chang
  • Patent number: 7560499
    Abstract: Novel blends of photo-initiators and photo-absorbers are disclosed. By the proper selection of the type and amount of absorber and initiator used in a composition, it is possible to regulate the conditions under which photo-induced reactions occur. In a specific embodiment, blends of UV initiators and photoabsorbers are used to control the conditions under which UV initiated polymerization occurs.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: July 14, 2009
    Assignee: Calhoun Vision, Inc.
    Inventors: Jagdish M. Jethmalani, Shiao H. Chang, Robert H. Grubbs
  • Publication number: 20080027537
    Abstract: Embodiments of the invention involve intraocular lenses that are light adjustable to change a focal length of the lens after it has been implanted into a person or animal. The lens includes a layer of UV absorbent material located on a rear side, which is the side facing a retina. The lens may comprise a UV reducing rim that surrounds a peripheral portion of the lens, and reduces or blocks UV light from striking the retina.
    Type: Application
    Filed: July 26, 2006
    Publication date: January 31, 2008
    Applicant: Calhoun Vision, Inc.
    Inventors: Mario Gerlach, Christian A. Sandstedt, Shiao H. Chang
  • Patent number: 7281795
    Abstract: The invention relates to novel intraocular lenses. The lenses are capable of post-operative adjustment of their optical properties, including conversion from single focal lenses to multifocal lenses.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: October 16, 2007
    Assignee: Calhoun Vision, Inc.
    Inventors: Christian A. Sandstedt, Jagdish M. Jethmalani, Shiao H. Chang
  • Patent number: 7241009
    Abstract: Methods and materials are disclosed for the production of optical elements, in particular intraocular lenses (IOL) that incorporate any amount (0 to 99%) of refraction and/or shape modulating compound into a substantially crosslinked first polymeric matrix. The materials produced according to the inventive methods exhibit certain rheological parameters useful in defining medical lenses. These medical lenses have the ability to change their refractive power via changing the refractive index and/or by altering the shape by stimulus induced polymerization.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: July 10, 2007
    Assignee: Calhoun Vision, Inc.
    Inventors: Julia A. Kornfield, Robert H. Grubbs, Shiao H. Chang, Jagdish M. Jethmalani
  • Patent number: 7237893
    Abstract: The invention relates to novel photoinitiators and their use in light adjustable compositions. The initiatives comprise two or more multiphoton chromophores linked by a bridging compound. The bridging compound consists of a material that is compatible with the base material of the light adjustable composition. The novel photoinitiator permit the readjustment of light adjustable material without the need for significant amounts of photoabsorbers.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: July 3, 2007
    Inventors: Shiao H. Chang, Robert H. Grubbs, Julia A. Kornfield, Axel Brait, Patrick Case
  • Patent number: 7074840
    Abstract: The invention relates to novel photoinitiators and their use in light adjustable compositions. The initiatives comprise two or more multiphoton chromophores linked by a bridging compound. The bridging compound consists of a material that is compatible with the base material of the light adjustable composition. The novel photoinitiator permit the readjustment of light adjustable material without the need for significant amounts of photoabsorbers.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: July 11, 2006
    Assignee: Calhoun Vision
    Inventors: Shiao H. Chang, Robert H. Grubbs, Julia A. Kornfield, Axel Brait
  • Patent number: 6851804
    Abstract: The invention relates to optical elements whose optical properties can be repeatedly adjusted over time. Through the use of modifying compositions capable of stimulus induced polymerization coupled with a blend of stimulus absorbers and initiators, it is possible to repeatedly adjust the optical properties of the element by exposing the lens to a stimulus which exceeds the absorption capacity of the stimulus absorber.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: February 8, 2005
    Inventors: Jagdish M. Jethmalani, Shiao H. Chang
  • Publication number: 20030176521
    Abstract: Novel blends of photo-initiators and photo-absorbers are disclosed. By the proper selection of the type and amount of absorber used in a composition, it is possible to regulate the conditions under which photo-induced reactions occur. In a specific embodiment, blends of UV initiators and UV absorbers are used to control the conditions under which UV initiated polymerization occurs.
    Type: Application
    Filed: December 13, 2002
    Publication date: September 18, 2003
    Applicant: CALHOUN VISION
    Inventors: Jagdish M. Jethmalani, Shiao H. Chang
  • Publication number: 20030174375
    Abstract: The invention relates to optical elements whose optical properties can be repeatedly adjusted over time. Through the use of modifying compositions capable of stimulus induced polymerization coupled with a blend of stimulus absorbers and initiators, it is possible to repeatedly adjust the optical properties of the element by exposing the lens to a stimulus which exceeds the absorption capacity of the stimulus absorber.
    Type: Application
    Filed: December 19, 2002
    Publication date: September 18, 2003
    Applicant: CALHOUN VISION, INC.
    Inventors: Jagdish M. Jethmalani, Shiao H. Chang