BMC INDUSTRIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B24D TOOLS FOR GRINDING, BUFFING, OR SHARPENING 129

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE30494 Cutting teeth for etched abrasivesAug 09, 78Jan 27, 81[B24D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0060,867 Membrane support devices and methods of manufacturingAbandonedDec 06, 02Apr 01, 04[B01D]
6682875 Method and apparatus for imaging with fiber optic arrays on non-flat surfacesExpiredJun 18, 01Jan 27, 04[G03F]
2003/0143,469 Grade tie bar only (GTO) and graded grade tie bar only (GGTO) aperture masksAbandonedDec 02, 02Jul 31, 03[G03F]
6562249 Method utilizing a magnetic assembly during etching thin shadow masksExpiredJul 10, 01May 13, 03[C25F]
6537459 Method and apparatus for etching-manufacture of cylindrical elementsExpiredApr 20, 00Mar 25, 03[A61F]
2002/0170,878 Etching resistance of protein-based photoresist layersAbandonedMar 27, 01Nov 21, 02[C03C, C23F, B44C]
6468439 Etching of metallic composite articlesExpiredNov 01, 99Oct 22, 02[C23F, B44C]
6409930 Lamination of circuit sub-elements while assuring registrationExpiredNov 01, 99Jun 25, 02[H01B]
6365057 Circuit manufacturing using etched tri-metal mediaExpiredNov 01, 99Apr 02, 02[H05K]
5636029 Elliptical laser probe for shadow maskExpiredJul 21, 95Jun 03, 97[G01B]
5484074 Method for manufacturing a shadow maskExpiredMay 03, 94Jan 16, 96[B31D, C23F, B44C, C25F]
5387313 Etchant control systemExpiredJul 23, 93Feb 07, 95[B05B, C23F]
5382870 Stackable aperture masksExpiredSep 21, 92Jan 17, 95[H01J]
5378308 Etchant distribution apparatusExpiredNov 09, 92Jan 03, 95[C23F]
5298352 Emulsion printing plates and evacuation channelsExpiredDec 13, 91Mar 29, 94[G03F]
5236794 Emulsion printing plate relief coatingsExpiredJul 13, 92Aug 17, 93[G03F]
5149608 Emulsion printing plate relief coatingsExpiredJun 09, 89Sep 22, 92[G03F]
4743795 Multi-graded aperture masksExpiredJun 13, 86May 10, 88[H01J]
4661984 Line inspection systemExpiredAug 29, 79Apr 28, 87[G06K]
4632726 Multi-graded aperture mask methodExpiredJul 13, 84Dec 30, 86[C03C, C23F, B44C]

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