Inventor
YAMAMOTO TSUTOMU
JP64 patents
⚠️ This page may combine multiple inventors who share the name “YAMAMOTO TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OLYMPUS OPTICAL CO
9 patentsUS5155941AOct 20, 1992
Industrial endoscope system having a rotary treatment member
OLYMPUS OPTICAL CO1,426 citations98
US5090259AFeb 25, 1992
Pipe-inspecting apparatus having a self propelled unit
OLYMPUS OPTICAL CO147 citations98
US4747660AMay 31, 1988
Light transmitter
OLYMPUS OPTICAL CO139 citations98
US4746203AMay 24, 1988
Optical system for endoscope
OLYMPUS OPTICAL CO59 citations96
US4720178AJan 19, 1988
Optical system for endoscope
OLYMPUS OPTICAL CO59 citations96
US4706653ANov 17, 1987
Endoscope device
OLYMPUS OPTICAL CO65 citations96
US4770443ASep 13, 1988
Inserted part of an industrial endoscope
OLYMPUS OPTICAL CO26 citations93
US5335061AAug 2, 1994
Endoscope holding apparatus for inspecting the interiors of a reciprocating engine and rotary engine having ignition plug holes, endoscope apparatus including the endoscope holding apparatus and inspecting method
OLYMPUS OPTICAL CO37 citations92
US4867136ASep 19, 1989
Endoscope apparatus
OLYMPUS OPTICAL CO31 citations92
SONY CORP
8 patentsUS6341278B1Jan 22, 2002
Recording and reproducing apparatus and method for accessing data stored on a randomly accessible recording medium, and for managing data thereon
SONY CORP142 citations99
US5740435AApr 14, 1998
Data management apparatus and method for managing data of variable lengths recorded on a record medium
SONY CORP136 citations99
US5933534AAug 3, 1999
Image information encoding apparatus, image information decoding apparatus, and image information recording and reproducing system
SONY CORP27 citations93
US6349349B1Feb 19, 2002
System for linking a main control unit to data receiving and transmitting units and a first and second storage units by a network
SONY CORP15 citations83
US6321237B1Nov 20, 2001
Recording and reproducing apparatus and method for accessing data stored on a randomly accessible recording medium, and for managing data thereon
SONY CORP14 citations82
US5897631AApr 27, 1999
Randomly accessible recording medium, and apparatus and method for managing data thereon
SONY CORP9 citations74
US6253232B1Jun 26, 2001
Data processing control device and method of same
SONY CORP7 citations72
US7240081B1Jul 3, 2007
Free storage space management apparatus and method
SONY CORP4 citations59
NICHIAS CORP
8 patentsUS4508777AApr 2, 1985
Compressed non-asbestos sheets
NICHIAS CORP66 citations96
US4477094AOct 16, 1984
Gasket and method for high-temperature and high pressure application
NICHIAS CORP43 citations96
US4546033AOct 8, 1985
Gasket sheet
NICHIAS CORP32 citations89
US4485138ANov 27, 1984
Heat-resistant sheet gasket
NICHIAS CORP42 citations89
US4629199ADec 16, 1986
Vortex gasket with composition for high-temperature and high-pressure application
NICHIAS CORP21 citations82
US4690867ASep 1, 1987
Material for low melting point metal casting equipment
NICHIAS CORP17 citations81
US5091128AFeb 25, 1992
Method for producing material for low melting point metal casting equipment
NICHIAS CORP1 citations61
US4975231ADec 4, 1990
Method for producing material for low melting point metal casting equipment
NICHIAS CORP1 citations61
HITACHI LTD
5 patentsUS6816051B2Nov 9, 2004
Superconducting magnet and magnetic resonance imaging apparatus using the same
HITACHI LTD5 citations73
US6667676B2Dec 23, 2003
Superconducting magnet and magnetic resonance imaging apparatus using the same
HITACHI LTD6 citations73
US7714574B2May 11, 2010
Superconducting magnet with refrigerator and magnetic resonance imaging apparatus using the same
HITACHI LTD6 citations62
US6664876B2Dec 16, 2003
Superconducting magnet and magnetic resonance imaging apparatus using the same
HITACHI LTD6 citations62
US7990661B2Aug 2, 2011
Active shield superconducting electromagnet apparatus and magnetic resonance imaging system
HITACHI LTD2 citations59
KANSAI PAINT CO LTD
2 patentsUS AIR FORCE
1 patentSEIKO EPSON CORP
1 patentNISSAN MOTOR
1 patentKANBARA KOUJI
1 patentMITSUBA CORP
1 patentSTANLEY ELECTRIC CO LTD
1 patentOSAWA TATSURO
1 patentNISHIREI CORP
1 patentKAZARI ICHI CO LTD
1 patentDIJET IND CO LTD
1 patentHISAKA WORKS LTD
1 patentTAKAYASU CO LTD
1 patentNILES PARTS CO LTD
1 patentJAPAN ATOMIC ENERGY RES INST
1 patentMITSUBISHI ELECTRIC CORP
1 patentOKI DATA KK
1 patentDAICEL CHEM
1 patentSAKAI CHEMICAL INDUSTRY CO
1 patentShowing the top 50 of 64 patents by PatentIndex Score.