CKD Kabushiki Kaisha

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Patent Activity in the Last 10 Years

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Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D379844 Air operated valveMar 08, 95Jun 10, 97[2301]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D377522 Gas feederExpiredAug 22, 95Jan 21, 97[]
D368130 Air operated valveExpiredMar 08, 95Mar 19, 96[]
D367516 Air operated valveExpiredMar 08, 95Feb 27, 96[]
D366928 Air operated valveExpiredMar 08, 95Feb 06, 96[]
D329434 Combined rodless fluid pressure cylinder and switch installationsExpiredMar 30, 89Sep 15, 92[]
D318713 Combined pressure regulator and filterExpiredMar 30, 89Jul 30, 91[]
D317922 Rodless cylinderExpiredMar 30, 89Jul 02, 91[]
D317644 Combined pressure regulator filter and lubricatorExpiredMar 30, 89Jun 18, 91[]
D317494 Pressure regulatorExpiredMar 30, 89Jun 11, 91[]
D317315 LubricatorExpiredMar 30, 89Jun 04, 91[]
D317346 FilterExpiredMar 30, 89Jun 04, 91[]
D307913 LubricatorExpiredJul 03, 86May 15, 90[]
4875911 Apparatus for separating gaseous mixturesExpiredJul 15, 87Oct 24, 89[B01D]
D301914 Pressure governor with filterExpiredJul 03, 86Jun 27, 89[]
D301917 Pressure governorExpiredJul 03, 86Jun 27, 89[]
4773270 Pressure gageExpiredFeb 24, 87Sep 27, 88[G01L]
4773271 Bourdon gageExpiredJan 16, 87Sep 27, 88[G01L]
4760862 Air pressure regulatorExpiredFeb 13, 87Aug 02, 88[F16K, G05D]
D295674 Air-filterExpiredJul 03, 86May 10, 88[]
4735288 Detachably attaching mechanism for cup of lubricator or filter used with air-actuated deviceExpiredJan 16, 87Apr 05, 88[F16N, F16B, F16D]

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