Patents by Inventor Charles W. Neefe

Charles W. Neefe 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: 5129587
    Abstract: The invention is a method of making STYROFOAM fluff from STYROFOAM. The fluff particles are torn away from the STYROFOAM by a rapidly rotating router blade. The pulling away of small pieces from the STYROFOAM provides an increased volume to the fluff.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: July 14, 1992
    Inventor: Charles W. Neefe
  • Patent number: 5106182
    Abstract: The invention is a method of printing a replica of the natural iris on a contact lens. The printing is done using a rubber printing member having up raised rubber radial segments having a radius of substantially the same as the contact lens. The printing ink is applied to the radial printing segments and the rubber stamp is applied to the lens. Pressure is then applied to the rubber stamp forcing the edges of the radial printing segments to move outward moving an amount of printing ink ahead of the advancing edge. The lens is rotated and the process is repeated forming a geometric pattern resembling the human iris.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: April 21, 1992
    Inventors: Charles R. Briggs, Charles W. Neefe, Barbara Smith
  • Patent number: 5100603
    Abstract: Multimaterial containers are composed of layers of different materials. Plastic containers are each composed of single resin material. These containers may be granulated and mixed together, heated and moulded, to form new and useful objects. The containers with residue inside and labels outside are granulated to form a material resembling multicolored sawdust. A small amount of sugar is added and the mixture is placed in a mould. Heat is applied to caramelize the sugar and melt the granulated plastic encasing the multilayer particles within the plastic melt. Pressure is applied to remove air from the mould cavity. The mould and contents are cooled and the useful object removed from the mould.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 31, 1992
    Inventor: Charles W. Neefe
  • Patent number: 5066431
    Abstract: The invention relates to a method of spin casting lenses having optical surfaces which may be spherical, aspherical or toric in shape. The method provides a concave optical mold having a spherical, aspherical or toric optical surface. A convex optical mold having a spherical, aspherical or toric surface is also privided. A selected liquid lens monomer with a selected catalyst is placed in the concave lens mold. The convex optical mold is positioned in the concave mold displacing the liquid lens monomer. The optical axis of the concave and convex molds are aligned and the two molds rotated about their concurrent optical axis. The liquid monomer is allowed to polymerize forming a solid polymer lens. The finished lens is then removed from the molds.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: November 19, 1991
    Inventors: Charles R. Briggs, Charles W. Neefe
  • Patent number: 5055350
    Abstract: A railroad cross-tie made from sand and recycled thermoplastic containers. To practice the invention the containers made of many thermoplastic materials are granulated and mixed together. The labels and small amounts of residue from the original contents remain on the containers. Sand is dried and coated with an adhesive substance. The coated sand and recycled granulated thermoplastic plastics are mixed and heated in a compression mold to form the railroad cross-tie.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: October 8, 1991
    Inventor: Charles W. Neefe
  • Patent number: 5041250
    Abstract: A method of making useful objects by coating grains of sand with a thin film of styrene. The styrene coating is made by making styrofoam into styrofoam fluff by providing a plurality of tearing members around a cylinder. Rotating the cylinder and tearing members and subjecting the surface of the styrofoam to the rotating tearing members. The moving tearing members rupture the styrofoam surface and tear away pieces of the styrofoam, forming styrofoam fluff. The fluff has a sectional density less than the styrofoam from which the styrofoam fluff was made. The styrofoam fluff is mixed with sand, the mixture heated, the styrofoam fluff melts and forms a coating on the sand particles.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: August 20, 1991
    Inventor: Charles W. Neefe
  • Patent number: 5011633
    Abstract: The invention is a method of metering liquid lens monomer on to the surface of a concave spin casting mold. This is done by an atomized liquid spray applied to the mold optical surface for a precise time. An inert gas such as nitrogen is used to propel the atomized spray from the spray nozzle to the optical mold surface. The atomized spray wets the optical surface evenly reducing the contact angle to the receding angle. The duration of the spray can be precisely timed by an electronic timer valve. The volume of monomer deposited can be precisely controlled therefore the lens thickness is precisely controlled.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: April 30, 1991
    Assignee: Sunsoft Lenses
    Inventor: Charles W. Neefe
  • Patent number: 4997609
    Abstract: A method of making useful objects by coating grains of sand with a thin film of sugar. Preparing a polymer mix of granulated plastic containers. Mixing the coated sand with the granulated plastic and placing the sand, resin mix in a mould and heating to 160.degree. C. to 300.degree. C. Applying sufficient pressure to force the air from the mould allowing the hot resin liquid to bond to the coated surface of the grains of sand. The mould and contents are cooled and the useful object removed.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: March 5, 1991
    Inventor: Charles W. Neefe
  • Patent number: 4971433
    Abstract: The invention discloses a method of making a soft contact lens that will change the appearance of a dark brown eye to a light blue or green. The lens is made by dying the iris area of the convex (front lens surface) the desired transparent color. A white, light reflecting compound is precipitated in the iris area of the concave lens surface. The lens is placed on the cornea of a dark colored eye and the light colored concave (back lens surface) is viewed through the transparent dyed colored convex surface providing an apparent new color to the eye.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: November 20, 1990
    Assignee: Sunsoft Corp.
