Okuma Machinery Works Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B23G THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH 18

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5104268 Screw cutting machineSep 09, 91Apr 14, 92[B23G]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5142210 Abnormal state detecting apparatus of a machine toolExpiredJan 04, 91Aug 25, 92[G05B]
5121039 Index control apparatus for tool rest of NC latheExpiredOct 31, 90Jun 09, 92[B23Q, G05B]
5105135 Feedback controller for NC controlled machine toolsExpiredOct 31, 90Apr 14, 92[G05B]
5088244 Machining method for member included screw-shaped portionExpiredMay 15, 91Feb 18, 92[B24B]
5076744 Screw cutting machineExpiredSep 10, 90Dec 31, 91[B23G]
5025914 Feed-screw support structureExpiredAug 28, 89Jun 25, 91[B65G]
4986704 Tool mounting apparatusExpiredNov 22, 88Jan 22, 91[B23B, B23C]
4901541 Needle selector for knitting machineExpiredApr 15, 88Feb 20, 90[D04B]
4760581 Laser oscillating apparatusExpiredMay 08, 86Jul 26, 88[H01S]
4755720 Discharge electrode with corrosion-proof structureExpiredMar 20, 86Jul 05, 88[H01J]
4734916 Laser oscillating apparatusExpiredMar 20, 86Mar 29, 88[H01S]
4730332 Laser oscillating apparatusExpiredMar 20, 86Mar 08, 88[H01S]
4726032 Comb-shaped polarizing deviceExpiredMar 20, 86Feb 16, 88[H01S]
4723256 Optical resonator for laser oscillating apparatusExpiredMar 20, 86Feb 02, 88[H01S]
4698551 Discharge electrode for a gas discharge deviceExpiredMar 20, 86Oct 06, 87[H01J, H01S]
4534803 Method of cleaning machined surface and chip removing toolExpiredOct 20, 83Aug 13, 85[B08B]
4505020 Tool replacing deviceExpiredJul 27, 83Mar 19, 85[B23Q]
D265319 Combined lathe and swarf cover thereforExpiredOct 25, 77Jul 06, 82[D150]
4296657 Method and apparatus for positioning work on a numerically controlled latheExpiredMar 18, 80Oct 27, 81[B23B]
4255682 Multipolar resolverExpiredApr 30, 79Mar 10, 81[H02K]

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