Patents Assigned to Alcon Laboratories
  • Sustained release ophthalmic drug dosage
    Patent number: 4271143
    Abstract: The present invention is directed to an aqueous dispersion of an ophthalmic drug and a high molecular weight polymer which forms a highly viscous gel and can be used to prolong the duration of activity of the ophthalmic drug when the gel is applied into the conjunctival sac of the eye. The ophthalmic drug-containing gel composition has prolonged retention time in the eye and remains in contact with the surface of the eye for an extended period of time.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: June 2, 1981
    Assignee: Alcon Laboratories, Inc.
    Inventors: Ronald D. Schoenwald, Robert E. Roehrs
  • Iodinated thiolcarbonates and method for use as radiographic contrast agents
    Patent number: 4125554
    Abstract: Iodinated thiolcarbonates and a method for using the same as radiographic contrast agents in connection with such X-ray techniques as myleography, lymphography, hysterosalpingography, bronchography and sialography. The general formula of such iodonated thiolcarbonate compounds may be characterized as ##STR1## wherein R represents an iodinated phenyl linked to the sulfur through a lower alkylene group consisting of a straight or branched chain having from 1 to 5 carbon atoms and R.sub.1 is a lower alkyl group consisting of a straight or branched chain having from 1 to 10 carbon atoms.
    Type: Grant
    Filed: September 23, 1977
    Date of Patent: November 14, 1978
    Assignee: Alcon Laboratories, Inc.
    Inventor: Barry N. Newton
  • Operator means for syringe cartridges
    Patent number: 4112945
    Abstract: A syringe device is disclosed which employs an operator cooperable with the plunger of a syringe cartridge to facilitate discharge of fluid from the syringe cartridge. Various embodiments of the operator each include a sleeve portion which progressively telescopes the barrel of the syringe cartridge to prevent its fracture and lend stability to the assembly during operation. The operators are cooperable with the syringe cartridge to selectively discharge one or more predetermined dosages from the syringe.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: September 12, 1978
    Assignee: Alcon Laboratories, Inc.
    Inventors: Michael L. Helixon, Barry S. Ward
  • Operator means for syringe cartridges
    Patent number: 4091812
    Abstract: A syringe device is disclosed which employs an operator cooperable with the plunger of a syringe cartridge to facilitate discharge of fluid from the syringe cartridge. Various embodiments of the operator each include a sleeve portion which progressively telescopes the barrel of the syringe cartridge to prevent its fracture and lend stability to the assembly during operation. The operators are cooperable with the syringe cartridge to selectively discharge one or more predetermined dosages from the syringe.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: May 30, 1978
    Assignee: Alcon Laboratories, Inc.
    Inventors: Michael L. Helixon, Barry S. Ward
  • Ophthalmic solution
    Patent number: 4039662
    Abstract: Ophthalmic solution suitable as an artificial tear material of low viscosity containing a polysaccharide and benzalkonium chloride.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: August 2, 1977
    Assignee: Alcon Laboratories, Inc.
    Inventors: Gerald Hecht, Charles D. Shively