Assignee
COMPUTERVISION CORP
24 patents
Top patents by PatentIndex Score
US4328553AMay 4, 1982
Method and apparatus for targetless wafer alignment
COMPUTERVISION CORP183 citations93
US5847956ADec 8, 1998
Automatic trimming of geometric objects in CAD/CAM systems
COMPUTERVISION CORP61 citations91
US6308144B1Oct 23, 2001
Method and apparatus for providing three-dimensional model associativity
COMPUTERVISION CORP135 citations89
US3972424AAug 3, 1976
Automatic wafer loading and pre-alignment system
COMPUTERVISION CORP36 citations89
US5519833AMay 21, 1996
Distributed data processing system providing a distributed stream software environment to enable application on a first system to use driver on a second system
COMPUTERVISION CORP29 citations86
US5513316AApr 30, 1996
Method and apparatus for exercising an integrated software system
COMPUTERVISION CORP21 citations86
US4803306AFeb 7, 1989
Electromagnetic shielding clip
COMPUTERVISION CORP53 citations86
US4408874AOct 11, 1983
Projection aligner with specific means for bending mirror
COMPUTERVISION CORP47 citations86
US5297053AMar 22, 1994
Method and apparatus for deferred package assignment for components of an electronic circuit for a printed circuit board
COMPUTERVISION CORP60 citations85
US5850535ADec 15, 1998
Roll-back during regeneration on a computer-aided design system
COMPUTERVISION CORP56 citations84
US5577176ANov 19, 1996
Method and apparatus for displaying a cursor along a two dimensional representation of a computer generated three dimensional surface
COMPUTERVISION CORP24 citations84
US5561747AOct 1, 1996
Boundary evaluation in non-manifold environment
COMPUTERVISION CORP41 citations83
US5506950AApr 9, 1996
Method and apparatus for producing a three dimensional representation of a wire harness into a two dimensional presentation
COMPUTERVISION CORP53 citations82
US4091316AMay 23, 1978
Method and apparatus for damping stepper motors
COMPUTERVISION CORP27 citations82
US3955163AMay 4, 1976
Method of positioning a semiconductor wafer for contact printing
COMPUTERVISION CORP50 citations81
US5655063AAug 5, 1997
Topology based tolerancing for geometric modeling operations
COMPUTERVISION CORP20 citations77
US4133918AJan 9, 1979
Method of marking semiconductors
COMPUTERVISION CORP22 citations76
US4446412AMay 1, 1984
Method and apparatus for controlling stepper motors
COMPUTERVISION CORP22 citations75
US4265542AMay 5, 1981
Apparatus and method for fine alignment of a photomask to a semiconductor wafer
COMPUTERVISION CORP20 citations75
US3969004AJul 13, 1976
Air bearing piston assembly for semiconductor mask-to-wafer aligner
COMPUTERVISION CORP19 citations75
US3941486AMar 2, 1976
Wire bonder
COMPUTERVISION CORP20 citations75
US4506298AMar 19, 1985
Method and apparatus for displaying objects on an interlaced raster scan television screen
COMPUTERVISION CORP12 citations72
US4376580AMar 15, 1983
Projection aligner with bending mirror
COMPUTERVISION CORP9 citations66
US4244012AJan 6, 1981
Lamp holder for projection aligner
COMPUTERVISION CORP8 citations61