Patents by Inventor David B. Chang

David B. 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: 11679272
    Abstract: A process for safely providing retinal phototherapy includes generating an interferometric signal or pattern by applying a near infrared light beam to a retinal pigment epithelium of a retina of an eye. A level or concentration of melanin within the retinal pigment epithelium of the retina is compared to a normal level or concentration using the detected interferometric signal or pattern. One or more treatment parameters of the retinal phototherapy is adjusted if the level or concentration of melanin in the retinal pigment epithelium of the eye exceeds the normal level or concentration by a predetermined amount.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: June 20, 2023
    Assignee: Ojai Retinal Technology, LLC
    Inventors: David B. Chang, Jeffrey K. Luttrull
  • Publication number: 20210346714
    Abstract: A process for heat treating biological tissue includes providing a plurality of energy emitters formed into an array. Treatment energy in the form of ultrasound energy is generated from the plurality of emitters and applied to target tissue. The treatment energy has energy and application parameters selected so as to raise the target tissue temperature sufficiently to create a therapeutic effect while maintaining an average temperature of the target tissue over several minutes at or below a predetermined temperature so as not to destroy or permanently damage the target tissue.
    Type: Application
    Filed: June 14, 2021
    Publication date: November 11, 2021
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Publication number: 20210346713
    Abstract: A process for heat treating biological tissue includes providing a plurality of energy emitters formed into an array. Treatment energy in the form of light beams is generated from the plurality of emitters and applied to target tissue. The treatment energy has energy and application parameters selected so as to raise the target tissue temperature sufficiently to create a therapeutic effect while maintaining an average temperature of the target tissue over several minutes at or below a predetermined temperature so as not to destroy or permanently damage the target tissue.
    Type: Application
    Filed: June 1, 2021
    Publication date: November 11, 2021
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Publication number: 20210346712
    Abstract: A process for heat treating biological tissue includes providing a plurality of energy emitters formed into an array. Treatment energy in the form of microwave energy is generated from the plurality of emitters and applied to target tissue. The treatment energy has energy and application parameters selected so as to raise the target tissue temperature sufficiently to create a therapeutic effect while maintaining an average temperature of the target tissue over several minutes at or below a predetermined temperature so as not to destroy or permanently damage the target tissue.
    Type: Application
    Filed: June 1, 2021
    Publication date: November 11, 2021
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 11077318
    Abstract: A process for heat treating biological tissue includes providing a plurality of energy emitters formed into an array. Treatment energy is generated from the plurality of emitters and applied to target tissue. The treatment energy has energy and application parameters selected so as to raise the target tissue temperature sufficiently to create a therapeutic effect while maintaining an average temperature of the target tissue over several minutes at or below a predetermined temperature so as not to destroy or permanently damage the target tissue.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: August 3, 2021
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 11033749
    Abstract: A process for heat treating biological tissue includes repeatedly applying a pulsed energy to a target tissue over a period of time so as to controllably raise a temperature of the target tissue to create a therapeutic effect to the target tissue without destroying or permanently damaging the target tissue. After the first treatment is concluded the application of the pulsed energy to the target tissue is halted for an interval of time. Within a single treatment session a second treatment is performed on the target tissue after the interval of time by repeatedly reapplying the pulsed energy to the target tissue so as to controllably raise the temperature of the target tissue to therapeutically treat the target tissue without destroying or permanently damaging the target tissue.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: June 15, 2021
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 10952899
    Abstract: A process for safely providing retinal phototherapy includes generating first and second light beams of a different wavelength. The first and second light beams are applied to a retinal pigment epithelium (RPE) and choroid of an eye. The amount of light reflected from the eye from the first light beam and the second light beam is measured, such as using a reflectometer. A level or concentration of the melanin within the eye is calculated using the measured amount of light reflected from the eye from the first and second light beams. When the content or density of melanin in the RPE exceeds a predetermined amount, one or more treatment parameters of the retinal phototherapy is adjusted.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: March 23, 2021
