Patents by Inventor Dola Sinha

Dola Sinha 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: 20220035178
    Abstract: A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form. The tear lens follows or assumes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provide an optical element for correction of refractive error.
    Type: Application
    Filed: October 19, 2021
    Publication date: February 3, 2022
    Inventors: Azaam Alli, Dola Sinha
  • Publication number: 20210388141
    Abstract: Provided are imidazolium zwitterion polymerizable compounds and their applications in ophthalmic devices and packaging solutions. The zwitterionic polymerizable compounds are of formula I: wherein R1, R2, R3, L1, L2, and Rg are as described herein.
    Type: Application
    Filed: May 11, 2021
    Publication date: December 16, 2021
    Inventors: Shivkumar Mahadevan, Dola Sinha, Yong Zhang
  • 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: 20210382203
    Abstract: The present invention relates to silicone hydrogels exhibiting desired combinations of physical and mechanical properties, formed from a reactive monomer mixture comprising at least one N-alkyl methacrylamide, and at least one silicone-containing component. These silicone hydrogels may also contain hydrophilic components, crosslinking agents and toughening monomers. These silicone hydrogels are useful in preparing biomedical devices, ophthalmic lenses, and contact lenses.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 9, 2021
    Inventors: Azaam Alli, Dola Sinha
  • Patent number: 11187920
    Abstract: A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form. The tear lens follows or assumes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provide an optical element for correction of refractive error.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: November 30, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Azaam Alli, Dola Sinha
  • 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
  • Patent number: 11125916
    Abstract: The present invention relates to silicone hydrogels exhibiting desired combinations of physical and mechanical properties, formed from a reactive monomer mixture comprising at least one N-alkyl methacrylamide, and at least one silicone-containing component. These silicone hydrogels may also contain hydrophilic components, crosslinking agents and toughening monomers. These silicone hydrogels are useful in preparing biomedical devices, ophthalmic lenses, and contact lenses.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: September 21, 2021
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Azaam Alli, Dola Sinha
  • 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: 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: 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
  • 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
  • Patent number: 10752720
    Abstract: Described are high energy light blocking compounds and ophthalmic devices containing the compounds. In particular, described are hydroxybiphenyl benzotriazole structures with polymerizable functionality that block high energy light and are visibly transparent. The hydroxybiphenyl benzotriazole structures can be incorporated into ophthalmic devices, such as hydrogel contact lenses, to protect eyes from high energy light radiation.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: August 25, 2020
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Shivkumar Mahadevan, Leilani K. Sonoda, Dola Sinha, Patricia Martin
  • Patent number: 10723732
    Abstract: Described are high energy light blocking compounds and ophthalmic devices containing the compounds. In particular, described are hydroxyphenyl phenanthroline structures with polymerizable functionality that block high energy light and are visibly transparent. The hydroxyphenyl phenanthroline structures can be incorporated into ophthalmic devices, such as hydrogel contact lenses, to protect eyes from high energy light radiation.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: July 28, 2020
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Shivkumar Mahadevan, Leilani K. Sonoda, Dola Sinha, Patricia Martin
  • Publication number: 20200183186
    Abstract: A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form. The tear lens follows or assumes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provide an optical element for correction of refractive error.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 11, 2020
    Inventors: Azaam Alli, Dola Sinha
  • Patent number: 10620456
    Abstract: A molded contact lens comprising a stiffer optic zone relative to the peripheral zone of the contact lens provides an optical element for correcting astigmatism without the need for or substantially minimizing the need for the correction of rotational misalignment. The higher elastic modulus optic zone vaults over the cornea thereby allowing a tear lens to form. The tear lens follows or assumes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provide an optical element for correction of refractive error.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 14, 2020
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Azaam Alli, Dola Sinha
  • Publication number: 20200079743
    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: Application
    Filed: November 15, 2019
    Publication date: March 12, 2020
    Inventors: Shivkumar Mahadevan, Leilani K. Sonoda, Dola Sinha, Patricia Martin
  • Patent number: 10526296
    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: May 15, 2018
    Date of Patent: January 7, 2020
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Shivkumar Mahadevan, Leilani K. Sonoda, Dola Sinha, Patricia Martin