| 1918 | RIGID TYPE DISC | Clutch disc with the plate and spline hub secured by rivets |
| 1949 | TURN SIGNAL | Arrow type turn indicator for trucks and business |
| 1952 | ANTI VIBRATION DISC | Anti-vibration disc with a plate spring damper mechanism |
| 1958 | COIL SPRING TYPE CLUTCH COVER | Clutch cover employing a coil spring to provide pressure against the disc |
| 1963 | "KAZUMATIC" | Semi-automatic control device employing a manual clutch |
| 1968 | DIAPHRAGM SPRING TYPE CLUTCH COVER | Clutch cover employing a disc-shaped diaphragm spring to achieve a thinner design than a coil spring type clutch cover |
| 1969 | DAMPER DISC | Damper disc for construction machinery employing a disc friction damper to reduce torque fluctuation |
| 1970 | AUTOMATIC TRANSMISSION PARTS | Automatic transmission parts that directly affect the feeling of shifting |
| 1972 | OIL SPRAY CLUTCH | Wet type main clutch employing a forced-oil cooling system |
| 1973 | MARINE GEAR | Easily operable and highly durable hydraulic marine gear for low-capacity engines for small ships |
| 1975 | TORQUE CONVERTER | Sheet metal torque converter for forklifts |
| 1976 | TRANSMISSION FOR FORKLIFTS | Power shift transmission incorporating torque converter, valve, and hydraulic clutch technology |
| 1979 | AXLE | Powertrain component comprised of a differential housing with an axle gear on each side |
| 1980 | SILENT DISC | Clutch disc with multilevel return characteristics to absorb transmission noise and vibration |
| 1981 | CLUTCH COVER (DST TYPE) | Compact clutch cover employing tags in place of stud pins to hold the diaphragm spring |
| 1985 | DUAL CLUTCH | Unified clutch for transferring power both for movement and work functions |
| 1987 | PULL TYPE CLUTCH COVER | Pull type to reduce required pedal depression force and improve clutch shifting (disengagement) |
| 1990 | RETARDER | Hydraulic parking brake retarder which provides powerful braking force |
| 1991 | HYDRODAMP SYSTEM | System employing a split flywheel with a viscous damping mechanism to provide exceptional vibration absorption |
| 1992 | PATM | Automatic transmission for mid-size vehicles emphasizing practicality |
| 1992 | SUPER ELLIPTICAL TYPE TORQUE CONVERTER | Compact, lightweight torque converter 17% shorter in the axial direction and 12% lighter than a conventional round type |
| 1994 | UNITY CLUTCH | Clutch with markedly fewer parts for lower cost and improved performance |
| 1995 | MOTORSPORTS CLUTCH | Clutch employing a metallic facing for increased durability and improved shifting performance |
| 1998 | WAD (WIDE ANGLE DAMPER) | Exceptional noise and vibration absorption achieved by eliminating the stop pins, markedly widening the angle of the torsion spring, and employing an AC/DC hiss mechanism |
| 1999 | FORWARD REVERSE UNIT | Worlds smallest, lightest, forward-reverse unit (FRU) for continuously variable transmission (CVT), featuring a compact arrangement of a direct clutch and a planetary gear |
