Patents by Inventor Shivkumar Mahadevan

Shivkumar Mahadevan 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).

  • Publication number: 20210388142
    Abstract: Provided are amino acid based polymerizable compounds and their applications in ophthalmic devices. The amino acid based polymerizable compounds are of formula I: wherein R, R1, and R2 are as described herein.
    Type: Application
    Filed: May 11, 2021
    Publication date: December 16, 2021
    Inventors: Shivkumar Mahadevan, Dola Sinha, Yong Zhang, Ghulam Maharvi
  • Publication number: 20210318469
    Abstract: The present invention relates to ionic silicone hydrogel polymers displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.
    Type: Application
    Filed: June 16, 2021
    Publication date: October 14, 2021
    Inventors: Shivkumar Mahadevan, Zohra Fadli, Charles Scales, Thomas Maggio, Kunisi Venkatasubban, Eric R. George, James D. Ford, Carrie L. Davis, Leah Hansen, Scott L. Joslin
  • Publication number: 20210309600
    Abstract: Described are polymerizable high energy light absorbing compounds of formula I: Wherein Y, Pg, R2, R3, R4, R5, and R6 are as described herein. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.
    Type: Application
    Filed: May 27, 2021
    Publication date: October 7, 2021
    Inventors: Ghulam Maharvi, Shivkumar Mahadevan, Stephen C. Arnold, Patricia Martin, Leilani K. Sonoda, Dola Sinha
  • Publication number: 20210301088
    Abstract: Described are ophthalmic devices and methods for their preparation and use. The ophthalmic device comprises at least one heterocyclic ligand complexed with a transition metal, wherein the ophthalmic device is a polymerization reaction product of a reactive mixture comprising: (a) one or more monomers suitable for making the ophthalmic device; and (b) a heterocyclic ligand-containing monomer, and wherein the ophthalmic device has a transmittance at 400 nm of 90 percent or less.
    Type: Application
    Filed: February 8, 2021
    Publication date: September 30, 2021
    Inventors: Stephen C. Pegram, Dola Sinha, Shivkumar Mahadevan
  • Publication number: 20210261712
    Abstract: Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a
    Type: Application
    Filed: April 28, 2021
    Publication date: August 26, 2021
    Inventors: Brian Aitken, Charles Scales, Scott Joslin, Yong Zhang, Dola Sinha, Shivkumar Mahadevan, Patricia Martin, Fang Lu, Donnie Duis, Stephen C. Arnold
  • Patent number: 11067720
    Abstract: The present invention relates to ionic silicone hydrogel polymers displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: July 20, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Shivkumar Mahadevan, Zohra Fadli, Charles Scales, Thomas Maggio, Kunisi Venkatasubban, Eric R. George, James D. Ford, Carrie L. Davis, Leah Hansen, Scott L. Joslin
  • Patent number: 11046636
    Abstract: Described are polymerizable high energy light absorbing compounds of formula I: Wherein Y, Pg, R1, R2, R3, R4, R5, and R6 are as described herein. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: June 29, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Ghulam Maharvi, Shivkumar Mahadevan, Stephen C. Arnold, Patricia Martin, Leilani K. Sonoda, Dola Sinha
  • Publication number: 20210190992
    Abstract: Provided is a contact lens system that comprises: a contact lens containing a photosensitive chromophore and a package surrounding the contact lens. The photosensitive chromophore has at least one active wavelength between 250 and 400 nanometers and at least one active wavelength between 400 and 450 nanometers. The package has a transmittance of no more than 99 percent at each active wavelength.
    Type: Application
    Filed: November 19, 2020
    Publication date: June 24, 2021
    Inventors: Patricia Martin, Shivkumar Mahadevan
  • Publication number: 20210179766
    Abstract: Provided are ophthalmic devices comprised of a reaction product of a composition comprising: (i) a crosslinked substrate network containing covalently bound activatable free radical initiators; and (ii) a grafting composition containing one or more ethylenically unsaturated compounds. Also provided are processes for making ophthalmic devices.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Brian Aitken, Charles Scales, Scott Joslin, Yong Zhang, Dola Sinha, Shivkumar Mahadevan, Patricia Martin, Fang Lu, Donnie Duis, Stephen C. Arnold
  • Patent number: 11021558
    Abstract: Provided are polymer compositions made by a process comprising: (a) providing a first reactive composition containing: (i) a polymerization initiator that is capable, upon a first activation, of forming two or more free radical groups, at least one of which is further activatable by subsequent activation; (ii) one or more ethylenically unsaturated compounds; and (iii) a crosslinker; (b) subjecting the first reactive composition to a first activation step such that the first reactive composition polymerizes therein to form a crosslinked substrate network containing a covalently bound activatable free radical initiator, (c) combining the crosslinked substrate network with a second reactive composition containing one or more ethylenically unsaturated compounds; and (d) activating the covalently bound activatable free radical initiator of the crosslinked substrate network such that the second reactive composition polymerizes therein with the crosslinked substrate network to form a grafted polymeric network and a
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 1, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Brian Aitken, Charles Scales, Scott Joslin, Yong Zhang, Dola Sinha, Shivkumar Mahadevan, Patricia Martin, Fang Lu, Donnie Duis, Stephen C. Arnold
  • Publication number: 20210109255
    Abstract: Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.
