ASAHI SEIMITSU KABUSHIKI KAISHA

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 9196
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS297
 
  
 
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
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 2240
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7330214 Diaphragm apparatus of lens for CCTV cameraJul 19, 01Feb 12, 08[G03B]
7068318 Diaphragm control apparatus for lens of CCTV cameraNov 29, 00Jun 27, 06[H04N]
6476978 Linear-motion helicoid mechanism for CCTV cameraMay 22, 01Nov 05, 02[G02B]
D447066 Measurement surveying deviceOct 19, 00Aug 28, 01[1004]
6154255 Mount shift apparatus of lens for CCTV cameraJun 03, 97Nov 28, 00[H04N, G02B, G03B]
6118242 Travel-limit circuit having a direct current motor for a lensDec 22, 98Sep 12, 00[G05B]
D427087 Measurement surveying deviceJun 21, 99Jun 27, 00[1004]
6078442 ND filterApr 22, 98Jun 20, 00[G02B]
D411809 Surveying apparatus/instrumentsOct 15, 98Jul 06, 99[1004]
5861999 Super wide angel lens system using an aspherical lensAug 21, 97Jan 19, 99[G02B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7079186 Diaphragm device of a television camera lens for a CCTV surveillance cameraExpiredOct 09, 01Jul 18, 06[H04N]
6945657 Surveying instrumentExpiredOct 18, 01Sep 20, 05[G02B]
6907133 Automatic surveying systemExpiredJul 09, 01Jun 14, 05[G06K]
6480266 Autofocus distance-measuring optical systemExpiredMar 07, 01Nov 12, 02[G01C]
2002/0163,585 Surveillance camera system and photographing lens system thereofAbandonedFeb 12, 02Nov 07, 02[H04N]
2002/0054,764 Automatic aperture control circuit for automatic diaphragm lens of CCTV cameraAbandonedOct 30, 01May 09, 02[G03B]
6384405 Incremental rotary encoderExpiredApr 27, 00May 07, 02[G01B, G01D]
6384944 Integral transmitter-receiver optical communication apparatusExpiredJul 19, 99May 07, 02[H04B]
6304079 Incremental rotary encoder for measuring horizontal or vertical anglesExpiredApr 27, 00Oct 16, 01[G01B]
6141144 Optical axis correcting systemExpiredAug 04, 99Oct 31, 00[G02B]
5936736 Focusing method and apparatus for a surveying instrument having an AF function, and arrangement of an AF beam splitting optical system thereinExpiredMar 27, 97Aug 10, 99[G02B, G01B]
5877892 Focus detecting apparatus for a telescope systemExpiredApr 01, 97Mar 02, 99[G02B, G01B]
5721969 Mechanism for driving a blur correcting lens in a blurred image correcting apparatus of a cameraExpiredJul 10, 96Feb 24, 98[G03B]
5715101 Focusing apparatus for a surveying instrumentExpiredApr 24, 96Feb 03, 98[G02B]
5668664 Color separation prism assembly for C-mount cameraExpiredMay 24, 96Sep 16, 97[G02B]
5602682 Aberration correcting plate for interchangeable lensExpiredJul 26, 94Feb 11, 97[G02B]
5500772 Lens barrel for different kinds of TV camerasExpiredJul 06, 94Mar 19, 96[G02B]
5453879 Lens barrel with biasing member positioned between two annular membersExpiredNov 01, 93Sep 26, 95[G02B]
5160956 Lens barrel with screw mountExpiredJan 04, 91Nov 03, 92[G03B]
5032014 Datum beam projecting apparatus for use with surveying equipmentExpiredOct 27, 89Jul 16, 91[G02B]

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