Assignee
ASAHI SEIMITSU KK
JP·43 granted patents·2 pending applications·594 citations·filing 1976–2002
Top patents by PatentIndex Score
45 records- 0194USD427087SMeasurement surveying deviceASAHI SEIMITSU KK·Filed 1999·Granted Jun 27, 2000·50 cites·1 claims
- 0282US5218770ASurveying machine for construction workASAHI SEIMITSU KK·Filed 1991·Granted Jun 15, 1993·82 cites·11 claims
- 0371US6476978B2Linear-motion helicoid mechanism for CCTV cameraASAHI SEIMITSU KK·Filed 2001·Granted Nov 5, 2002·9 cites·4 claims
- 0468US5877892AFocus detecting apparatus for a telescope systemASAHI SEIMITSU KK·Filed 1997·Granted Mar 2, 1999·33 cites·30 claims
- 0567US5796517AInner focus type telescopeASAHI SEIMITSU KK·Filed 1997·Granted Aug 18, 1998·32 cites·25 claims
- 0666US6078442AND filterASAHI SEIMITSU KK·Filed 1998·Granted Jun 20, 2000·31 cites·14 claims
- 0766US5936736AFocusing method and apparatus for a surveying instrument having an AF function, and arrangement of an AF beam splitting optical system thereinASAHI SEIMITSU KK·Filed 1997·Granted Aug 10, 1999·40 cites·8 claims
- 0865US5861999ASuper wide angel lens system using an aspherical lensASAHI SEIMITSU KK·Filed 1997·Granted Jan 19, 1999·29 cites·10 claims
- 0964US6384944B1Integral transmitter-receiver optical communication apparatusASAHI SEIMITSU KK·Filed 1999·Granted May 7, 2002·35 cites·11 claims
- 1063USD411809SSurveying apparatus/instrumentsASAHI SEIMITSU KK·Filed 1998·Granted Jul 6, 1999·12 cites·1 claims
- 1163USD389418SElectronic measurement deviceASAHI SEIMITSU KK·Filed 1997·Granted Jan 20, 1998·12 cites·1 claims
- 1262US5649600ASensor mount for an excavatorASAHI SEIMITSU KK·Filed 1996·Granted Jul 22, 1997·30 cites·16 claims
- 1360USD447066SMeasurement surveying deviceASAHI SEIMITSU KK·Filed 2000·Granted Aug 28, 2001·11 cites·1 claims
- 1457US6154255AMount shift apparatus of lens for CCTV cameraASAHI SEIMITSU KK·Filed 1997·Granted Nov 28, 2000·23 cites·3 claims
- 1553US4562477AAutomatic diaphragm control device for use with CCTV cameraASAHI SEIMITSU KK·Filed 1984·Granted Dec 31, 1985·11 cites·6 claims
- 1652US5721969AMechanism for driving a blur correcting lens in a blurred image correcting apparatus of a cameraASAHI SEIMITSU KK·Filed 1996·Granted Feb 24, 1998·17 cites·15 claims
- 1752US4492031AVernier device of the digital display type for a universal parallel rulerASAHI SEIMITSU KK·Filed 1982·Granted Jan 8, 1985·10 cites·8 claims
- 1850US4651216ARemoto-controllable automatic diaphragm control device for use with CCTV cameraASAHI SEIMITSU KK·Filed 1984·Granted Mar 17, 1987·9 cites·8 claims
- 1949US5668664AColor separation prism assembly for C-mount cameraASAHI SEIMITSU KK·Filed 1996·Granted Sep 16, 1997·17 cites·2 claims
- 2049US4315371APreset brake device for line drawing machine, drafting machine or likeASAHI SEIMITSU KK·Filed 1980·Granted Feb 16, 1982·16 cites·9 claims
- 2147US4472743AAutomatic diaphragm control device for a closed circuit television cameraASAHI SEIMITSU KK·Filed 1982·Granted Sep 18, 1984·8 cites·16 claims
- 2245US4562476AAutomatic diaphragm control device for use IWT CCTV cameraASAHI SEIMITSU KK·Filed 1984·Granted Dec 31, 1985·7 cites·5 claims
- 2343US4270277AUniversal parallel ruler with converted display of displacementASAHI SEIMITSU KK·Filed 1979·Granted Jun 2, 1981·8 cites·3 claims
