Patents by Inventor Olin W. Calvin

Olin W. Calvin 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: 6610220
    Abstract: This invention provides a method of manufacturing a contact lens comprising the step of: dosing a contact lens mold comprising optical mold surfaces with an oxygen-sensitive reaction mixture, wherein said optical surfaces of said contact lens mold have between from 0.13×10−9 to 2.6×10−9 moles/cm2 O2 available to interfere with the reaction of said reaction mixture. This invention further provides a method of manufacturing a contact lens comprising the steps of: dosing a contact lens mold comprising optical mold surfaces with a reaction mixture, and sealing said reaction mixture and said optical mold surfaces away from a gaseous environment, wherein said optical surfaces of said contact lens mold were exposed to said gaseous environment comprising greater than 0.5 percent oxygen just prior to said sealing step.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: August 26, 2003
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Jeffrey D. Caltrider, Joseph W. Ricard, Terry L. Spaulding, Jeffrey E. Steven, Olin W. Calvin, John B. Enns, Ture Kindt-Larsen
  • Patent number: 6241918
    Abstract: A method of casting polymer contact lenses between two mold halves in an ambient (air) environment containing molecular oxygen (O2) in which the mold halves forming the cast geometry are exposed to the environment where the air exposure time, the time between which the injection mold used to form the mold halves is opened until the mold halves are assembled is less than 70 seconds, more preferably 40 seconds or less, and most preferably 24 seconds or less.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: June 5, 2001
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Olin W. Calvin, John B. Enns, Ture Kindt-Larsen
  • Patent number: 6071112
    Abstract: An automated means for hydrating and packaging a molded hydrophilic contact lens in one of the mold parts used to mold the lens is provided in which a first robotic assembly removes a plurality of contact lens molds from a production line carrier, each of the lens molds having a contact lens adhered therein. The first robotic assembly transports the molds to a first staging area where the lens molds are sandwiched between a lens mold carrier and a top chamber plate to form a first hydration carrier. The hydration carrier is then transported through a plurality of flushing or extraction stations wherein fresh deionized water is introduced into the hydration chambers at each hydration station to flush leachable substances from the hydration chamber. At each flushing station, fresh deionized water is introduced into the hydration chamber to remove previously extracted impurities and the products of hydrolysis.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: June 6, 2000
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Olin W. Calvin, Mark E. Schlagel, Darren S. Keene, Ture Kindt-Larsen, Craig W. Walker, Wallace A. Martin, John C. Heaton
  • Patent number: 6012471
    Abstract: An automated means for hydrating and packaging a molded hydrophilic contact lens in one of the mold parts used to mold the lens is provided in which a first robotic assembly removes a plurality of contact lens molds from a production line carrier, each of the lens molds having a contact lens adhered therein. The first robotic assembly transports the molds to a first staging area where the lens molds are sandwiched between a lens mold carrier and a top chamber plate to form a first hydration carrier. The hydration carrier is then transported through a plurality of flushing or extraction stations wherein fresh deionized water is introduced into the hydration chambers at each hydration station to flush leachable substances from the hydration chamber. At each flushing station, fresh deionized water is introduced into the hydration chamber to remove previously extracted impurities and the products of hydrolysis.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: January 11, 2000
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Olin W. Calvin, Mark E. Schlagel, Darren S. Keene, Ture Kindt-Larsen, Craig W. Walker, Wallace A. Martin, John C. Heaton
  • Patent number: 5616184
    Abstract: An apparatus and a method for removing a liquid from a container having a bowl and a flange, the bowl holding the liquid and containing a hydrophilic ophthalmic lens, wherein there is provided a nozzle with a central face and a shoulder around the periphery of the face. The shoulder has a sealing means which is sized to fit on the flange of the container, where it forms a sealed volume above the container bowl, this volume including the volume of the bowl itself. The central face has through it at lease one fluid entrance passage and at least one fluid exit passage arranged so that the flow is distributed substantially symmetric about the center axis of the lens. The apparatus includes a lens retainer which resiliently urges the lens into engagement with the bowl so that when the purging fluid is introduced into the sealed volume, there is no migration of the lens.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: April 1, 1997
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Gregory S. Duncan, Olin W. Calvin, Mark E. Schlagel, Darren S. Keene, Russell J. Edwards
  • Patent number: 5417557
    Abstract: Described is an apparatus and method for removing a molded ophthalmic lens from between the mold portions in which it is produced. A source of intense electromagnetic radiation, preferably a carbon dioxide (CO.sub.2) laser of about 80 Watts at a wavelength of 10.6 .mu.m, is applied to at least one of the mold portions. The exposure of the mold portion to the laser is between one half and one second. Differential expansion of the heated mold polymer relative to the cooler polymer shifts one surface with respect to the other, and the shear force breaks the polymerized lens/polymer mold adhesion and assists in the separation of mold portions. The greater the temperature gradient between the surfaces of the mold portions, the greater the shearing force and the easier the mold portions separate. The heated back mold portion is promptly removed so that very little energy is transferred to the polymer lens, avoiding the possibility of thermal decomposition of the lens.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: May 23, 1995
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Denwood F. Ross, Craig W. Walker, Olin W. Calvin, Thomas G. Davis
  • Patent number: 5294379
    Abstract: An apparatus and method for removing a molded ophthalmic lens from between the mold portions in which it is produced. A source of intense electromagnetic radiation, preferably a carbon dioxide (CO.sub.2) laser of about 80 Watts at a wavelength of 10.6 .mu.m, is applied to at least one of the mold portions. The exposure of the mold portion to the laser is between one half and one second. Differential expansion of the heated mold polymer relative to the cooler polymer shifts one surface with respect to the other, and the shear force breaks the polymerized lens polymer mold adhesion and assists in the separation of mold portions. The greater the temperature gradient between the surfaces of the mold portions, the greater the shearing force and the easier the mold portions separate. The heated back mold portion is promptly removed so that very little energy is transferred to the polymer lens, avoiding the possibility of thermal decomposition of the lens.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: March 15, 1994
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Denwood F. Ross, Craig W. Walker, Olin W. Calvin, Thomas G. Davis