Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4964867 | Patellar prosthesis Improved resistance to linear displacement through bone is observed in a prosthetic patellar joint when the joint is attached to the patella by a protuberance which has a concave shape.... | 10/23/1990 |
| 4755185 | Prosthetic joint A three-component prosthetic joint comprising a first bone-attachable component having a planar articular surface and a second bone-attachable component having an arcuate articular surface and a substantially congruent bearing component held therebetween,... | 07/05/1988 |
| 4715941 | Surface modification of organic materials to improve adhesion A silicon-modified organic surface is roughened by treatment with an oxygen containing plasma. If necessary the organic surface may be silicon-modified by treatment with a silicon containing material prior to plasma treatment. The roughened organic surfac... | 12/29/1987 |
| 4556628 | Process for producing printed circuit boards with metallic conductor structures embedded in the insulating substrate A process for producing printed circuit boards having metallic conductor structures embedded in the insulating substrate and whose front and back sides are conductively connected by means of plated through holes. The first steps of the process comprise pr... | 12/03/1985 |
| 4540464 | Method of renewing defective copper conductors on the external planes of multilayer circuit boards After cleaning and removal of oxidic layers, the defective copper conductors are completely etched off the surface of the external planes of a multilayer circuit board, and the copper on the walls of the plated through holes is etched at an etching rate c... | 09/10/1985 |
| 4312755 | Reverse osmosis system The relative concentrations of solvent and solute in a solution are altered by a system which includes a cell having chambers separated by a membrane and a means for creating a pressure differential across the membrane. A solution moves through an inlet m... | 01/26/1982 |
| 4289572 | Method of closing silicon tubular bodies There is described a method of closing ends of silicon tubular bodies in which the tube end to be closed is dipped into melt of silicon maintained at substantially the melting temperature of silicon until the end of the tube is heated to the melting point... | 09/15/1981 |
| 4263682 | Self-sealing valve and fluid fillable article including such a valve A self-sealing valve useful in a fluid fillable article, such as a mammary prosthesis, includes first and second planar members which are bonded together so as to leave an elongated unbonded portion therebetween. Openings are formed for communication betw... | 04/28/1981 |
| 4239042 | Catheter placement system In a through-the-cannula catheter placement system, a catheter is used which comprises a body portion and a tip portion at one end of the body portion. The body portion has a double-wall structure. The outer wall is a tube of pliable, nonthrombogenic mate... | 12/16/1980 |
| 4205401 | Mammary prosthesis which resists capsular contracture A surgically implantable mammary prosthesis comprises a sac containing a filler material. The filler material is present in an amount sufficient to give the sac a relatively low profile shape and a pliant, responsive nature. The prosthesis includes a rest... | 06/03/1980 |
| 4198132 | Contact lens A contact lens of a preselected mass has an optical zone and at least one peripheral zone. The optical zone has a shape and thickness sufficient to result in a desired optical correction. At least one peripheral zone has a thickness selected to correspond... | 04/15/1980 |
| 4194815 | Semi-scleral contact lens The inner surface of a semi-scleral contact lens is shaped relative to the topography of an individual eyeball to achieve central contact and edge contact with tearfilm clearance therebetween. The lens has improved centering properties. The lens includes ... | 03/25/1980 |
| 4193672 | Contact lens with improved interior surface A contact lens has an improved interior surface which includes an optical zone and peripheral zone. The optical zone has a radius of curvature similar to that of the cornea of the eye to be fitted. The peripheral zone defines an arc which is substantially... | 03/18/1980 |
| 4189290 | Wire coating using a liquid polymer In accordance with a preferred embodiment of this invention there is provided a method and apparatus for coating a wire or cable with a thermosetting polymer formed from a "liquid polymer" system such as a two-component polysiloxane. This system may be ch... | 02/19/1980 |
| 4157085 | Surgically implantable tissue expanding device and the method of its use A surgically implantable device for expanding skin and mucous tissue comprises a partially collapsed sealed envelope formed from a material which is permeable to extracellular body fluid. The envelope contains a material which establishes an osmotic poten... | 06/05/1979 |
