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| Number | Title | Issue Date |
| 4383165 | Method for aligning laser beam with fuses in integrated circuit A method is disclosed for aligning a laser beam to an integrated circuit. A pair of generally parallel spaced-apart fusible links are formed on the circuit. The laser beam is positioned to a site known to be to one side of one link. Then the beam is stepp... | 05/10/1983 |
| 4365135 | Shaping of thermal insulation material The invention relates to the formation of a protective skin on blocks of microporous thermal insulation material. Such material is difficult to protect because the securement of a protective layer by some form of adhesive securement provides only a relati... | 12/21/1982 |
| 4358659 | Method and apparatus for focusing a laser beam on an integrated circuit A laser beam (38) is focused on the surface of a semiconductor substrate (10) by translating an objective lens (70) along the path of the laser beam (38). The substrate (10) is fabricated to have a region (12) of an opposite conductivity type and to have ... | 11/09/1982 |
| 4356376 | Pulse laser pretreated machining An improved laser-assisted machining process has special application to difficult-to-machine materials such as the titanium alloys and high temperature superalloys. A layer of material to be removed by a cutting tool is made weaker by drilling a series of... | 10/26/1982 |
| 4332999 | Method for machining a workpiece with a beam of radiant energy assisted by a chemically-reactive gas A method for machining a workpiece with a beam of radiant energy in the presence of a chemically-reactive gas characterized in that (a) the beam heats the area of incidence of the workpiece to a reaction temperature that is below the melting point of the ... | 06/01/1982 |
| 4329564 | Laser undercutting method Removing some of the insulating material between commutator bars of flat or cylindrical commutators, hereinafter referred to as "undercutting, " by exposing the commutator surface to one or more energy beams of a frequency and an energy level and for a ti... | 05/11/1982 |
| 4323757 | Method for cutting specific layer of synthetic resin laminated film A method for cutting a specific layer of a synthetic resin laminated film comprising at least two kinds of closely laminated synthetic resin material film layers having spectral absorption characteristics different from each other, which comprises placing... | 04/06/1982 |
| 4317023 | Method of making slotted well screen Plastic well screen has tapered, undercut slots formed by a laser beam focused through a lens having its focal point located at or slightly away from the surface of the plastic cylinder being slotted so that the laser beam diverges as it passes through th... | 02/23/1982 |
| 4311870 | Efficiency of silicon solar cells containing chromium Efficiency of silicon solar cells containing about 1015 atoms/cm3 of chromium is improved about 26% by thermal annealing of the silicon wafer at a temperature of 200° C. to form chromium precipitates having a diameter of less than 1... | 01/19/1982 |
| 4307046 | Method of laser machining contact lenses A method of cutting spherical, aspheric and toric optical surfaces by rotating the lens around the optical axis and moving a cutting device on a X and Y axis to produce the desired lens shape. The energy provided by an infrared laser may be used for simul... | 12/22/1981 |
| 4289952 | Process for controlling powder size with optical energy Metal or ceramic powders having a narrow size distribution are produced by passing a gas entrained powder through an intense light beam which couples preferentially with the larger particles to heat and selectively vaporize a portion of the larger particl... | 09/15/1981 |
| 4266112 | Web-cutting process A cutting method and apparatus using a plurality of impact-type laser or water jet cutters mounted on a framework above a moving web. The cutters are disposed in a spaced relationship to each other along a line parallel with the direction of web travel. B... | 05/05/1981 |
| 4257824 | Photo-induced temperature gradient zone melting A temperature gradient zone melting process is disclosed wherein the temperature gradient is established substantially across only the molten zone by preferentially heating the molten zone. In a specific embodiment, the mechanism for inputting heat to the... | 03/24/1981 |
| 4238661 | Pressure-sensing capacitor and method of trimming same A pressure-sensing capacitor and a method for trimming the capacitor is disclosed. The capacitor includes a pair of spaced flexible quartz plates. A thin circular layer of conductive metal is formed on the opposing inner surfaces of the plates to define t... | 12/09/1980 |
| 4238662 | Pressure-sensing capacitor and method of trimming same A pressure-sensing capacitor and a method for trimming the capacitor is disclosed. The capacitor includes a pair of spaced flexible parallel quartz plates. A thin circular layer of conductive metal is formed on the opposing inner surfaces of the plates to... | 12/09/1980 |
| 4224101 | Method of manufacturing semiconductor devices using laser beam cutting A method of manufacturing semiconductor devices using laser beam cutting is disclosed in which the surface debris or pollution resulting from the laser beam cutting operation is removed by a preferential etching treatment. Since the polluting particles ar... | 09/23/1980 |
| 4169976 | Process for cutting or shaping of a substrate by laser A process for cutting or shaping of a ceramic substrate with laser light, comprising pulsing the laser light and moving the pulsing laser light source with respect to the substrate so that individual light pulses strike different spots along the substrate... | 10/02/1979 |
