Johnson and Johnson Vision Care, Inc.

Johnson & Johnson Vision Products Inc.

Cargill Inc.

Other

Jonhson & Johnson

Stephen C Pegram

Craig William Walker

Ture Kindt-Larsen

Wallace Anthony Martin

Kent Young

Kerry T Sanders

Daniel Tsu-Fang Wang

Michael Francis Widman

Stephen Robert Beaton

Jonathan Patrick Adams

Leslie A Voss

Svend Christensen

Kaj Bjerre

Jeffrey Steven

Scott P Klein

John R Schmedeman

Thomas L Coulter

Shivkumar Mahadevan

Edward R Kernick

Victor Lust

Donnie Jerome Duis

Kornelis Renkema

Dominic P Gourd

Yongcheng Li

Allan W Kimble

James D Glover

Stanley A Patterson

Christopher L Davidson

Robert B Phillips

Carl Crowe

Joseph W Ricard

Sanjay Rastogi

Thomas P Bingaman

James R White

Stacey V Maggio

Kent A Young

Domingo P Pascual

Vandana R Srinivas

Donnie J Duis

Methods of detecting the discharge and uptake rates of ophthalmic lenses containing pharmaceutical agents are disclosed herein.

Methods and devices to test diffusion rates of ocular drug delivery systems

The invention provides methods of manufacturing toric lenses, apparatuses useful in the method of the invention, and lenses produced according to the method in which method the position of one mold half in relation to its complementary mold half is more precisely controlled so that tilting and rotation of the mold halves in relation to each other is substantially eliminated.

Axis control in toric contact lens production

The present invention relates to a stackable packing element for use in degassing liquid ophthalmic lens monomer and a lens resulting therefrom. One or more stackable elements can be used to form a modular degasser and implement an in-line degassing process, employing same. The stackable packing element is comprised of a body module and a removable puck component.

Thin film in-line degasser

This invention provides an apparatus and method for assembling first and second mold parts having contact lens forming surfaces, wherein said first mold part has a reaction mixture on said contact lens forming surface, said apparatus comprising movement preventing means which prevents said first mold part from moving while said second mold part is controllably moved from a first position wherein said second mold part is not in contact with said reaction mixture on said first mold part to a position wherein the majority of said contact lens forming surface of said second mold part has been wetted by said reaction mixture on said first mold part.

Method and apparatus for contact lens mold assembly

The invention is a stackable packing element for use in degassing liquid ophthalmic lens monomer, and to a modular degasser and process, including an in-line degassing process, employing same. The stackable packing element is comprised of a body module and a removable puck component.

A method and a device for removing molded soft contact lenses, high-precision intraocular lenses and the like, from the individual molds in which they are produced. Provided is an infra-red radiation or heater device constituted of silicon carbide IR-emitters, and which employs an individual infra-red emitter for each individual mold, to impart a desired thermal gradient.

Silicon carbide IR-emitter heating device and method for demolding lenses

An on-line sampling and analysis system and method in which a sampling line inlet pipe receives a continuous flow of a suspension or a slurry having particulates, such as grains, seed or phosphate rock, for rapid analysis of the contents therein in a flowing stream. A sample presentation area such as a window is positioned below the flow of the suspension or slurry in an assembly allowing for the depositing of a sample of solid content from the suspension or slurry which is collected for viewing by a computer controlled video camera. The camera is provided for imaging the sample of the solid content collected at the sample presentation area, and a personal computer analyzes images provided by the camera to characterize the content of the fluid media. A media flow director positioned in the suspension or slurry flow through the assembly, and above the sample presentation area, generates a vortex for removing the sample of the solid content deposited on the sample presentation area, allowing for the collection of another sample from the suspension or slurry at the sample presentation area. The vortex tube is coupled with associated bypass piping to remove the sample from the system, or return the solid content sample to the flow of the fluid suspension or slurry downstream of the sample presentation area for continuous operation without interruption of the flow in the sampling line. The personal computer provides a user interface for monitoring the content of the suspension or slurry.

Particulate compositions

An apparatus and method for partially curing a polymerizable monomer or monomer mixture to form a soft contact lens includes a transport device for transporting a plurality of contact lens molds to a precure station in a low oxygen environment, each contact lens mold including a first and second mold half with a polymerizable monomer or monomer mixture therebetween. A clamping member having a plurality of mold engagement members clamps a first contact lens mold half against a second contact lens mold half for a predetermined pressure and time. While the mold halves of the contact lens mold are clamped, the polymerizable monomer or monomer mixture is exposed to a radiant energy source for polymerizing the polymerizable monomer or monomer mixture contained in each contact lens mold.

Mold clamping and precure of a polymerizable hydrogel

On-line sampling and image analyzer for determining solid content in a fluid media

Designs for basecurves are disclosed which are designed to promote adhesion of an excess polymer HEMA ring to the basecurve during a demolding operation such that the excess polymer HEMA ring is removed along with the basecurve during the demolding operation. The basecurve mold designs promote and maintain adhesion of an excess polymer HEMA ring to the basecurve in a process for molding cast contact lenses in mold assemblies, each comprising a frontcurve and a spaced basecurve, and wherein a molded lens is formed therebetween. In an embodiment of the invention, the annular area of the basecurve mold can be formed with an annular step which includes projecting teeth positioned therearound which project into the excess polymer HEMA ring.

Basecurve mold designs to maintain HEMA ring/basecurve adhesion

An apparatus for separating individual contact lens mold assemblies, the assemblies each being a front curve mold half and a back curve mold half, each mold half having annular circumferential flanges, is included. The apparatus includes a device for applying steam to the back curve mold half to form a temperature gradient from the front mold half to the back mold half. The apparatus also includes a second device to pry the mold halves apart.

Mold separation method and apparatus

An apparatus for separating individual contact lens mold assemblies that each contain a contact lens mold between a front curve mold half and a back curve mold half, each of the mold halves having annular circumferential flanges, is disclosed. The apparatus comprises a first device for applying steam at a first temperature to the back curve mold half to form a temperature gradient ranging from about 2.5.degree. C. to 6.0.degree. C. between the back curve mold half relative to the front curve mold half, and, a second device including a set of pry tools that are inserted between the circumferential flanges of the front mold and back mold halves of the contact lens mold assembly, the pry tools including a first set of pry fingers for retaining the front curve mold half and a second set of pry fingers for biasing the back curve mold half upwardly at a predetermined force with respect to the front curve mold half to effectively remove the back mold half therefrom.

Mold separation apparatus

Growing community of inventors

Jacksonville, FL, United States of America

Stephen C Pegram