Patents Represented by Attorney Craig E. Larson

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  • Process for making silicone containing hydrogel lenses
    Patent number: 5260000
    Abstract: A process for preparing silicone hydrogel contact lenses where machining operations are employed to produce a lens having a desired final shape. The silicone hydrogel contact lenses are prepared by:providing a monomeric mixture comprising a silicone-containing monomer, a hydrophilic monomer and an organic diluent;charging the mixture to a mold and curing the formulation in the mold to obtain a shaped article;removing organic diluent from the shaped article to improve machineability of the article; andmachining the shaped article to obtain a contact lens having a desired configuration.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: November 9, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: Mahendra P. Nandu, Rajan S. Bawa, Yu-Chin Lai
  • Method of cleaning laser ablation debris
    Patent number: 5257706
    Abstract: A method is disclosed for ablating a target surface and cleaning an ablated target surface resulting in the reduction of ablation debris accumulation.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: November 2, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventor: Kevin J. McIntyre
  • Method for shaping contact lens surfaces
    Patent number: 5256853
    Abstract: A method for shaping the surface of an optical target, said method comprising the steps of: addressing a ring of laser radiation to the surface of the optical target domain, said laser radiation being of sufficient fluency and energy to photoablate the material forming the body of said optical target domain, sweeping the optically functional portion of said target domain with said laser ring by effectively changing the radius of said ring in a prescribed fashion within the range of the radius of the optical target domain and zero.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: October 26, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventor: Kevin J. McIntyre
  • One and two dimensional target domain profiling of target optical surfaces using excimer laser photoablation
    Patent number: 5240553
    Abstract: A method for modifying a target optical surface which comprises the steps of providing a target optical surface to an apparatus capable of indexing the position of said target to the beam path of a laser capable of photoablating the material of said target, passing said target through the domain of said laser along at least one axis, rotating said target optical surface or said energy beam along said axis x relative to said optical surface and controlling the product of the intensity of said laser with time in order to control the amount of ablation of said target.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: August 31, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventor: William F. Jones
  • Surface modification of polymer objects
    Patent number: 5219965
    Abstract: A method of modifying the surfaces of polymeric objects by adding a polymerizable surfactant to the monomer mix used to form the object. Also disclosed are surface-modified objects prepared by this method, which is particularly suited for modifying the surfaces of contact lenses.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: June 15, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: Paul L. Valint, Jr., Joseph A. McGee, Yu-Chin Lai
  • Automatic power change mechanism for riflescopes or the like
    Patent number: 5194987
    Abstract: A power change mechanism for variable power riflescopes includes a resilient member disposed between the riflescope housing and the power change ring for automatically rotating the power change ring from one power setting to another upon activation of a latch mechanism. The automatic power change mechanism may include apparatus for overriding such automatic capabilities in order to provide for manual power change.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: March 16, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: Sidney D. Moore, Hans A. Jorgensen
  • Surface-active macromonomers
    Patent number: 5177165
    Abstract: A new class of polymerizable surfactants, useful for modifying the surfaces of polymeric objects, which are described by the formula:DC[A.sub.x B.sub.y ]wherein A is at least one ethylenically unsaturated hydrophilic monomer, B is at least one ethylenically unsaturated hydrophobic monomer, C is a functional chain transfer agent, D is an ethylenically unsaturated end group, y is within the range from about 0.1 to about 0.9, and x+y=1. Also disclosed are random copolymer precursors of such polymerizable surfactants.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: January 5, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: Paul L. Valint, Jr., Joseph A. McGee
  • Method of molding shaped polymeric articles
    Patent number: 5158717
    Abstract: When molding shaped articles such as contact lenses from monomeric mixtures containing silicone monomers and hydrophilic monomers, the wettability of the resulting article is improved by using a mold material produced from a resin comprising a copolymer of an alpha, beta, olefinically saturated mononitrile and at least one comonomer to enhance melt processability.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: October 27, 1992
    Assignee: Bausch & Lomb Incorporated
    Inventor: Yu-Chin Lai
  • Methane conversion process
    Patent number: 5146027
    Abstract: A method for converting methane to higher hydrocarbon products and coproduct water wherein a gas comprising methane and a gaseous oxidant are contacted with a nonacidic catalyst at temperatures within the range of about 700.degree. to 1200.degree. C. in the presence of a halogen promoter, the contacting being conducted in the substantial absence of alkali metals or compounds thereof.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: September 8, 1992
    Assignees: Atlantic Richfield Co., Phillips Petroleum Co.
