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| Number | Title | Issue Date |
| 4046986 | Apparatus for making printing plates and other materials having a surface in relief A surface in relief is formed by scanning coherent radiation over a surface defined by a thin film supported upon a plastic substrate. The wave length of the coherent radiation is chosen so that it is absorbed by the film and hence removes portions of the... | 09/06/1977 |
| 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 |
| 4042334 | High temperature chemical reactor A high temperature reactor comprises a tube which defines a reactor chamber; means for introducing the inert fluid into the reactor tube to provide a protective blanket for the inside surface of the tube; means for introducing reactants into the chamber, ... | 08/16/1977 |
| 4036012 | Laser powered rocket engine using a gasdynamic window Optics capture and concentrate laser radiation and send it through a gasdynamic window which is formed by supersonic expansion of unseeded hydrogen gas exiting a passageway directly under the opening. Seeded fuel is inserted into the chamber where it is h... | 07/19/1977 |
| 4034181 | Adhesive-free process for bonding a semiconductor crystal to an electrically insulating, thermally conductive stratum A broad silver coated direct band-gap semiconductor crystal is bonded to a sapphire face plate without using any adhesive by a process of positioning the crystal with a broad surface against the sapphire, and bombarding the crystal with an electron beam r... | 07/05/1977 |
| 4032861 | Laser device for altering surfaces in accordance with given patterns A high gain optically pumped laser device includes a mask having cut-out portions defining a given pattern disposed in the resonant optical cavity defined between end mirrors at opposite ends of the laser material. Each of the end mirrors is equivalent to... | 06/28/1977 |
| 4029932 | Lined pipe, and method and apparatus for making same There is disclosed apparatus for lining the interior of a metal pipe with a resistant metal. A resistant metal ribbon is fed from a roll external to the pipe and is drawn into the pipe by a first trolley which moves inside the pipe from one end of the pip... | 06/14/1977 |
| 4027137 | Laser drilling nozzle A laser beam is applied to a workpiece by means of a spring-loaded metal nozzle which engages the workpiece. An aperture in the workpiece end of the nozzle accurately defines the size of the hole formed in the workpiece by the laser beam. A chamber locate... | 05/31/1977 |
| 4015221 | Preparation of gravure printing surfaces In apparatus for excavating material from a gravure cylinder surface, for example, by means of a laser beam, the polarization of the laser beam is modulated and the modulated beam is then passed through a polarization analyzer system to a focusing lens wh... | 03/29/1977 |
| 4010363 | Laser alignment system A gas laser has a tube for producing a laser beam and a plurality of heaters around the tube. A detector responds to a misalignment of the laser sending a response to control circuits for the heaters. In response to detector's output, the heater control c... | 03/01/1977 |
| 4009364 | Curing of protective coatings with IRASER beams A method and arrangement for curing paint films and coating compositions by means of infrared radiation emitted by IRASERS, whereby the intensity of the IRASER beam is determined or controlled by the simultaneous measurement of the surface temperature of ... | 02/22/1977 |
| 3989778 | Method of heat sealing thermoplastic sheets together using a split laser beam Thermoplastic materials, particularly material in sheet form, may be sealed or thermowelded together using the energy from a single laser beam source by splitting the beam and directing it by mirrors to desired seal areas on the opposed sides of the mater... | 11/02/1976 |
| 3977478 | Method for laser drilling subterranean earth formations Laser drilling of subterranean earth formations is efficiently accomplished by directing a collimated laser beam into a bore hole in registry with the earth formation and transversely directing the laser beam into the earth formation with a suitable refle... | 08/31/1976 |
| 3955921 | Method of killing microorganisms in the inside of a container utilizing a laser beam induced plasma Novel method of killing microorganisms in the inside of a container comprising repeatedly sparking a focused, ultra-short-pulsed laser beam in the inside thereof.... | 05/11/1976 |
| 3956727 | Laser activated superconducting switch A superconducting switch or bistable device comprising a superconductor in a cryogen maintaining a temperature just below the transition temperature, having a window of the proper optical frequency band for passing a laser beam which may impinge on the su... | 05/11/1976 |
| 3950095 | Positioning device for a flat rectangular workpiece A flat rectangular workpiece, such as a photographic plate in a photo-repeating apparatus designed to produce integrated-circuit masks, laterally overhangs a platform of a carriage which is slidable on a mobile supporting table. The platform has two end s... | 04/13/1976 |
| 3947654 | Method of generating laser-radio beam A laser-radio frequency system for generating a high temperature beam and for directing and modulating the combined beam at a workpiece or target. The system includes a hollow circular electrode mounted within a circular nozzle and spaced apart from the n... | 03/30/1976 |
| 3947093 | Optical device for producing a minute light beam An optical device for producing a minute beam comprises beam forming means such as laser generator or the like, annular beam forming means such as lens or annular aperture mask for forming the beam from the beam forming means into a beam of annular cross ... | 03/30/1976 |
| 3947653 | Method of spray coating using laser-energy beam A laser-radio frequency system for generating a high temperature beam and for directing and modulating the combined beam at a workpiece or target. The system includes a hollow circular electrode mounted within a circular nozzle and spaced apart from the n... | 03/30/1976 |
| 3935117 | Photosensitive etching composition A method of forming patterns on a semiconductor element is disclosed comprising the steps of (a) depositing a coating of silicon nitride, borosilicate glass, or phosphosilicate glass on the surface of a semiconductor substrate, (b) applying a photosensiti... | 01/27/1976 |
| 3933434 | High temperature chemical reactor A high temperature reactor comprises a tube which defines a reactor chamber; means for introducing the inert fluid into the reactor tube to provide a protective blanket for the inside surface of the tube; means for introducing reactants into the chamber, ... | 01/20/1976 |