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang
  • Patent number: 10953241
    Abstract: A process that provides protective therapy for biological tissues or fluids includes applying a pulsed energy source to a target tissue or a target fluid having a chronic progressive disease or a risk of having a chronic progressive disease to therapeutically or prophylactically treat the target tissue or target fluid. The pulsed energy source has energy parameters selected so as to raise the target tissue or bodily target fluid temperature up to a predetermined temperature for a short period of time to achieve a therapeutic or prophylactic effect, while the average temperature rise of the target tissue or target fluid over a longer period of time is maintained at or below a predetermined level so as not to permanently damage the target tissue or target fluid.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: March 23, 2021
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, Benjamin W. L. Margolis, David B. Chang
  • Patent number: 10894169
    Abstract: A process that provides protective therapy for biological tissues or fluids includes applying a pulsed energy source to a target tissue or a target fluid having a chronic progressive disease or a risk of having a chronic progressive disease to therapeutically or prophylactically treat the target tissue or target fluid. A pulsed energy source having selected energy parameters may be applied to a brain of an individual who has Alzheimer's or other neurodegenerative disease or is at risk of developing such a neurodegenerative disease so as to prevent or treat the neurodegenerative disease.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: January 19, 2021
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang
  • Patent number: 10874873
    Abstract: A process for heat treating biological tissue includes repeatedly applying a pulsed energy to a target tissue over a period of time so as to controllably raise a temperature of the target tissue to create a therapeutic effect to the target tissue without destroying or permanently damaging the target tissue. After the first treatment is concluded the application of the pulsed energy to the target tissue is halted for an interval of time. Within a single treatment session a second treatment is performed on the target tissue after the interval of time by repeatedly reapplying the pulsed energy to the target tissue so as to controllably raise the temperature of the target tissue to therapeutically treat the target tissue without destroying or permanently damaging the target tissue.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: December 29, 2020
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Publication number: 20200398072
    Abstract: A process for heat treating biological tissue includes repeatedly applying a pulsed energy to a target tissue over a period of time so as to controllably raise a temperature of the target tissue to create a therapeutic effect to the target tissue without destroying or permanently damaging the target tissue. After the first treatment is concluded the application of the pulsed energy to the target tissue is halted for an interval of time. Within a single treatment session a second treatment is performed on the target tissue after the interval of time by repeatedly reapplying the pulsed energy to the target tissue so as to controllably raise the temperature of the target tissue to therapeutically treat the target tissue without destroying or permanently damaging the target tissue.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 24, 2020
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Publication number: 20200360709
    Abstract: A process that provides protective therapy for biological tissues or fluids includes applying a pulsed energy source to a target tissue or a target fluid having a chronic progressive disease or a risk of having a chronic progressive disease to therapeutically or prophylactically treat the target tissue or target fluid. A pulsed energy source having selected energy parameters may be applied to a brain of an individual who has Alzheimer's or other neurodegenerative disease or is at risk of developing such a neurodegenerative disease so as to prevent or treat the neurodegenerative disease.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 19, 2020
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang
  • Patent number: 10709607
    Abstract: A process for preventing or treating myopia includes applying a pulsed energy, such as a pulsed laser beam, to tissue of an eye having myopia or a risk of having myopia. The source of pulsed energy has energy parameters including wavelength or frequency, duty cycle and pulse train duration, which are selected so as to raise an eye tissue temperature up to eleven degrees Celsius to achieve therapeutic or prophylactic effect, such as stimulating heat shock protein activation in the eye tissue. The average temperature rise of the eye tissue over several minutes is maintained at or below a predetermined level so as not to permanently damage the eye tissue.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: July 14, 2020
