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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| D581957 | Ophthalmic lens edger | 12/02/2008 |
| D581295 | Tracer for spectacle frame rims, with viewing screen | 11/25/2008 |
| 7452076 | Collection of ophthalmic lens pairs and ophthalmic lenses having residual reflections exhibiting colors of different intensity Each lens of a pair of lenses is provided on at least one of its faces with an antireflection coating having a luminous reflection factor Rv that is 2.5% or less, having residual reflections exhibiting the same perceived color, the hue angle (h) for the a... | 11/18/2008 |
| D579354 | Tracer for spectacle frame rims | 10/28/2008 |
| 7438417 | Ophthalmic diagnostic apparatus for different types of tests An ophthalmic diagnostic apparatus, includes a first body (6), for viewing from a given position (4) and a second body (7, 8), for viewing from the position (4), each embodied for display of ophthalmic test patterns, the second body (7... | 10/21/2008 |
| 7407284 | Methods for coating lenses Methods of coating at least a portion of a curved surface of a lens with a polarizing liquid. One method includes providing a lens having a curved surface and a lens axis; and rotating the lens about a rotation axis such that a polarizing liquid flows over at least ... | 08/05/2008 |
| 7329000 | Clipped lens eyeglasses The clip-lens eyeglasses frame includes a face structure provided with elements for clipping to at least one lens and arranged to operate by resiliently clamping the lens in a direction that is generally axial relative to the lens. ... | 02/12/2008 |
| 7275822 | Progressive addition lenses with adjusted image magnification The invention provides a method for increasing the magnification of a lens without changing the dioptric power. The method of the invention uses a measurement or an estimate of an individual's retinal function in designing the lens to provide the magnification neede... | 10/02/2007 |
| D549286 | Demonstrator of optical phenomena in a case | 08/21/2007 |
| 7223164 | Optical surface-finishing tool An optical surface-finishing tool includes a rigid support (4) having a transverse end surface (13); an elastically-compressible interface (5) which is applied against the end surface (13) such as to cover same; and a flexible buffer (... | 05/29/2007 |
| 7201631 | Automatic or semi-automatic device for trimming an ophthalmic lens Device comprising in combination: elements for detecting (4) characteristics of a lens; elements for integrating characteristics representing a patient's morphology; a support (3) of the mobile lens along a predetermined trajectory between a first meas... | 04/10/2007 |
| 7122223 | Method for vacuum deposit on a curved substrate The invention concerns a method which consists in a process known per se in producing, on the curved substrate (10) to be treated, a film of material derived from a specific material source (13). The invention is characterized in that it consists in in... | 10/17/2006 |
| 6913356 | Method for fitting a holding block to a semifinished ophthalmic lens blank A method of fitting a holding block to a semifinished ophthalmic lens blank intended to have a predetermined prism, which method includes the following steps: positioning the blank on a fixed base so that the finished face of the b... | 07/05/2005 |
| 6896587 | Process for grinding an ophthalmic lens, including a plotting operation without contact Process for grinding the rim of an ophthalmic lens that has two opposite faces, following a predetermined contour corresponding to that of a ring of a spectacle frame in which the lens is intended to be mounted, the contour being delimited on each of the faces by an... | 05/24/2005 |
| 6884369 | Mold and a method of hot-forming a thermoplastic lens The mold comprises two dies mounted in a sheath to slide along the axis of the sheath and each presenting a forming face facing the other. The two dies and the sheath are provided with intrinsic heat transfer means. A parison or preform of said thermoplastic ... | 04/26/2005 |
| 6250993 | Method for finishing spectacle lenses, and related device The invention concerns a method for finishing a spectacle lens after it has been cut a first time, in order to pass said spectacle lens again on the grinder, which consists in implanting thereon a prehensile block for setting it on such a grinder. The inv... | 06/26/2001 |
| 6224210 | Multifocal artificial ocular lens with a transparency varying with illumination A multifocal artificial ocular lens has at least two corrective areas, namely a near vision area to correct near vision and a distance vision area to correct distance vision. The transparency of the lens varies in inverse proportion to its illumination. A... | 05/01/2001 |
| 6188040 | Method for making an object made of translucent synthetic material, in particular an ophthalmic lens, marked object and corresponding reader A translucent synthetic material article such as an ophthalmic lens comprises a plurality of well-shaped cells, some of which have at least one upstanding projection on their bottom walls. The projection have a height between 1/5 and 1/1 the cell depth an... | 02/13/2001 |
