RICOH OPTICAL INDUSTRIES CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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 493
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 177
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204
 
  
 
G03F PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR 1103

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8641208 Refractive optics and projection display apparatusApr 01, 11Feb 04, 14[G02B, G03B]
8419191 Projection optical system, projector and image reading deviceMar 05, 08Apr 16, 13[G02B, G03B]
8087789 Projection optical system and projection display deviceDec 09, 08Jan 03, 12[G03B]
8008614 Device for detecting emission light of micro-object having means for suppressing reflected and scattered excitation lightJun 17, 09Aug 30, 11[G01J]
7195732 Method and mold for fabricating article having fine surface structureSep 22, 03Mar 27, 07[B29C]
7050238 Power combination optical system and light source moduleSep 29, 04May 23, 06[G02B]
5776639 Exposure mask, method of producing the same, exposure mask producing apparatus, and method of forming surface profile on material using exposure maskApr 08, 96Jul 07, 98[G03F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8511831 Optical device and projection-type image display apparatusExpiredApr 10, 07Aug 20, 13[G03B]
7502300 Optical pickup and optical data processing apparatusExpiredJun 29, 04Mar 10, 09[G11B]
2004/0174,596 Polarization optical device and manufacturing method thereforAbandonedMar 04, 04Sep 09, 04[H01L, G02B]
5830605 Gradation mask method of producing the same and method of forming special surface profile on material using gradation maskExpiredAug 27, 96Nov 03, 98[G03F]
4720720 Motor-driven film winder for camerasExpiredSep 18, 85Jan 19, 88[G03B]

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