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 10709608
    Abstract: A process for preventing or treating myopia includes applying a pulsed energy, such as a pulsed light beam, to tissue of an eye having myopia or a risk of having myopia. The source of pulsed energy has energy parameters including wavelength or frequency, duty cycle and pulse train duration, which are selected so as to raise an eye tissue temperature to achieve therapeutic or prophylactic effect, such as stimulating heat shock protein activation in the eye tissue. The average temperature rise of the eye tissue over several minutes is maintained at or below a predetermined level so as not to permanently damage the eye tissue.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: July 14, 2020
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 10596389
    Abstract: A process for heat treating biological tissue includes generating treatment radiation having a predetermined wavelength and average power. The treatment radiation is applied to biological tissue, such as retinal tissue, such that at least one treatment spot is formed on the biological tissue and the biological tissue is heat stimulated sufficiently to create a therapeutic effect without destroying the tissue.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: March 24, 2020
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 10531908
    Abstract: A method for heat treating biological tissues includes providing a pulsed energy source having energy parameters selected so as to raise a target temperature to a level to achieve a therapeutic effect, while the average temperature rise of the tissue over a prolonged period of time is maintained at or below a predetermined level so as not to permanently damage the target tissue. Application of the pulsed energy source to the target tissue induces a heat shock response and stimulates heat shock protein activation in the target tissue so as to therapeutically treat the target tissue.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: January 14, 2020
    Assignee: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Publication number: 20190366121
    Abstract: A process for safely providing retinal phototherapy includes generating an interferometric signal or pattern by applying a near infrared light beam to a retinal pigment epithelium of a retina of an eye. A level or concentration of melanin within the retinal pigment epithelium of the retina is compared to a normal level or concentration using the detected interferometric signal or pattern. One or more treatment parameters of the retinal phototherapy is adjusted if the level or concentration of melanin in the retinal pigment epithelium of the eye exceeds the normal level or concentration by a predetermined amount.
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Inventors: David B. Chang, Jeffrey K. Luttrull
  • Publication number: 20190328577
    Abstract: A process for preventing or treating myopia includes applying a pulsed energy, such as a pulsed light beam, to tissue of an eye having myopia or a risk of having myopia. The source of pulsed energy has energy parameters including wavelength or frequency, duty cycle and pulse train duration, which are selected so as to raise an eye tissue temperature to achieve therapeutic or prophylactic effect, such as stimulating heat shock protein activation in the eye tissue. The average temperature rise of the eye tissue over several minutes is maintained at or below a predetermined level so as not to permanently damage the eye tissue.
    Type: Application
    Filed: June 13, 2019
    Publication date: October 31, 2019
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis
  • Patent number: 10434330
    Abstract: A process for safely providing retinal phototherapy includes generating an interferometric signal or pattern by applying a near infrared light beam to a retinal pigment epithelium of a retina of an eye. A level or concentration of melanin within the retinal pigment epithelium of the retina is compared to a normal level or concentration using the detected interferometric signal or pattern. One or more treatment parameters of the retinal phototherapy is adjusted if the level or concentration of melanin in the retinal pigment epithelium of the eye exceeds the normal level or concentration by a predetermined amount.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: October 8, 2019
    Assignee: Ojai Retinal Technology, LLC
    Inventors: David B. Chang, Jeffrey K. Luttrull
  • Publication number: 20190269552
    Abstract: A process for preventing or treating myopia includes applying a pulsed energy, such as a pulsed laser beam, to tissue of an eye having myopia or a risk of having myopia. The source of pulsed energy has energy parameters including wavelength or frequency, duty cycle and pulse train duration, which are selected so as to raise an eye tissue temperature up to eleven degrees Celsius to achieve therapeutic or prophylactic effect, such as stimulating heat shock protein activation in the eye tissue. The average temperature rise of the eye tissue over several minutes is maintained at or below a predetermined level so as not to permanently damage the eye tissue.
    Type: Application
    Filed: May 21, 2019
    Publication date: September 5, 2019
    Applicant: Ojai Retinal Technology, LLC
    Inventors: Jeffrey K. Luttrull, David B. Chang, Benjamin W. L. Margolis