| 6145987 | Multifocal ophthalmic lenses with spherical aberration varying with the addition and the ametropia A multifocal ophthalmic lens is disclosed. The power profile (P) of the lens as a function of the height (h) above the axis (A) of the lens and the addition (Add) corresponding to the degree of presbyopia of the wearer is defined by an equation of the for... | 11/14/2000 |
| 6097590 | Imaging device An imaging device includes an image acquisition device to which there corresponds an imaging axis and a viewing screen to which there corresponds an observation axis and two units hinged together in the manner of a pendulum about a horizontal pivot axis a... | 08/01/2000 |
| 6017121 | Multifocal artificial ocular lens with a transparency varying with illumination A multifocal artificial ocular lens has at least two corrective areas, namely a near vision area to correct near vision and a distance vision area to correct distance vision. The transparency of the lens varies in inverse proportion to its illumination. A... | 01/25/2000 |
| 5845408 | Contour reading device, in particular for eyeglass lenses A contour reading device, in particular for eyeglass frames, includes a holding arrangement to support a template at a fixed position and a carriage mobile relative to the holding arrangement and carrying a feeler at the end of a rod. To read off the posi... | 12/08/1998 |
| 5806198 | Template for calibrating an ophthalmic lens grinding machine, and corresponding calibration method Designed to be fitted to an ophthalmic lens grinding machine to be calibrated instead of an ophthalmic lens, a calibration template is in the general form of a disk with a circular contour over at least part of its perimeter. Its contour forms two localiz... | 09/15/1998 |
| 5802731 | Calibration gage for calibrating a device for reading off eyeglass frame contours, and corresponding calibration method A calibration gage for calibrating a device for reading off the contours of eyeglass frames is designed to be fitted to the contour reading off device to be calibrated in place of an eyeglass frame. It includes a plate with at least two ribs projecting fr... | 09/08/1998 |
| 5669807 | Preform for attaching a holding member to an optical lens, and method of using it A preform for attaching a holding member to an optical lens comprises a base constrained to rotate with the optical lens to be machined by a low melting point metal coupling layer cast in situ and a superstructure capped by a drive tool. The edge of the b... | 09/23/1997 |
| 5660578 | Method for determining the lens grinding error and contour follower reading error to calibrating a lens trimming machine To determine the reproduction error of a trimming machine associated with a contour follower device, a first reading is taken on the contour follower device from a template of known shape. A part is then machined on the trimming machine in accordance with... | 08/26/1997 |
| 5611969 | Optical lens mold and method of making the mold In this method of making a mold for molding an optical lens an annular closure sleeve is fitted around two molding shells and cooperates with them to define the required molding cavity. The closure sleeve is made from a heat shrinkable synthetic material ... | 03/18/1997 |
| 5605498 | Machine for trimming eyeglass lenses An eyeglass lens trimming machine includes spring arrangements operative between a carriage and a chassis to urge the carriage towards an associated feeler. The feeler being mobile on the chassis, auxiliary spring arrangements between it and the carriage ... | 02/25/1997 |
| 5562527 | Grinding machine for grinding eyeglass lenses A grinding machine for grinding eyeglass lenses includes at least one grinding wheel rotatably mounted on a chassis. A carriage is pivoted to the chassis to pivot about an axis parallel to the rotation axis of the grinding wheel. A support spindle is rota... | 10/08/1996 |
| 5530491 | Simultaneous vision ophthalmic lens for correcting presbyopia and pair of ophthalmic lenses of this kind for the same wearer To define a far vision area and a near vision area in a simultaneous vision ophthalmic lens for correcting presbyopia, the curve representing the proximity as a function of the distance from the axis lies within an area between a lower envelope curve and ... | 06/25/1996 |
| 5467869 | Eyeglass lens packaging A display container for eyeglass lenses includes a plate to receive the eyeglass lens to be displayed and two half-shells pivoted to the edge of the plate about a pivot axis globally perpendicular to the plate. Each half-shell can move between a closed po... | 11/21/1995 |
| 5458820 | Method of making a thermoplastic lens coated with a thermosetting protective layer A method for making a thermoplastic optical lens having at least one side coated with a thermosetting protective film is provided. The method includes steps of applying a thermosetting coating composition to a molding surface of the molding shell, disposi... | 10/17/1995 |
| 5457504 | Eyeglass frame In an eyeglass frame each lens is gripped between a relatively rigid half-rim and a filament. The half-rim is fixed to a tenon in which is formed a cavity opening through an orifice forming a keyhole slot. The filament includes a knot retained in the cavi... | 10/10/1995 |
