Hirakawa Kogyo Sha Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B65H HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES277
 
  
 
G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 295
 
  
 
G03D APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS 115

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5778275 Processing device for photographic materials and automatic developing machine using the sameSep 23, 96Jul 07, 98[G03D]
5636007 Method of reproducing images of plurality of copy pages on single plateAug 30, 93Jun 03, 97[G03B]
5610682 Photographing method and photosensitive material printing apparatus utilizing the sameJan 03, 95Mar 11, 97[G03B]
5258045 Route selector for sheetlike articleFeb 27, 92Nov 02, 93[B65H]
5152522 Sheetlike article conveying roller assemblyApr 30, 91Oct 06, 92[B65H]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6176634 Machine plate fastening means for offset press and joint plate for fixing said fastening meansExpiredOct 20, 98Jan 23, 01[B41F]
6058838 Machine plate fastening means, plate cylinder fitted with said fastening means, and offset printing machine equipped with said plate cylinderExpiredApr 15, 98May 09, 00[B41F]
5124738 Apparatus for correcting focal point according to lens temperatureExpiredAug 23, 90Jun 23, 92[G03B]
5022300 Jig for use with punch pressExpiredNov 09, 89Jun 11, 91[B23Q, B26D]
4989033 Process cameraExpiredNov 01, 89Jan 29, 91[G03B]
4862223 Process camera for reproducing multiple images on single filmExpiredJun 15, 88Aug 29, 89[G03B]

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