| 4167662 | Methods and apparatus for cutting and welding Methods and apparatuses for cutting, welding, drilling or surface treating a workpiece are described. A laser beam is directed towards a workpiece and an arc is struck between an electrode and the heat affected zone created by the laser beam in the workpi... | 09/11/1979 |
| 4158555 | Method of cutting of glass strand and product produced thereby A method of cutting glass fiber strands is disclosed wherein said strands are driven across the beam of an interruptable laser. The laser beam melts the strand at each pulse of the beam cutting the strand into short lengths. The cut strands can be immedia... | 06/19/1979 |
| 4149918 | Method and apparatus for producing safety belts with reduced kerfs This invention relates to a method and apparatus for reducing the sizes of the kerfs of safety belts made from severed webs of woven synthetic filaments such as polyamide or polyester filaments. In the preferred method, a laser beam sweeps across the belt... | 04/17/1979 |
| 4146380 | Method and apparatus for subdividing a gas filled glass tube with a laser A focused laser beam is directed at the wide side surface of a long, sealed, gas-filled, glass tube having a longitudinal axis and an elongated cross section. Repeated relative back and forth movement is introduced between the laser beam and the wide surf... | 03/27/1979 |
| 4125757 | Apparatus and method for laser cutting A laser beam is directed towards a workpiece immersed beneath the surface of a liquid coolant. An exothermically reactive gas is directed through the liquid coolant to the workpiece under sufficient pressure and velocity to sweep away a sufficient amount ... | 11/14/1978 |
| 4105889 | Laser method of introducing mercury to gas discharge display panels There is disclosed an improved gaseous discharge display panel device and process of manufacturing same. A large number of cathode substrate electrode and mask structures are printed and fired on a single glass sheet, the electrodes being printed first an... | 08/08/1978 |
| 4048464 | Method of and means for cutting hose for high pressure hydraulic systems A method of and means for cutting hose of the type designed for use in high pressure hydraulic systems is disclosed in which the impingement of a high power laser beam is moved about the periphery of the hose in a plurality of passes. An embodiment is des... | 09/13/1977 |
| 4045201 | Method and apparatus for subdividing a gas filled glass tube An elongated glass tube light source containing a luminophor and a radioactive gas is subdivided into a plurality of light sources by a plurality of laser beams directed at the tube at spaced points along the length of the tube. The laser beams are scanne... | 08/30/1977 |
| 4044936 | Glass tube cutting Apparatus for cutting glass tubing transverse to its length comprises a laser, an optical system for directing the laser along a full circumferential line around the tubing without rotating the tubing and means for forming a point of weakness on the circu... | 08/30/1977 |
| 4038108 | Method and apparatus for making an instantaneous thermochemical start A method and apparatus for making an instantaneous thermochemical start on the surface of a metal workpiece. The method resides in the use of laser beam focused to a small spot to bring the ferrous workpiece to ignition temperature in combination with a h... | 07/26/1977 |
| 4009723 | Method for cutting a tobacco product rod and increasing the end strength thereof A tobacco rod is cut with a laser beam using specified time constraints and power levels under essentially atmospheric conditions without utilizing coolant means to prevent charring of the cigarette paper. Additionally, end integrity of cut rods can be in... | 03/01/1977 |
| 4002877 | Method of cutting with laser radiation and liquid coolant A method of cutting a multilayer pile of sheet material with a beam of laser radiation is disclosed. A laser beam having a low order mode intensity distribution is focused onto the pile and during cutting a stream of liquid coolant is directed into the ma... | 01/11/1977 |
| 3965328 | Laser deep cutting process A process of cutting thick metal workpieces wherein a cutting laser beam is inclined back from a cutting direction and oscillated in a direction parallel with the cutting direction while a gas jet is directed from above the workpiece at an angle approxima... | 06/22/1976 |
| 3965327 | Method of cutting material to shape from a moving web by burning A method and apparatus for cutting a predetermined pattern in a moving web of material, such as paper, cardboard or the like is disclosed wherein a laser beam is deflected by a series of pivotable mirrors. The pivoting of the mirrors is controlled so as t... | 06/22/1976 |
| 3950189 | Method for cutting out a work piece by a plasma jet or similar cutting arrangement A method for cutting out work pieces which have similar contours on both sides of an axis of symmetry thereof comprising the steps of scanning the contour of the work piece for developing control signals corresponding to the shape of the work piece, deliv... | 04/13/1976 |
| 3935419 | Severing of glass or vitrocrystalline bodies In the severing of bodies of glass or vitrocrystalline materials by the application of a laser beam, the severing operation is improved by employing a beam of which at least the predominent wavelength is such that at least 10% of the beam energy penetrate... | 01/27/1976 |
| 3932726 | Glass cutting In the severing of glass by irradiating it with a laser beam along the line where it is to be severed, the quality and speed of the severing operation are improved by preliminarily scoring the glass along such line.... | 01/13/1976 |
