Pfaff Haushaltmaschinen GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
D05B SEWING 220

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5361714 Sewing machine with electronic control deviceSep 14, 93Nov 08, 94[D05B]
5269240 Overcast sewing machine for forming a multiple-thread overcast seamFeb 06, 91Dec 14, 93[D05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5310968 Digitizing deviceExpiredFeb 06, 92May 10, 94[G08C]
5195442 Process and sewing machine for producing sewing patternsExpiredAug 29, 91Mar 23, 93[D05B]
4761591 RPM regulation of an electromotorExpiredMar 18, 87Aug 02, 88[H02P]
4751888 Pulse generator for a sewing machine driveExpiredJan 13, 87Jun 21, 88[D05B, G01D]
4638752 Sewing machine for producing a stitch patternExpiredOct 01, 85Jan 27, 87[D05B]
4633796 Sewing machine material feederExpiredAug 23, 85Jan 06, 87[D05B]
4625667 Sewing machine with a step motor for feed controlExpiredMay 30, 84Dec 02, 86[D05B]
4527496 Sewing machine with a spooling mechanismExpiredFeb 16, 84Jul 09, 85[D05B]
4492909 Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machineExpiredMar 22, 82Jan 08, 85[H02K]
4479077 Sewing machine with a universal motorExpiredJul 22, 83Oct 23, 84[H02K, H02P]
4432297 Low thread supply monitor in a sewing machineExpiredApr 16, 81Feb 21, 84[D05B]
4417187 Circuit for controlling the speed of a motorExpiredNov 23, 81Nov 22, 83[H02P]
4404509 Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machineExpiredSep 08, 80Sep 13, 83[G05B]
4317032 Pulse generator for variable-speed drivesExpiredNov 07, 79Feb 23, 82[G01D]
4283666 Speed control device for a home sewing machineExpiredSep 17, 79Aug 11, 81[H05D]
4253715 Sewing machine console having a lowering deviceExpiredMar 02, 79Mar 03, 81[A47B]

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