    Inventor: Charles W. Neefe
  • Patent number: 4903052
    Abstract: The invention is a method of making a cosmetic contact lens that changes the apparent color of the eye. This is accomplished by dying the iris area of the convex lens surface the desired transparent color. The convex surface is expanded by a swelling agent. The swelling agent increases the pore size allowing the precipitating solution to move deeper into the convex lens surface below the dyed surface layer. The precipitating solution is reacted to form an insoluble light reflecting layer. When the lens is placed on the eye, the opaque light reflecting layer is viewed through the transparent dyed surface layer changing the apparent color of the eye.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: February 20, 1990
    Assignee: Sunsoft Corp.
    Inventor: Charles W. Neefe
  • Patent number: 4867552
    Abstract: The invention is a cosmetic contact lens that alters the apparent color of the eye. The lens has a thin layer of dye on the convex surface. The dye being the color of the desired color change. Below the surface dye layer is a deeper layer of light reflecting material. The opaque light reflecting material is a light color and is placed behind the dyed transparent surface layer. When the lens is in place on the eye the light reflecting layer is viewed through the transparent dyed surface layer to provide the apparent eye color change.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: September 19, 1989
    Assignee: Sunsoft Corp.
    Inventor: Charles W. Neefe
  • Patent number: 4865439
    Abstract: The invention is a method of making a cosmetic contact lens that changes the apparent color of the eye. This is accomplished by the following steps. The convex lens surface is expanded and distorted by a swelling agent. The swelling agent increases the pore size allowing the precipitating solution to move deeper into the convex lens surface. The precipitating solution is reacted to form an insoluble light reflecting iris pattern layer. The iris area of the convex lens surface is dyed the desired transparent color. When the lens is placed on the eye, the opaque light reflecting layer is viewed through the transparent dyed surface layer changing the apparent color of the eye.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: September 12, 1989
    Assignee: Sunsoft Corp.
    Inventor: Charles W. Neefe
  • Patent number: 4865440
    Abstract: The invention is a method of making a colored cosmetic lens that will change the color of a dark colored eye to a light color. This is achieved by masking the area which are not to be colored, the pupil and periphery beyond the iris. A solution containing a contact lens dye, an expanding or swelling agent and a precipitating agent is prepared. The water soluble precipitating agent is capable of forming an insoluble precipitant when properly reacted. The lens and mask fixture are immersed in the three part solution allowing the solution to swell and enter the surface of the lens iris area. The dye and precipitating agent enter the expanded lens iris area. The lens and mask fixture are transferred from the first three part solution to the second reaction precipitating solution. A colored insoluble precipitant is formed in the lens iris area. The lens is removed from the mask fixture and washed to remove all unreacted materials.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: September 12, 1989
    Assignee: Sunsoft Corp.
    Inventor: Charles W. Neefe
  • Patent number: 4840477
    Abstract: A cosmetic contact lens that changes the apparent color of the eye. The lens will change a dark brown eye to light blue or green. This color change is accomplished by having a transparent dyed iris area on the convex lens surface. A light reflecting material is precipitated in the iris area of the concave lens surface. The light colored precipitated iris area on the concave surface may be opaque. The lens pupil area is clear colorless transparent or a dyed transparent color. The peripheral lens area outside the iris area is always clear transparent. When the lens is viewed on the eye the light reflecting concave iris area is viewed through the convex transparent iris color area providing the apparent eye color change.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: June 20, 1989
    Assignee: Sunsoft Corp.
