ZF TRANSMISSION TECHNOLOGIES, L.L.C.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16H GEARING298
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7771301 Pressure supply to a continuously adjustable automatic transmission in particular a clasping transmissionMay 10, 06Aug 10, 10[F16H]
7534186 Reversing gearset of a continuously variable transmission in particular a continuously variable belt transmissionMay 10, 06May 19, 09[F16H]
5645406 Transmission assembly with positive-displacement pump with suction throttle driven by a hydrodynamic converterMay 27, 94Jul 08, 97[F04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0087,380 Variator in a four wheel driveAbandonedOct 24, 03Apr 28, 05[B60K]
6723015 Sliding link beltExpiredMay 01, 02Apr 20, 04[F16G]
6688383 Cooling a control device of the gearbox of a motor vehicleExpiredMay 31, 01Feb 10, 04[F28F]
6688999 Method and device for controlling a drive-line including a CVTExpiredMar 12, 02Feb 10, 04[F16H]
6684142 Slip protection method for a belt-type variator of a CVTExpiredMar 15, 00Jan 27, 04[B60K, G06F]
6679109 Acoustic recognition of variator slip of a continuously variable transmissionExpiredNov 29, 01Jan 20, 04[G01M]
6671602 Method for manually stipulating the transmission ratio of a continuously variable transmission (CVT)ExpiredFeb 20, 02Dec 30, 03[B60K]
6655927 Radial piston pump with piston arrangement for controlling inlet/exit flowExpiredJan 18, 02Dec 02, 03[F04B]
6652403 VariatorExpiredDec 13, 01Nov 25, 03[F16G]
6652404 Device for assembling a push V-beltExpiredNov 08, 01Nov 25, 03[B23P, F16G]
6626647 Radial piston pumpExpiredJan 18, 02Sep 30, 03[F04B]
6626777 Device for controlling an automatic gearboxExpiredMay 03, 01Sep 30, 03[F16H]
6597977 Method for adjusting the ratio of transmission in a continuous variable transmissionExpiredMay 03, 01Jul 22, 03[B60K, G06F]
6591177 Method of controlling a CVT automatic transmissionExpiredOct 26, 00Jul 08, 03[F16H]
6582203 Radial piston pumpExpiredMay 10, 01Jun 24, 03[F04B]
6537040 Radial piston pumpExpiredMay 10, 01Mar 25, 03[F04B]
6537176 Arrangement for operating an automotive CVTExpiredMar 27, 01Mar 25, 03[F16H]
6527668 Hydraulic systemExpiredJul 06, 01Mar 04, 03[F16H]
6524210 Automatic transmissionExpiredApr 20, 00Feb 25, 03[B60K, F16D, F16H]
6522965 Method for setting a multiplication of a continuously variable automatic transmission equipped with a variatorExpiredJan 11, 01Feb 18, 03[B60K]

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