Patents by Inventor Namassivaya Doddi

Namassivaya Doddi 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).

  • Vinylsilylalkoxy arylbenzotriazole compounds and UV absorbing compositions made therefrom
    Patent number: 4803254
    Abstract: Vinylsilylalkoxy arylbenzotriazol monomers such as 2-[3'-t-butyl-5'-(3-"-dimethylvinylsilylpropoxy)-2'-hydroxy-phenyl]-5-meth oxybenzotriazole are disclosed. These monomers can be incorporated in optically clear silicone polymers to form intraocular lenses, contact lenses, and the like, which have UV absorbing properties.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: February 7, 1989
    Assignee: Iolab Corporation
    Inventors: Gary B. Dunks, Akira Yamada, Namassivaya Doddi, Charles D. Beard
  • Ultraviolet absorbing polymers comprising 2-(2'-hydroxy-5'-acryloyloxyalkoxyphenyl)-2H-benzotriazole
    Patent number: 4716234
    Abstract: Ultraviolet light absorbing compositions comprising 2-(2'-hydroxy-5'-acryloyloxyalkoxyphenyl(-2H-benzotrizoles, and copolymers thereof with one or more other monomers copolyermizable therewith, particularly acrylic monomers, are useful in the manufacture of ocular devices, particularly intraocular lenses and contact lenses.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: December 29, 1987
    Assignee: Iolab Corporation
    Inventors: Gary B. Dunks, Akira Yamada, Charles D. Beard, Namassivaya Doddi
  • 2'-hydroxy-5'-(hydroxyalkyl)phenyl-2H-benzotriazoles
    Patent number: 4611061
    Abstract: The compounds 2'-hydroxy-5'-(hydroxyalkyl)phenyl-2H-benzotriazoles are useful as intermediate alcohols in the preparation of corresponding 2'-hydroxy-5'-acrylyloxyphenyl-2H-benzotriazole monomers, which in turn are copolymerizable with ethylenically unsaturated monomers, particularly acrylic monomers, to impart ultraviolet absorbing properties to the resulting copolymers.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: September 9, 1986
    Assignee: Iolab Corporation
    Inventors: Charles D. Beard, Namassivaya Doddi, Akira Yamada
  • Ultraviolet absorbing polymers comprising 2-hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles
    Patent number: 4528311
    Abstract: Ultraviolet light absorbing polymer compositions comprising copolymers of 2-Hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles with one or more other monomers copolymerizable therewith, particularly acrylic monomers are useful in the manufacture of occular devices, particularly intraoccular lenses and contact lenses. Polymers of the disclosed benzotriazoles may be added to other organic materials to impart ultraviolet absorbing properties thereo.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: July 9, 1985
    Assignee: Iolab Corporation
    Inventors: Charles D. Beard, Akira Yamada, Namassivaya Doddi
  • Synthetic absorbable hemostatic agent
    Patent number: 4443430
    Abstract: A synthetic absorbable hemostatic agent for use in the control of osseous hemorrhage, comprising a copolymer of lactide and glycolide containing from about 30% to 70% lactide on a molar basis, and having a molecular weight such that it possesses a putty-like consistency at room temperature. The preferred agent has a lactide/glycolide molar ratio of 65:35 and a molecular weight of between 2000 and 2500 Dalton. The agent may also be mixed with a biocompatible base.
    Type: Grant
    Filed: November 16, 1982
    Date of Patent: April 17, 1984
    Assignee: Ethicon, Inc.
    Inventors: Frank V. Mattei, Namassivaya Doddi
  • Synthetic absorbable hemostatic composition
    Patent number: 4440789
    Abstract: A synthetic absorbable hemostatic composition for use in the control of osseous hemorrhage, comprising polydioxanone in a biocompatible base, the polydioxanone having a sufficiently low inherent viscosity such that the composition possesses a putty-like consistency at room temperature. The preferred composition is one in which the polydioxanone comprises between 65% and 75% by weight of the composition.
    Type: Grant
    Filed: November 16, 1982
    Date of Patent: April 3, 1984
    Assignee: Ethicon, Inc.
    Inventors: Frank V. Mattei, Namassivaya Doddi
  • Absorbable hemostatic composition
    Patent number: 4439420
    Abstract: An absorbable hemostatic composition for use in the control of osseous hemorrhage, comprising a biocompatible fatty acid salt in a biocompatible base, said composition having a putty-like consistency at room temperature. The preferred composition is one in which the fatty acid salt is calcium stearate.
    Type: Grant
    Filed: November 16, 1982
    Date of Patent: March 27, 1984
    Assignee: Ethicon, Inc.
    Inventors: Frank V. Mattei, Martin Stephenson, Allin K. Gordon, Namassivaya Doddi
  • Non-metallic, bio-compatible hemostatic clips
    Patent number: 4418694
    Abstract: Non-metallic, bio-compatible hemostatic clips of absorbable or nonabsorbable materials are formed by two legs joined with a resilient hinge. One leg terminates in a hook member which secures the other leg when the clip is closed. The clip applier is a forceps-type instrument having channeled jaws especially adapted to receive and close the clip.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: December 6, 1983
    Assignee: Ethicon, Inc.
    Inventors: Howard Beroff, Namassivaya Doddi, Stephen J. Jewusiak
  • Mesh-covered bolus
    Patent number: 4326522
    Abstract: A bolus for administering medicament containing the medicament in a bio-erodible polymer having a shape or size so that it is retained in the rumen for at least two weeks, having a fine mesh completely encasing the bolus, which can contain a heavy metal core to give it weight, or can be in two segments connected by a spring, or a flexible polyurethane band, which changes position after being administered to the animal.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: April 27, 1982
    Assignee: Pitman-Moore, Inc.
    Inventors: Jorge Guerrero, Alice D. Mellon, Charles G. Fritz, Namassivaya Doddi
  • Synthetic absorbable surgical devices of poly-dioxanone
    Patent number: 4052988
    Abstract: Synthetic absorbable sutures and other surgical devices are prepared from polymers of p-dioxanone and 1,4-dioxepan-2-one, and alkyl substituted derivatives thereof. Monofilament sutures of oriented fibers are characterized by good tensile and knot strength and a high level of flexibility and softness. The sutures have good in vivo strength retention and are slowly absorbed without significant tissue reaction.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: October 11, 1977
    Assignee: Ethicon, Inc.
    Inventors: Namassivaya Doddi, Charles C. Versfelt, David Wasserman
  • Absorbable hemostatic composition
    Patent number: RE32208
    Abstract: An absorbable hemostatic composition for use in the control of osseous hemorrhage, comprising a biocompatible fatty acid salt in a biocompatible base, said composition having a putty-like consistency at room temperature. The preferred composition is one in which the fatty acid salt is calcium stearate.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: July 15, 1986
    Assignee: Ethicon, Inc.
    Inventors: Frank V. Mattei, Martin Stephenson, Allin K. Gordon, Namassivaya Doddi