Inventor
HAYAKAWA MASATOSHI
JP38 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA MASATOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
23 patentsUS5365391ANov 15, 1994
Magnetic reproducing head having a distributed-constant circuit type magnetic field detector
SONY CORP72 citations95
US4640871AFeb 3, 1987
Magnetic material having high permeability in the high frequency range
SONY CORP68 citations95
US5331491AJul 19, 1994
High-density magnetic recording and reproducing head
SONY CORP23 citations92
US5057380AOct 15, 1991
Soft magnetic thin films of alloys of feconi or fecody and laminates comprising alternate layers of face centered cubic and body centered cubic crystal structure
SONY CORP35 citations92
US4796241AJan 3, 1989
Device for producing a high frequency modulation magnetic field used in magneto-optical recording
SONY CORP21 citations81
US4379004AApr 5, 1983
Method of manufacturing an amorphous magnetic alloy
SONY CORP22 citations81
US5737154AApr 7, 1998
Rotary magnetic head apparatus with circuitry for driving head and circuitry for transmitting output signals in noncontact fashion disposed on rotary drums
SONY CORP13 citations73
US5182690AJan 26, 1993
Fe-n-based soft magnetic thin films and magnetic heads using such films
SONY CORP8 citations73
US4639278AJan 27, 1987
Method of manufacturing an amorphous magnetic alloy
SONY CORP15 citations73
US4475962AOct 9, 1984
Annealing method for amorphous magnetic alloy
SONY CORP12 citations73
US4473415ASep 25, 1984
Method of manufacturing an amorphous magnetic alloy
SONY CORP10 citations73
US4444602AApr 24, 1984
Method of manufacturing amorphous magnetic alloy ribbon and use for magnetostriction delay lines
SONY CORP15 citations73
US4311539AJan 19, 1982
Method of manufacturing a high permeability amorphous magnetic alloy
SONY CORP9 citations73
US5515222AMay 7, 1996
Magnetic head core arrangement having medium facing surface sides formed of single-crystal ferrite
SONY CORP13 citations72
US4953050AAug 28, 1990
Magnetic head with Ru containing soft magnetic alloy in gap
SONY CORP15 citations71
US4748000AMay 31, 1988
Soft magnetic thin film
SONY CORP9 citations71
US5585983ADec 17, 1996
Magnetic head
SONY CORP9 citations70
US5867887AFeb 9, 1999
Manufacturing method for magnetic head
SONY CORP2 citations63
US5875081AFeb 23, 1999
Magnetic head
SONY CORP2 citations62
US4707417ANov 17, 1987
Magnetic composite film
SONY CORP6 citations62
US5852536ADec 22, 1998
Magnetic head
SONY CORP4 citations60
US5475551ADec 12, 1995
Magnetic head
SONY CORP3 citations60
US5266418ANov 30, 1993
Magnetic recording medium
SONY CORP1 citations51
CKD CORP
5 patentsUS4276683AJul 7, 1981
Method for winding electrode foils and separators for capacitor
CKD CORP5 citations63
US4382645AMay 10, 1983
Apparatus for sealing lamp mount to lamp tube
CKD CORP3 citations54
US4375024AFeb 22, 1983
Apparatus for welding base pins of fluorescent lamp
CKD CORP4 citations54
US4311457AJan 19, 1982
Basing heating apparatus
CKD CORP1 citations44
US4367574AJan 11, 1983
Fluorescent tube holder
CKD CORP0 citations30
AISIN SEIKI
3 patentsSUMITOMO ELECTRIC INDUSTRIES
3 patentsUS11378737B2Jul 5, 2022
Optical fiber preform, method for manufacturing optical fiber preform, and method for setting striae pitch of optical fiber preform
SUMITOMO ELECTRIC INDUSTRIES0 citations62
US9475722B2Oct 25, 2016
Optical fiber producing method and apparatus and optical fiber
SUMITOMO ELECTRIC INDUSTRIES2 citations57
US12012349B2Jun 18, 2024
Glass fine particle deposit and method for manufacturing glass preform
SUMITOMO ELECTRIC INDUSTRIES0 citations52