1
Thorbjoern R Fredriksen, Philippe Villers: Method and apparatus for targetless wafer alignment. Computervision Corporation, Richard J Birch, May 4, 1982: US04328553 (101 worldwide citation)

A method and apparatus for targetless X, Y and .theta. alignment of a semiconductor wafer having thereon a large number of identical microcircuits or dies that are arranged in a pattern to form rows and columns separated by scribe lines or "streets." The orientation of the wafer is defined by the lo ...


2
Jason P Bronfeld, Girish Haran, Serena Marie Doyle: Method and apparatus for providing three-dimensional model associativity. Computervision Corporation, Lahive & Cockfield, October 23, 2001: US06308144 (76 worldwide citation)

A CAD/CAM system provides a positive indication to a user that the user has located a cursor so that an object on a two-dimensional sketcher plane has been aligned with a point of interest within three-dimensional model geometry, even though the point of interest may not be within the two-dimensiona ...


3
Levy Kenneth, Corbin David, Fleming Alan J, Friedman David, Fryklund Gilbert G, Parker Vance, Schliemann Gerd: Automatic wafer loading and pre-alignment system. The Computervision Corporation, Birch Richard J, September 2, 1975: US3902615 (71 worldwide citation)

An automatic wafer loading and pre-alignment system for integrated circuit wafer-mask Aligners. A belt feed track system is employed to transport wafers from a 'send' wafer storage carrier to a wafer pre-alignment station. The wafer is mechanically pre-aligned with respect to the wafer chuck of the ...


4
Jason P Bronfeld, Peter Revelas: Automatic trimming of geometric objects in CAD/CAM systems. Computervision Corporation, Wolf Greenfield & Sacks PC, December 8, 1998: US05847956 (42 worldwide citation)

A method and apparatus for automatically trimming a geometry that is formed by the spatial intersection of geometric model primitives created on a computer aided design (CAD) system. In one embodiment of the present invention, an automatically trimmed representation of the geometry is determined whi ...


5
Gennady D Maystrovsky, Timothy Friedman: Roll-back during regeneration on a computer-aided design system. Computervision Corporation, Wolf Greenfield & Sacks P C, December 15, 1998: US05850535 (34 worldwide citation)

A method and apparatus that keeps information on all entities that are created when a model is built in a CAD system, including an indication of which command causes each entity to be added to or taken from the model. From this information, the system can determine the state of the model at any give ...


6
Walter Thomas Novak: Method of positioning a semiconductor wafer for contact printing. The Computervision Corporation, Richard J Birch, May 4, 1976: US03955163 (34 worldwide citation)

A non-planar semiconductor wafer chuck having a plurality of outwardly extending channels in the chuck face and a plurality of vacuum/pressure ports extending through the chuck and communicating with the face thereof. When a semiconductor wafer is positioned with respect to an overlying photomask by ...


7
Richard G Malmquist: Electromagnetic shielding clip. Computervision Corporation, Robert M Asher, February 7, 1989: US04803306 (30 worldwide citation)

An electromagnetic shielding clip made from a metallic strip having a U-shaped attaching portion with a notch formed on each side of the attaching portion. The metallic strip has a bent portion at the top of each side of the U-shaped attaching portion. A contact wing extends from at least one of the ...


8
Mark D Pease, William Anderson Jr: Method and apparatus for deferred package assignment for components of an electronic circuit for a printed circuit board. Computervision Corporation, Wolf Greenfield & Sacks, March 22, 1994: US05297053 (30 worldwide citation)

A computer aided design tool provides a user with the capability of generating a design implementation for electronic circuitry. In this system the user generates a design schematic specifying a functional description of a design for electronic circuitry without the need for specifying packaging inf ...


9
Villers Philippe: Method for automating the production of engineering documentation utilizing an integrated digital data base representation of the documentation. The Computervision Corporation, Birch Richard J, December 30, 1975: US3930237 (27 worldwide citation)

A method for automating the production of engineering documentation having at least one graphical entity thereon. The method utilizes an integrated digital data base representation of the engineering document. A symbolic identifier is placed on the document with respect to each graphical entity. The ...


10
William Zinky, Larry Rosenberg: Projection aligner with specific means for bending mirror. Computervision Corporation, Robert G Slick, October 11, 1983: US04408874 (23 worldwide citation)

A projection aligner is provided wherein anamorphic metric distortion can be introduced in the projection image by employing a bending mirror that makes a slight change in magnification along one axis of the image. In one embodiment of the invention a pneumatic bending mechanism is employed and in a ...