Pilot Man-Nen-Hitsu Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C25D PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING 150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE31901 Continuous electrolytical treatment of aluminum or its alloysJun 24, 81May 28, 85[C25D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4863526 Fine crystalline thin wire of cobalt base alloy and process for producing the sameExpiredJul 10, 87Sep 05, 89[C22F]
4840837 Heat transfer mediumExpiredJul 01, 88Jun 20, 89[B41M]
4838715 Ink ribbon cassetteExpiredFeb 24, 88Jun 13, 89[B41J]
4760104 Erasable ball-point pen inkExpiredMay 08, 85Jul 26, 88[C09D]
4750003 Magnetic display unitExpiredAug 31, 87Jun 07, 88[G01D]
4707593 Visible image magnetic cardExpiredMay 23, 86Nov 17, 87[G06K]
4687791 Erasable ball-point pen inkExpiredOct 31, 83Aug 18, 87[C09D]
4669906 Ball-point pen venting arrangementExpiredSep 27, 85Jun 02, 87[B43K]
4659439 Surface treatment of aluminum or aluminum alloysExpiredMar 21, 85Apr 21, 87[C25D]
4646107 XY plotter apparatusExpiredJan 02, 86Feb 24, 87[G11B, G01D]
4643684 Magnetic display panelExpiredFeb 27, 81Feb 17, 87[B43L]
4629748 Erasable ball-point pen inkExpiredMay 29, 85Dec 16, 86[C09D]
4606769 Erasable black ink composition for ball-point pensExpiredNov 06, 84Aug 19, 86[C09D]
4597829 Stencil, stencil material kit and stencil duplicator kit containing the sameExpiredMar 07, 85Jul 01, 86[C03C, B29C, B44C]
4596903 Pickup device for picking up vibration transmitted through bonesExpiredApr 27, 84Jun 24, 86[H04R]
4569283 Stencil material set and stencil duplicator setExpiredApr 19, 84Feb 11, 86[B41C]
4563397 Process for producing a magnetic recording material and article producedExpiredSep 11, 84Jan 07, 86[C25D, G11B]
4560298 Opening and closing device for retractable nib fountain penExpiredNov 12, 82Dec 24, 85[B43K]
4556336 Pen core for writing instrumentExpiredJun 01, 84Dec 03, 85[B43K]
4550660 StencilExpiredOct 11, 83Nov 05, 85[B41N]

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