    Inventor: Charles W. Neefe
  • Patent number: 4758064
    Abstract: A fiber optical cable for conducting light along its length. The cable is composed of a plurality of transparent polymer fibers. The fibers are formed by drawing the heated viscous polymer from an orifice. In pulling the softened fiber, the polymer molecules become aligned parallel to the sides of the polymer fiber. A surface coating of a lower refractive index transparent polymer is applied. The optical fibers are arranged in the desired order and heated and softened. Pressure is applied against the sides of the heated and softened fiber optic cable compressing the round polymer optical fibers to form fibers having flat sided geometric shapes to eliminate the open spaces and voids between the optical fibers.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: July 19, 1988
    Inventor: Charles W. Neefe
  • Patent number: 4738520
    Abstract: The invention is a cosmetic contact lens that changes the apparent color of the eye. The cosmetic lens is made from a cosmetic contact lens blank comprising a colored transparent polymer disk having a cone shaped central segment. A liquid lens monomer containing a dye which visibily fluoresces by the light of day is cast over the cone shaped central segment. The daylight fluorescent monomer is polymerized to form a daylight fluorescent polymer. A clear liquid lens monomer is cast on the flat surface of the daylight fluorescent polymer and polymerized to form a solid monolithic cosmetic lens blank. A concave contact lens curve is cut through the clear polymer layer and through the daylight fluorescent colored layer and into the cone shaped colored transparent layer. The size of the lens pupil and iris area is controlled by the depth the concave contact lens surface is cut into the central cone shaped transparent blank segment.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: April 19, 1988
    Inventor: Charles W. Neefe
  • Patent number: 4725133
    Abstract: A soft flexible corneal device having a diameter smaller than the cornea and a central open pupil aperture substantially the size of the pupil of the eye. The device has a concave surface radius shorter than the convex corneal radius. The concave device center of curvature is positioned to allow the inner pupil device edge and the peripheral outer device edge to both be tangent to the corneal surface. The convex surface of the device has a radius of curvature shorter than the concave surface and is also tangent to both the inner pupil edge and the outer peripheral device edge. When placed on the cornea the concave surface of the soft flexible device assumes the convex curvature of the cornea.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: February 16, 1988
    Inventor: Charles W. Neefe
  • Patent number: 4710327
    Abstract: A cosmetic contact lens is made by molding a colored cylinder with a cone shaped cavity at one end. A transparent monomer is polymerized in this cavity. The opposite end of the cylinder is cut to form a truncated cone in its outer surface. A clear and transparent monomer is polymerized to fill in the truncated cone portion of the cylinder. A contact lens is cut from the cylinder to form a lens having a colored iris area, and clear pupil and peripheral areas.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: December 1, 1987
    Inventor: Charles W. Neefe
  • Patent number: 4710328
    Abstract: A cosmetic contact lens is made by providing an iris segment piece shaped from a polymer having a daylight fluorescent colorant dispersed on it and which has a cone shaped depression in its center. A colored transparent monomer is polymerized in this depression. The iris segment piece also has a convex cone shaped periphery that is filled in with a clear transparent monomer which is then polymerized. A contact lens is cut from the thus formed cylinder to form a contact lens having a colored transparent pupil area, a daylight fluorescent iris area and a clear transparent peripheral area.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: December 1, 1987
    Inventor: Charles W. Neefe
  • Patent number: 4701038
    Abstract: A cosmetic soft contact lens which alters the apparent color of the iris by employing small light reflecting particles imbedded in a colored transparent matrix.The lens is made in the hard state from a xerogel blank having a colored pupil area surrounded by a colored iris area having imbedded light reflecting particles. A clear peripheral area is present outside the iris area. A zerogel contact lens is made from the cosmetic blank and hydrated to form a larger soft hydrogel cosmetic contact lens.The cosmetic contact lens serves a dual purpose to correct the visual errors and change the apparent color of the eye. The natural iris pattern is visible through the lens providing a natural appearance.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: October 20, 1987
    Assignee: Bausch & Lomb Incorporated
    Inventor: Charles W. Neefe