Inventor
IWATA TETSUYA
JP40 patents
⚠️ This page may combine multiple inventors who share the name “IWATA TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALPS ELECTRIC CO LTD
10 patentsUS4819112AApr 4, 1989
Thin film magnetic head
ALPS ELECTRIC CO LTD20 citations82
US4625249ANov 25, 1986
Head holding mechanism of magnetic disk device
ALPS ELECTRIC CO LTD15 citations74
US4514776AApr 30, 1985
Magnetic head and method of manufacturing the same
ALPS ELECTRIC CO LTD6 citations74
US5146379ASep 8, 1992
Thin film magnetic head
ALPS ELECTRIC CO LTD6 citations73
US4811142AMar 7, 1989
Magnetic head for vertical magnetic recording and method of producing same
ALPS ELECTRIC CO LTD13 citations71
US4768121AAug 30, 1988
Magnetic head formed by composite main pole film and winding core for perpendicular magnetic recording
ALPS ELECTRIC CO LTD11 citations71
US4780780AOct 25, 1988
Magnetic head
ALPS ELECTRIC CO LTD4 citations63
US4754352AJun 28, 1988
Magnetic drum recording apparatus
ALPS ELECTRIC CO LTD5 citations63
US4630253ADec 16, 1986
Electromagnetic pickup cartridge having elongate core elements
ALPS ELECTRIC CO LTD2 citations63
US4639809AJan 27, 1987
Magnetic head
ALPS ELECTRIC CO LTD0 citations42
TOSHIBA MEMORY CORP
9 patentsUS10769011B2Sep 8, 2020
Memory device that changes a writable region of a data buffer based on an operational state of an ECC circuit
TOSHIBA MEMORY CORP2 citations71
US10732863B2Aug 4, 2020
Memory system storing block protection information
TOSHIBA MEMORY CORP3 citations71
US10621034B2Apr 14, 2020
Memory device that changes a writable region of a data buffer based on an operational state of an ECC circuit
TOSHIBA MEMORY CORP2 citations71
US10289482B2May 14, 2019
Memory device that updates parameters transmitted to a host based on operational settings
TOSHIBA MEMORY CORP3 citations71
US9959937B2May 1, 2018
Memory system including test circuit
TOSHIBA MEMORY CORP3 citations71
US9891987B2Feb 13, 2018
Memory device that communicates error correction results to a host
TOSHIBA MEMORY CORP2 citations71
US10445174B2Oct 15, 2019
Memory device that communicates error correction results to a host
TOSHIBA MEMORY CORP0 citations51
US10310755B2Jun 4, 2019
Memory system having a semiconductor memory device with protected blocks
TOSHIBA MEMORY CORP0 citations51
US10235070B2Mar 19, 2019
Memory system having a semiconductor memory device with protected blocks
TOSHIBA MEMORY CORP0 citations51
SYSTEM SEIKO CO LTD
3 patentsUS6033522AMar 7, 2000
Surface treatment method and apparatus for rotatable disc
SYSTEM SEIKO CO LTD60 citations95
US6275032B1Aug 14, 2001
Surface flatness measuring apparatus
SYSTEM SEIKO CO LTD25 citations86
US6011618AJan 4, 2000
Method and apparatus of surface inspection of a disk
SYSTEM SEIKO CO LTD9 citations73
JFE STEEL CORP
3 patentsUS12031192B2Jul 9, 2024
Continuous hot-dip galvanizing apparatus
JFE STEEL CORP2 citations72
US11718889B2Aug 8, 2023
Method for producing hot-dip galvanized steel sheet and continuous hot-dip galvanizing apparatus
JFE STEEL CORP0 citations61
US9895863B2Feb 20, 2018
High-strength galvanized steel sheet and method of manufacturing the same
JFE STEEL CORP0 citations35