Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 4398462 | Hot melt screen printing machine The present invention consists of insulating material fibers and an electroless plating layer formed on the fibers. The plating layer preferably consists of a nickel phosphorous alloy. A squeezing means for forcing the printing ink to pass through a print... | 08/16/1983 |
| 4383482 | Printing mask for use in printing on a board having a projected portion and manufacturing process therefor A printing mask for use in printing on a board having a projection characterized in that a cavity member with a desired dimension is put on a screen tensed on a frame, a part of the screen surrounded by an open end of the cavity member is cut off, and the... | 05/17/1983 |
| 4336754 | Property identification system A coded property identification system, typically including a stencil and stencil kit, for the marking of personal property with owner identification symbols, to deter theft and also to identify the rightful owner of stolen personal property which has bee... | 06/29/1982 |
| 4336753 | Rug printing system A dye printing system for multi-color patterning or pile face sheet materials, such as tufted carpet, includes a stencil, in which the pattern elements are formed by divider walls extending perpendicularly to the plane of the sheet material. The stencil i... | 06/29/1982 |
| 4309825 | Stencil A stencil for a design having an outline and a center blank, comprising a main stencil member and an auxiliary stencil member. The main member has an opening defining the design outline and the auxiliary member has a subtending portion registrable with th... | 01/12/1982 |
| 4301726 | Method of marking hot material A combustible stencil held by holders is disposed at a position some distance apart from the end face of a hot material; immediately thereafter, a coating composition is sprayed onto the hot material through perforations of the stencil from behind to carr... | 11/24/1981 |
| 4301189 | Method for applying a solder resist ink to a printed wiring board A method of manufacturing a printed wiring board completely free from trouble of solder bridging. The printed wiring board of the present invention is provided with a raised portion of solder resist ink in the form of a ridge around the periphery of the l... | 11/17/1981 |
| 4291621 | Adaptable stencil for different mimeograph machines A mimeograph stencil having a plurality of headers secured together by perforated lines permitting removal of the portion not required by the mimeograph duplicating machine.... | 09/29/1981 |
| 4270465 | Apparatus for screening paste solder onto leaded hybrid substrates A stencil for contact printing paste solder onto lead and component pads of the leaded substrate of a SIP is a plate having holes therethrough in the pattern of the pads, a first recess in the solder side of the plate over the area of the plate having com... | 06/02/1981 |
| 4269874 | Method and apparatus for marking parts A spray of ink, paint, or other marking liquid is formed and sprayed through a stencil member for marking a part with a stencil character. Various means are provided to periodically move the stencil member for removal of marking fluid to keep the system c... | 05/26/1981 |
| 4268545 | Method of and apparatus for printing a pattern on a substrate A screen support in the form of a segmental collar for use in a screen stenciling operation. The collar segments are movable into engagement with at least the transverse marginal edges of a glass substrate for accurately locating the same relative to an o... | 05/19/1981 |
| 4242401 | Screen-printing mask A method of forming a film or fine line which is very thick in comparison with its width, by repeated printings with heterogeneous or homogeneous printing pastes by using a screen-printing mask. A screen-printing mask having spacing means formed thereon f... | 12/30/1980 |
| 4226182 | Spraying A method of spraying a liquid to form a predetermined image on an article in which the liquid is sprayed through a pair of stencils spaced apart preferably 2 mm to 8 mm and each having apertures corresponding to the shape and size of the desired image. Th... | 10/07/1980 |
| 4180621 | Pressure-sensitive duplicating stencil Pressure-sensitive duplicating stencils comprise an impregnated sheet of stencil tissue strippably attached by a laminating coating to a backing sheet, which is removed during use of the imaged stencil.... | 12/25/1979 |
| 4177729 | Method for the production marking of liquid displays A method for the production marking of liquid crystal displays whereby the closure bar of the liquid crystal cell is produced and encoded by a screen printing process. Several coding techniques which minimize production interruptions are also disclosed.... | 12/11/1979 |
| 4174664 | Cylindrical screen having aperatures with geometric centers defined by arrays of equilateral triangles An improved cylindrical printing screen having aperatures located such that their geometric centers define an array of equilateral triangles each having one side which defines a 15 degree angle with respect to the circumferential direction, another side w... | 11/20/1979 |
| 4137842 | Method and apparatus for applying decorative imprints to the surfaces of plastic workpieces System for applying decorative imprints to the surfaces of plastic workpieces by means of a heated silk-screen technique wherein the screen is initially coated with a silicone release agent which prevents sticking of the heated screen to the plastic workp... | 02/06/1979 |
| 4135020 | Process for producing art works and resulting product Art is stencil cast using modeling paste directly onto a substrate door, a wall section, such as, a panel, a rigid or flexible vinyl sheet or similar materials, which acts both as a base for the mold and as the substrate for permanent retention of the cas... | 01/16/1979 |
| 4134339 | Screen-printing stencil A screen-type printing stencil has therein plural openings arranged in an overall pattern which is formed by the repetition of the arrangement or location of a pattern period or primary or basic pattern. The pattern period includes at least two differentl... | 01/16/1979 |
| 4129076 | Color-keyed fabric for screen printing Disclosed is a woven, screen printing fabric having spaced horizontal and vertical groups of threads or fibers provided with a color contrasting with the color of the fabric and spaced so that visual monitoring of these colored fibers provides a means for... | 12/12/1978 |
| 4128057 | Stencil paper assembly A stencil paper assembly comprising a stencil paper sheet and an ink-impermeable sheet laid one over the other, said assembly being adapted to maintain a layer of ink between said stencil sheet and said ink-impermeable sheet so that numerous printed sheet... | 12/05/1978 |
| 4125658 | Apparatus for use in drawing or marking graphic characters on a surface Apparatus in the form of a stencil, wet transfer material or dry transfer material is disclosed for marking characters on a surface. A set of character-defining indicia are provided on the stencil or transfer material and symbols having simple geometrical... | 11/14/1978 |
| 4084506 | Metal mask for use in screen printing A large sized screen plate of a metal mask type for use in printing a conductor on a thick-film-circuit substrate and the like. This metal screen comprises a metal pattern layer with pattern openings corresponding to patterns to be printed and a mesh laye... | 04/18/1978 |
| 4050409 | Cylinder for reproducing raised patterns on all surfaces An apparatus for imparting a relief effect to patterns on even surfaces. A cylinder is formed by winding upon itself a thick metal sheet which is provided with holes therethrough. A doctor permits the depositing of a coat of a colorless varnish onto the s... | 09/27/1977 |
| 4024340 | Circuit for an electronic stencil cutting machine Apparatus for electrically burning information from an original document into stencil material comprising a stylus for applying electrical pulses to the material and an electrical circuit comprising an optical sensor for scanning information on the origin... | 05/17/1977 |
| 3992989 | Variable pattern screen printer The variable pattern screen printer includes a support frame defining a central opening and a plurality of elongated patterned printing screens movable through the support frame across the opening. The individual printing screens are independently moved a... | 11/23/1976 |
