COPAL ELECTRONICS CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 268
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5997180 Circumferential flow type dynamic pressure bearingMay 19, 98Dec 07, 99[F16C]
5746515 Dynamic-pressure gas bearingJan 31, 97May 05, 98[F16C]
5548437 Optical deflector provided with scanning mirror rotatable around shaft by dynamic air pressureDec 15, 94Aug 20, 96[G02B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6285969 Use of single scatter electron monte carlo transport for medical radiation sciencesExpiredMay 22, 98Sep 04, 01[G06N, G05B]
5010214 Rotary switchExpiredJul 07, 89Apr 23, 91[H01H]
5008498 Rotary switchExpiredJan 05, 90Apr 16, 91[H01H]
4894500 Rotary selector switchExpiredDec 01, 87Jan 16, 90[H01H]
4839627 Variable resistorExpiredDec 31, 87Jun 13, 89[H01C]
4832277 Fishing reelExpiredJul 08, 87May 23, 89[A01K]
4807239 Drive and control circuit for laser diodeExpiredApr 01, 87Feb 21, 89[H01S]
4799628 Level winder for double-bearing fishing reelExpiredJun 16, 87Jan 24, 89[A01K]
4787723 Ultra-wide angle F-.theta. lens systemExpiredOct 15, 86Nov 29, 88[G02B]
4788393 DIP rotary code switchExpiredJan 06, 87Nov 29, 88[H01H]
4771964 Fishing reelExpiredJul 29, 87Sep 20, 88[A01K]
4712084 PotentiometerExpiredMar 19, 86Dec 08, 87[H01C]
4627303 Variable resistance deviceExpiredAug 03, 84Dec 09, 86[H01C, F16H]

Top Inventors for This Owner

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