| 4138382 | Hydrophilic, water-swellable, crosslinked, copolymer gel and prosthesis employing same A hydrophilic, water-swellable, crosslinked gel is produced by copolymerizing a water soluble vinylic constituent in aqueous solution with olefinic hydrolyzable silanes which contain low molecular weight alkoxy groups. Copolymerization is via the unsatura... | 02/06/1979 |
| 4078929 | Method for two-color development of a xerographic charge pattern A charge pattern of a single polarity and having at least three different levels of potential is developed in two colors by utilizing relatively negatively charged toner particles of one color and relatively positively charged toner particles of a second ... | 03/14/1978 |
| 4077700 | Waveguide addressing and modulating method and apparatus Waveguides having light propagating therethrough are positioned between a common electrode and individual electrodes arranged along a charge-coupled device. The waveguides are of a type which modulate the propagating light responsive to an electric field.... | 03/07/1978 |
| 4059443 | Electrical information storage system An electrical information or latent image storage system using a storage element which comprises a layer of substantially electrically insulating material having a layer of electrically photosensitive particulate material embedded therein, with a layer of... | 11/22/1977 |
| 4046472 | Electrostatic imaging apparatus An imaging apparatus in which an electrostatic latent image is developed on an insulating web at a development station after which the web is transported to a platen capable of supporting a receiving surface. The web is transported from the development lo... | 09/06/1977 |
| 4038665 | Recording with donor transfer of magnetic toner A method and apparatus for selectively transferring magnetic toner from a reservoir to the imaged areas of a copy web. The reservoir is used to develop a donor web in which a multiplicity of microfields have been recorded. The donor web is subsequently pa... | 07/26/1977 |
| 4023968 | Photoelectrophoretic color imaging process in which back migration is eliminated In an electrophoretic reproduction process wherein a colored reproduction of an original is obtained by sequentially electrophoretically generating at least two visible monochromatic images, and superimposing said images in registry upon a copy web to for... | 05/17/1977 |
| 4015983 | Method of erasing manifold images A fracturable manifold image is created in an imaging layer sandwiched between donor and receiver sheets by a conventional manifold imaging process using an imaging electrostatic field of a predetermined voltage. The fracturable manifold image is erased b... | 04/05/1977 |
| 4003333 | Development system Apparatus for transporting particulate development material from a container to a remote location for development of an electrostatic latent image. Also disclosed is a multilayered donor belt for use in a particulate development system.... | 01/18/1977 |
| 4002998 | Externally controllable miniature lasers Lasers and methods of lasing include introducing light to an optical wave guide from a pumping light source. The wave guide is formed of a deformable elastomer film having a laser active material therein. The film is deformable by an electric field impres... | 01/11/1977 |
| 3990393 | Apparatus for depositing magnetic material on an image bearing member Apparatus for depositing magnetic material on a support member having an electrostatic latent image thereon.... | 11/09/1976 |
| 3989355 | Electro-optic display system An electro-optic display having a plurality of sets of overlapping grid address layers, wherein each set of address layers comprises electrode means for allowing transmission of light through only one half of the total area of the display, and successive ... | 11/02/1976 |
| 3985277 | Web handling device A web forwarding device wherein a web is friction driven by a drive means associated with a web pressure backing roll and a pair of pressure arms. The amount of wrap and tension around the backing roll is controlled by a pair of free floating pivotally mo... | 10/12/1976 |
| 3982831 | Electrostatographic reproduction apparatus and drive therefor Automatic electrostatographic reproduction apparatus in which an image to be reproduced is moved during imaging thereof on to a moving photoconductive plate. The apparatus includes a simple and effective drive for the image carrier. The drive is particula... | 09/28/1976 |
| 3971658 | Imaging process employing friction charging in the presence of an electrically insulating liquid Friction charging of insulating and photoconductive insulating members is accomplished in the presence of an insulating liquid. In a preferred embodiment, the insulating liquid is a developer liquid and the friction charging step may simultaneously erase ... | 07/27/1976 |
