P

Inventor

SUMIYA KOJI

JP41 patents
⚠️ This page may combine multiple inventors who share the name “SUMIYA KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AISIN WARNER

19 patents
US4724745AFeb 16, 1988

Hydraulic servo drum for friction clutch

AISIN WARNER25 citations93
US4712635ADec 15, 1987

Control apparatus for four-wheel drive vehicle

AISIN WARNER45 citations93
US4748809AJun 7, 1988

Hydraulic servo mechanism of automatic transmission for vehicle

AISIN WARNER24 citations82
US4722251AFeb 2, 1988

Hydraulic circuit for controlling an automatic transmission

AISIN WARNER20 citations82
US4722250AFeb 2, 1988

Accumulator back pressure control apparatus for automatic transmission

AISIN WARNER24 citations82
US4890512AJan 2, 1990

Hydraulic servo for friction coupling element of automatic transmission

AISIN WARNER9 citations74
US4854195AAug 8, 1989

Hydraulic control system for vehicular automatic transmission with two accumulator control values to vary back pressure to accumulator to follow the change in engine torque

AISIN WARNER13 citations74
US4753132AJun 28, 1988

Hydraulic servo for friction coupling devices of automatic transmissions

AISIN WARNER14 citations74
US4727773AMar 1, 1988

Hydraulic circuit for controlling automatic transmission

AISIN WARNER16 citations74
US4727772AMar 1, 1988

Multistage automatic shift control apparatus

AISIN WARNER13 citations74
US4727774AMar 1, 1988

Cut-back pressure control device for multi-speed automatic transmission

AISIN WARNER15 citations74
US4714146ADec 22, 1987

Friction coupling element of automatic transmission

AISIN WARNER16 citations74
US4693353ASep 15, 1987

Support for transmission shaft and hydraulic servo drum

AISIN WARNER20 citations74
US4690037ASep 1, 1987

Hydraulic servo for friction coupling element of automatic transmission

AISIN WARNER10 citations74
US4682534AJul 28, 1987

Hydraulic servo for friction coupling element of automatic transmission

AISIN WARNER4 citations63
US4476887AOct 16, 1984

Hydraulic governor pressure generator

AISIN WARNER2 citations63
US4462279AJul 31, 1984

1-2 Shift valve for an automatic transmission

AISIN WARNER5 citations63
US4807492AFeb 28, 1989

Mechanism for supporting transmission shafts of automatic transmission apparatus

AISIN WARNER5 citations62
US4509391AApr 9, 1985

Hydraulic pressure regulating system for a vehicle automatic transmission

AISIN WARNER1 citations52

AISIN AW CO

7 patents

AISIN SEIKI

5 patents

SHINSANGYO KAIHATSU KK

2 patents

EQUOS RESEARCH KK

2 patents

NISSAN MOTOR

2 patents

ITO WATARU

1 patent

TOYOTA MOTOR CO LTD

1 patent

NIPPON ACCHAKUTANSHI SEIZO KK

1 patent

JSR CORP

1 patent