    Type: Application
    Filed: December 3, 2020
    Publication date: April 15, 2021
    Inventors: Shivkumar Mahadevan, Dawn D. Wright
  • Patent number: 10975040
    Abstract: Described are high energy light blocking compounds and ophthalmic devices containing the compounds. In particular, described are hydroxyphenyl naphthotriazole structures with polymerizable functionality that block high energy light and are visibly transparent. The hydroxyphenyl naphthotriazole structures can be incorporated into ophthalmic devices, such as hydrogel contact lenses, to protect eyes from high energy light radiation.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: April 13, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Shivkumar Mahadevan, Leilani K. Sonoda, Dola Sinha, Patricia Martin
  • Patent number: 10961341
    Abstract: Provided are ophthalmic devices comprised of a reaction product of a composition comprising: (i) a crosslinked substrate network containing covalently bound activatable free radical initiators; and (ii) a grafting composition containing one or more ethylenically unsaturated compounds. Also provided are processes for making ophthalmic devices.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: March 30, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Brian Aitken, Charles Scales, Scott Joslin, Yong Zhang, Dola Sinha, Shivkumar Mahadevan, Patricia Martin, Fang Lu, Donnie Duis, Stephen C. Arnold
  • Publication number: 20210061934
    Abstract: Described are contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving one or more vision attributes.
    Type: Application
    Filed: July 24, 2020
    Publication date: March 4, 2021
    Inventors: Patricia Martin, John R. Buch, Jessica Cannon, Shivkumar Mahadevan, Dawn D. Wright
  • Publication number: 20210063770
    Abstract: Described are multifocal contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving one or more vision attributes.
    Type: Application
    Filed: July 24, 2020
    Publication date: March 4, 2021
    Inventors: Shivkumar Mahadevan, Dawn D. Wright, Ronald J. Clark, Thomas R. Karkkainen, Derek Nankivil
  • Patent number: 10935695
    Abstract: Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: March 2, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Shivkumar Mahadevan, Dawn D. Wright
  • Publication number: 20210016527
    Abstract: The present invention relates to a method of manufacturing a contact lens including the steps of: (i) adding reactive components to a mold, wherein the reactive components comprise (a) at least one hydroxy-containing silicone component having a weight average molecular weight from about 200 to about 15,000 g/mole and (b) at least one mono-ether terminated, mono-methacrylate terminated polyethylene glycol having a weight average molecular weight from about 200 to about 10,000 g/mole; (ii) curing the reactive components within the mold to form the contact lens; and (iii) removing the contact lens from said mold.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Inventors: Azaam Alli, Shivkumar Mahadevan
  • Publication number: 20200407324
    Abstract: Described are polymerizable fused tricyclic compounds of formula I: wherein R1, R2, R3, m, n, t, and rings B, C, and D are as defined herein. The compounds absorb various wavelengths of ultraviolet and/or visible light (such as high energy visible light) and are suitable for incorporation in a variety of products, such as biomedical devices and ophthalmic devices.
    Type: Application
    Filed: May 26, 2020
    Publication date: December 31, 2020
    Inventors: Shivkumar Mahadevan, Dawn D. Wright
  • Publication number: 20200407337
    Abstract: Described are visible light absorbing compounds. The compounds have a visible light absorption maximum between 430 and 480 nm and a full width half maximum (FWHM) at the visible light absorption maximum of at least 35 nm and up to 100 nanometers, wherein the compounds are photostable. The compounds substantially mimic the visible light absorbance properties of macular pigment while remaining photostable. The compounds may be used in a variety of articles, including ophthalmic devices.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 31, 2020
    Inventor: Shivkumar Mahadevan
  • Patent number: 10792874
    Abstract: The present invention relates to a method of manufacturing a contact lens including the steps of: (i) adding reactive components to a mold, wherein the reactive components comprise (a) at least one hydroxy-containing silicone component having a weight average molecular weight from about 200 to about 15,000 g/mole and (b) at least one mono-ether terminated, mono-methacrylate terminated polyethylene glycol having a weight average molecular weight from about 200 to about 10,000 g/mole; (ii) curing the reactive components within the mold to form the contact lens; and (iii) removing the contact lens from said mold.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: October 6, 2020
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Azaam Alli, Shivkumar Mahadevan