P

Inventor

HIRATA KAZUYUKI

JP45 patents
⚠️ This page may combine multiple inventors who share the name “HIRATA KAZUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOYOTA BOSHOKU KK

27 patents
US10737315B2Aug 11, 2020

Press die

TOYOTA BOSHOKU KK2 citations73
US10328482B2Jun 25, 2019

Method for manufacturing metal compact and apparatus for manufacturing metal compact

TOYOTA BOSHOKU KK3 citations73
US10150152B2Dec 11, 2018

Sheet metal forming method and apparatus

TOYOTA BOSHOKU KK4 citations73
US9962751B2May 8, 2018

Metal plate forming method and forming device

TOYOTA BOSHOKU KK2 citations73
US9962754B2May 8, 2018

Pressing method and pressing device for forming punched piece by punching metal plate with die and punch

TOYOTA BOSHOKU KK3 citations73
US9656314B2May 23, 2017

Press die

TOYOTA BOSHOKU KK4 citations73
US9587679B2Mar 7, 2017

Method and apparatus for manufacturing rolling-element bearing

TOYOTA BOSHOKU KK3 citations73
US9227239B2Jan 5, 2016

Forming die apparatus and die member

TOYOTA BOSHOKU KK4 citations71
US9630229B2Apr 25, 2017

Device for molding and method for molding metal plate

TOYOTA BOSHOKU KK5 citations67
US10421114B2Sep 24, 2019

Workpiece manufacturing apparatus

TOYOTA BOSHOKU KK1 citations62
US10384250B2Aug 20, 2019

Method for forming metal plate and apparatus for forming metal plate

TOYOTA BOSHOKU KK1 citations62
US12311425B2May 27, 2025

Workpiece production apparatus

TOYOTA BOSHOKU KK0 citations52
US10478886B2Nov 19, 2019

Stamping method and stamping apparatus

TOYOTA BOSHOKU KK0 citations52
US10381660B2Aug 13, 2019

Separator for fuel cell

TOYOTA BOSHOKU KK0 citations52
US9757787B2Sep 12, 2017

Metal plate stamping method and stamping apparatus

TOYOTA BOSHOKU KK0 citations52
US9735436B2Aug 15, 2017

Separator for fuel cell

TOYOTA BOSHOKU KK0 citations52
US9511576B2Dec 6, 2016

Rotary lamination apparatus

TOYOTA BOSHOKU KK0 citations50
US12226962B2Feb 18, 2025

Method for manufacturing fuel cell separator

TOYOTA BOSHOKU KK0 citations48
US10071411B2Sep 11, 2018

Press die

TOYOTA BOSHOKU KK1 citations44
US10486219B2Nov 26, 2019

Metal plate punching method and metal plate punching system

TOYOTA BOSHOKU KK0 citations42
US10265750B2Apr 23, 2019

Press die apparatus

TOYOTA BOSHOKU KK0 citations42
US9550227B2Jan 24, 2017

Press molding machine

TOYOTA BOSHOKU KK0 citations42
US9246360B2Jan 26, 2016

Laminate of metal plates, core for rotating electrical machine, and laminating method for laminate of metal plates

TOYOTA BOSHOKU KK0 citations42
US9233409B2Jan 12, 2016

Press die

TOYOTA BOSHOKU KK0 citations42
US12280695B2Apr 22, 2025

Position controlling device

TOYOTA BOSHOKU KK0 citations41
US10507591B2Dec 17, 2019

Workpiece manufacturing apparatus

TOYOTA BOSHOKU KK0 citations39
US10799928B2Oct 13, 2020

Method and apparatus for forming metal sheet

TOYOTA BOSHOKU KK0 citations34

SEIKO EPSON CORP

10 patents

HIRATA KAZUYUKI

7 patents

MAZDA MOTOR

1 patent