Inventor
AKIYAMA HIROYUKI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “AKIYAMA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JAPAN STYRENE PAPER CORP
13 patentsUS4602082AJul 22, 1986
Propylene-base random copolymer particles and production process thereof
JAPAN STYRENE PAPER CORP30 citations92
US4443393AApr 17, 1984
Method of pressurizing treatment of pre-foamed particles of polyolefin resin
JAPAN STYRENE PAPER CORP44 citations92
US4440703AApr 3, 1984
Process for producing foamed and molded article of polypropylene resin
JAPAN STYRENE PAPER CORP49 citations92
US4399087AAug 16, 1983
Process for producing foamed polyolefin articles from aged pre-foamed particles of polyolefin resins
JAPAN STYRENE PAPER CORP57 citations92
US4436840AMar 13, 1984
Process for producing pre-foamed particles of polyolefin resin
JAPAN STYRENE PAPER CORP33 citations91
US4451417AMay 29, 1984
Method of producing extruded plate-like polystyrene foam
JAPAN STYRENE PAPER CORP20 citations78
US4806293AFeb 21, 1989
Method of producing a foamed, molded article
JAPAN STYRENE PAPER CORP20 citations77
US4889671ADec 26, 1989
Production method of prefoamed particles of polyolefin resin
JAPAN STYRENE PAPER CORP16 citations73
US4692507ASep 8, 1987
Propylene-base random copolymer particles and production process thereof
JAPAN STYRENE PAPER CORP13 citations73
US4749725AJun 7, 1988
Production process of pre-foamed particles
JAPAN STYRENE PAPER CORP10 citations72
US4716021ADec 29, 1987
Heat treatment apparatus for polyolefin resin particles
JAPAN STYRENE PAPER CORP15 citations71
US4260572AApr 7, 1981
Process for producing foamed polystyrene boards
JAPAN STYRENE PAPER CORP3 citations61
US4393016AJul 12, 1983
Process for producing plate-like polystyrene resin foam
JAPAN STYRENE PAPER CORP4 citations60
SUBARU CORP
4 patentsUS11760338B2Sep 19, 2023
Vehicle control apparatus
SUBARU CORP2 citations69
US11607953B2Mar 21, 2023
Vehicle control system
SUBARU CORP0 citations48
US12498233B2Dec 16, 2025
Information processing apparatus
SUBARU CORP0 citations47
US12454250B2Oct 28, 2025
Drive motor control system and snow removal system for vehicle
SUBARU CORP0 citations47
HITACHI LTD
3 patentsUS7336156B2Feb 26, 2008
Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
HITACHI LTD48 citations90
US5214557AMay 25, 1993
D.c. vacuum circuit breaker for an electric motor vehicle
HITACHI LTD33 citations87
US4564774AJan 14, 1986
Binary logic device having input and output alternating signals
HITACHI LTD3 citations63
IBM
2 patentsUS5646802AJul 8, 1997
Disk drive with head suspensions mounted to actuator arm opposite sides to face respective upper and lower surfaces of disk
IBM20 citations92
US6278570B1Aug 21, 2001
Method and apparatus for moving a head arm assembly to a landing zone in a disk drive storage device
IBM5 citations62