    Inventor: Anne M. Gaffney
  • Ophthalmic article
    Patent number: 5137728
    Abstract: An ocular insert for insertion into the cul de sac of the eye which is a substantially circular disc having a concave posterior surface and a convex anterior surface with a radius of curvature less than that of the sclera and a center thickness of less than about 1.5 mm.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: August 11, 1992
    Assignee: Bausch & Lomb Incorporated
    Inventor: Rajan Bawa
  • Surface coating of polymer objects
    Patent number: 5135297
    Abstract: A method of modifying surfaces of polymeric objects which comprises immersing the polymeric object in an aqueous dispersion of a polymerizable surfactant, a cross-linking agent, and a free radical initiator and exposing the immersant to ultraviolet light to form a permanent, cross-linked surface coating on the object. Also disclosed are coated objects prepared by this method, which is particularly suited for coating contact lenses.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: August 4, 1992
    Assignee: Bausch & Lomb Incorporated
    Inventor: Paul L. Valint, Jr.
  • Control of hard segment size in polyurethane formation
    Patent number: 5128434
    Abstract: Improved methods for forming urethane elastomers and corresponding urethane prepolymers are disclosed wherein diisocyanate and a low molecular weight diol are simultaneously mixed and reacted to form a hard segment which is subsequently reacted with a long chain diol to form the elastomer. Aliphatic diisocyanates are particularly desirable for the manufacture of contact lenses from the urethane prepolymers of this invention.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: July 7, 1992
    Assignee: Bausch & Lomb Incorporated
    Inventor: Yu-Chin Lai
  • Methane conversion process
    Patent number: 5093542
    Abstract: A method for converting methane to higher hydrocarbon products and coproduct water wherein a gas comprising methane and a gaseous oxidant are contacted with a nonacidic catalyst at temperatures within the range of about 700.degree. to 1200.degree. C. in the presence of a halogen promoter, the contacting being conducted in the substantial absence of alkali metals or compounds thereof.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: March 3, 1992
    Assignee: Atlantic Richfield Company
    Inventor: Anne M. Gaffney
  • Soft contact lens processing aid
    Patent number: 5079878
    Abstract: A method for polishing hydrophilic contact lenses which comprises applying a polish consisting of a substantially water free material that in solution acts as a surfactant and an optional abrasive material to the lens surface to be polished and applying a moving polishing tool to the lens.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: January 14, 1992
    Assignee: Bausch & Lomb Incorporated
    Inventors: Robert J. Druskis, Rose A. Milne
  • Novel vinyl carbonate and vinyl carbamate contact lens material monomers
    Patent number: 5070215
    Abstract: Novel monomers of the general formula ##STR1## where b is 0 or 1, a is 1, 2, 3 or 4, R.sup.2 is a monovalent alkyl radical and R is an organic radical. The novel monomers may be employed to produce novel copolymers useful as hydrogel, soft non-hydrogel and/or rigid gas permeable contact lens materials.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: December 3, 1991
    Assignee: Bausch & Lomb Incorporated
    Inventors: Ronald E. Bambury, David E. Seelye
  • Laser polishing of lens surface
    Patent number: 5068514
    Abstract: A process for polishing a contact lens surface with a laser beam without substantial ablative photodecomposition and with the fluence of the laser beam being less than 0.3JCM.sup.-2 and the number of applied pulses greater than 200.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: November 26, 1991
    Assignee: Bausch & Lomb Incorporated
    Inventor: James G. Lunney
  • Polymerizable dye
    Patent number: 5055602
    Abstract: Dye monomers of the general chemical formula ##STR1## where X denotes an unsaturated polymerizable organic radical; andR is an organic diradical with 2 to 12 carbon atoms.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: October 8, 1991
    Assignee: Bausch & Lomb Incorporated
    Inventor: John B. Melpolder
  • Swivel mount for a telescope
    Patent number: D332458
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: January 12, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventor: Sidney D. Moore
  • Telescope
    Patent number: D334393
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: March 30, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventor: Sidney D. Moore
  • Adjustable hand strap for use with binoculars
    Patent number: D338339
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: August 17, 1993
    Assignee: Bausch & Lomb Incorporated
    Inventors: Glenda G. Anderson, Claus O. Huckenbeck