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Class Information
Number: 219/121.75
Name: Electric heating > Metal heating (e.g., resistance heating) > By arc > Using laser > Shaping > With lens
Description: Subject matter wherein lenses are used to focus the coherent light beam.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
4896944 Method and apparatus for trepanning workpieces Jan. 30, 1990
4874920 Electronic device manufacturing methods Oct. 17, 1989
4871897 Nozzle for laser processing Oct. 3, 1989
4868361 Coupling device for high power laser beam transmitting optical fibers Sep. 19, 1989
4847462 Method and apparatus for making fluorocarbon film plastic bags using a laser Jul. 11, 1989
4838631 Laser beam directing system Jun. 13, 1989
4827098 Flexible laser welding head for sleeve-to-tube welding May. 2, 1989
4825034 Microbeam laser machine for acting on objects having thin layers of material Apr. 25, 1989
4808789 Diode-pumped-laser instrumentation system Feb. 28, 1989
4806724 Laser beam machining device Feb. 21, 1989
4793694 Method and apparatus for laser beam homogenization Dec. 27, 1988
4789770 Controlled depth laser drilling system Dec. 6, 1988
4782787 Apparatus for laser-induced chemical vapor deposition Nov. 8, 1988
4739148 Apparatus for improving surface quality of rotary machine parts Apr. 19, 1988
4718418 Apparatus for ophthalmological surgery Jan. 12, 1988
4713518 Electronic device manufacturing methods Dec. 15, 1987
4705367 Variable focal length optical system having a constant diameter focal spot Nov. 10, 1987
4703166 System for maintaining the optical alignment between stationary and moving equipment in deep-UV lithography Oct. 27, 1987
4695697 Fiber tip monitoring and protection assembly Sep. 22, 1987
4694136 Laser welding of a sleeve within a tube Sep. 15, 1987
4694137 Laser welding head for sleeve-to-tube welding Sep. 15, 1987
4684780 Laser beam focusing head Aug. 4, 1987
4671273 Laser hand piece, for use in opthalmic, plastic, and ear, nose, and throat surgery Jun. 9, 1987
4648400 Ophthalmic surgery system Mar. 10, 1987
4638488 Fine grains producing apparatus Jan. 20, 1987
4636609 Process for joining different kinds of synthetic resins Jan. 13, 1987
4636043 Laser beam scanning device and marking system Jan. 13, 1987
4634831 Laser-machining apparatus Jan. 6, 1987
4633872 Laser optical delivery apparatus Jan. 6, 1987
4618759 Beam position control for a laser machine device Oct. 21, 1986
4592353 Medical and surgical laser probe Jun. 3, 1986
4585919 Piercing device for piercing ventilating holes in cigarettes or similar smoking commodities Apr. 29, 1986
4573467 Optical coupling device for biomicroscope Mar. 4, 1986
4572941 Method of and installation for spot-welding by laser beam Feb. 25, 1986
4564739 Apparatus for labeling parts with a laser Jan. 14, 1986
4560855 Method for joining of articles by energy beam and apparatus for controlling said method Dec. 24, 1985
4499362 Rotary beam chopper with continuously variable duty cycle Feb. 12, 1985
4499361 Laser beam interrupter and divider Feb. 12, 1985
4480168 Laser-surface coupler Oct. 30, 1984
4480169 Non contact laser engraving apparatus Oct. 30, 1984
4469098 Apparatus for and method of utilizing energy to excise pathological tissue Sep. 4, 1984
4468551 Laser treatment of electrical steel and optical scanning assembly therefor Aug. 28, 1984
4456812 Laser treatment of electrical steel Jun. 26, 1984
4430548 Laser apparatus and process for cutting paper Feb. 7, 1984
4424435 Low expansion laser welding arrangement Jan. 3, 1984
4410785 Method and apparatus for perforation of sheet material by laser Oct. 18, 1983
4404454 Light energy perforation apparatus and system Sep. 13, 1983
4404452 Optical perforating apparatus and system Sep. 13, 1983
4402574 Method and apparatus for refracting a laser beam Sep. 6, 1983
4358659 Method and apparatus for focusing a laser beam on an integrated circuit Nov. 9, 1982

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