- 2442US4451851AAutomatic diaphragm control device for a closed circuit television cameraASAHI SEIMITSU KK·Filed 1982·Granted May 29, 1984·6 cites·9 claims
- 2542US4268969AUniversal parallel ruler including scale setting deviceASAHI SEIMITSU KK·Filed 1979·Granted May 26, 1981·7 cites·12 claims
- 2638US4221056AUniversal parallel ruler with converted display of displacementASAHI SEIMITSU KK·Filed 1979·Granted Sep 9, 1980·6 cites·3 claims
- 2737US4737855AAutomatic diaphragm control device for TV camera objectiveASAHI SEIMITSU KK·Filed 1986·Granted Apr 12, 1988·5 cites·6 claims
- 2837US4681438AAutomatic compensator for compensating collimation error due to two-directional inclination in surveying instrumentsASAHI SEIMITSU KK·Filed 1985·Granted Jul 21, 1987·5 cites·4 claims
- 2936US4547808APhotometric circuit incorporated in objective provided with automatic diaphragm for closed circuit television (CCTV) cameraASAHI SEIMITSU KK·Filed 1983·Granted Oct 15, 1985·4 cites·3 claims
- 3034US2002163585A1Surveillance camera system and photographing lens system thereofASAHI SEIMITSU KK·Filed 2002·Application pending·0 cites
- 3134US2002054764A1Automatic aperture control circuit for automatic diaphragm lens of CCTV cameraASAHI SEIMITSU KK·Filed 2001·Application pending·0 cites
- 3233US4542410AAutomatic diaphragm control device of objective provided with automatic diaphragm for closed circuit television (CCTV) cameraASAHI SEIMITSU KK·Filed 1983·Granted Sep 17, 1985·3 cites·4 claims
- 3333US4206551AUniversal parallel ruler for three-dimensional drawingASAHI SEIMITSU KK·Filed 1978·Granted Jun 10, 1980·5 cites·10 claims
- 3432US4755759ATemperature compensating method in automatic diaphragm control amplifier used with objective for CCTV cameraASAHI SEIMITSU KK·Filed 1986·Granted Jul 5, 1988·2 cites·8 claims
- 3532US4717960AAutomatic diaphragm control device of variable photometry type used in objective for television cameraASAHI SEIMITSU KK·Filed 1986·Granted Jan 5, 1988·3 cites·5 claims
- 3632US4453185AAutomatic diaphragm control device for a closed circuit television cameraASAHI SEIMITSU KK·Filed 1982·Granted Jun 5, 1984·3 cites·12 claims
- 3730US4837938AScale balancing device in drawing machineASAHI SEIMITSU KK·Filed 1987·Granted Jun 13, 1989·0 cites·19 claims
- 3829US6141144AOptical axis correcting systemASAHI SEIMITSU KK·Filed 1999·Granted Oct 31, 2000·1 cites·7 claims
- 3929US5453879ALens barrel with biasing member positioned between two annular membersASAHI SEIMITSU KK·Filed 1993·Granted Sep 26, 1995·2 cites·20 claims
- 4028US6118242ATravel-limit circuit having a direct current motor for a lensASAHI SEIMITSU KK·Filed 1998·Granted Sep 12, 2000·3 cites·16 claims
- 4128US4048725AFeed index device in universal parallel ruler or the likeASAHI SEIMITSU KK·Filed 1976·Granted Sep 20, 1977·3 cites·11 claims
- 4226US4483081AHead supporting device for universal parallel rulerASAHI SEIMITSU KK·Filed 1982·Granted Nov 20, 1984·1 cites·6 claims
- 4325US5500772ALens barrel for different kinds of TV camerasASAHI SEIMITSU KK·Filed 1994·Granted Mar 19, 1996·1 cites·17 claims
- 4425US4233751AUniversal parallel ruler for three-dimensional drawingASAHI SEIMITSU KK·Filed 1979·Granted Nov 18, 1980·1 cites·14 claims
- 4512US4333245AHead supporting device for universal parallel rulerASAHI SEIMITSU KK·Filed 1980·Granted Jun 8, 1982·1 cites·5 claims
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