Computervision Corporation
24Patents
0Active
24Granted
36Portfolio score
Filing activity: Jun 3, 1974 → Sep 26, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4328553A | Method and apparatus for targetless wafer alignment | Performing Operations; Transporting | 122 | Expired |
| US6308144A | Method and apparatus for providing three-dimensional model associativity | Physics | 97 | Expired |
| US5847956A | Automatic trimming of geometric objects in CAD/CAM systems | Physics | 44 | Expired |
| US5297053A | Method and apparatus for deferred package assignment for components of an electronic circuit for a printed circuit board | Physics | 39 | Expired |
| US3955163A | Method of positioning a semiconductor wafer for contact printing | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5850535A | Roll-back during regeneration on a computer-aided design system | Physics | 35 | Expired |
| US5519833A | Distributed data processing system providing a distributed stream software environment to enable application on a first system to use driver on a second system | Physics | 28 | Expired |
| US5561747A | Boundary evaluation in non-manifold environment | Physics | 27 | Expired |
| US4408874A | Projection aligner with specific means for bending mirror | Physics | 26 | Expired |
| US4803306A | Electromagnetic shielding clip | Electricity | 23 | Expired |
| US3972424A | Automatic wafer loading and pre-alignment system | Performing Operations; Transporting | 23 | Expired |
| US4091316A | Method and apparatus for damping stepper motors | Electricity | 21 | Expired |
| US5506950A | Method and apparatus for producing a three dimensional representation of a wire harness into a two dimensional presentation | Physics | 21 | Expired |
| US4446412A | Method and apparatus for controlling stepper motors | Electricity | 17 | Expired |
| US3941486A | Wire bonder | Electricity | 16 | Expired |
| US5577176A | Method and apparatus for displaying a cursor along a two dimensional representation of a computer generated three dimensional surface | Physics | 16 | Expired |
| US4265542A | Apparatus and method for fine alignment of a photomask to a semiconductor wafer | Physics | 14 | Expired |
| US5513316A | Method and apparatus for exercising an integrated software system | Physics | 12 | Expired |
| US5655063A | Topology based tolerancing for geometric modeling operations | Physics | 12 | Expired |
| US4133918A | Method of marking semiconductors | Performing Operations; Transporting | 12 | Expired |
| US3969004A | Air bearing piston assembly for semiconductor mask-to-wafer aligner | Physics | 12 | Expired |
| US4506298A | Method and apparatus for displaying objects on an interlaced raster scan television screen | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4376580A | Projection aligner with bending mirror | Physics | 5 | Expired |
| US4244012A | Lamp holder for projection aligner | Mechanical Engineering; Lighting; Heating | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.