MERCOTRUST AKTIENGESELLSCHAFT, A CORP. OF LIECOTENSTEIN
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- May 05, 1987 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 2,399 Total Citation Count
- Dec 04, 1978 Earliest Filing
- 23 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Recent Publications
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4662754 Method for facilitating the alignment of a photomask with individual fields on the surfaces of a number of wafersExpiredDec 20, 85May 05, 87[G03B]
4621922 Device for the projection copying of masks onto a workpieceExpiredAug 10, 84Nov 11, 86[G03B]
4592650 Apparatus for projecting a pattern on a semiconductor substrateExpiredJan 23, 85Jun 03, 86[G03B]
4540277 Device for the projection printing of masks into a workpieceExpiredJun 24, 83Sep 10, 85[G03B]
4509852 Apparatus for the photolithographic manufacture of integrated circuit elementsExpiredAug 17, 82Apr 09, 85[G03B]
4496241 Process and device for relatively aligning the image and object surfaces in optical copying systemsExpiredMar 18, 83Jan 29, 85[G01B]
4461567 Method of and apparatus for the positioning of disk-shaped workpieces, particularly semiconductor wafersExpiredSep 28, 82Jul 24, 84[G03B]
4431304 Apparatus for the projection copying of mask patterns on a workpieceExpiredNov 25, 81Feb 14, 84[G03B]
4405229 Method of projecting printing on semiconductor substrate and workpiece including such substrateExpiredMay 20, 81Sep 20, 83[G03B]
4379831 Process for transferring a pattern onto a semiconductor diskExpiredMay 21, 81Apr 12, 83[G03C, G03B]
4376581 Method of positioning disk-shaped workpieces, preferably semiconductor wafersExpiredDec 29, 80Mar 15, 83[G03B]
4362385 Process and arrangement for copying masks on a workpiece with arrangement for correction of alignment errorsExpiredOct 14, 80Dec 07, 82[G05B, G03B, G01B]
4357100 Arrangement for projection copying masks on to a work pieceExpiredJan 02, 80Nov 02, 82[G03B]
4346164 Photolithographic method for the manufacture of integrated circuitsExpiredOct 06, 80Aug 24, 82[G03C]
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