Inventor
SHIMIZU AKIHIKO
JP84 patents
⚠️ This page may combine multiple inventors who share the name “SHIMIZU AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYO SODA MFG CO LTD
14 patentsUS4200538AApr 29, 1980
Process for preparing cation-exchange membrane
TOYO SODA MFG CO LTD25 citations82
US4081419AMar 28, 1978
Process for producing a polymer emulsion
TOYO SODA MFG CO LTD20 citations82
US4031302AJun 21, 1977
Process for preparing granular rubber
TOYO SODA MFG CO LTD21 citations81
US4128706ADec 5, 1978
Carrier for liquid chromatography
TOYO SODA MFG CO LTD12 citations74
US4065414ADec 27, 1977
Polyion complex and polyion complex film
TOYO SODA MFG CO LTD7 citations74
US4054547AOct 18, 1977
Polymerization of chloroprene
TOYO SODA MFG CO LTD13 citations74
US4013580AMar 22, 1977
Method of preventing formation of popcorn chloroprene polymer
TOYO SODA MFG CO LTD8 citations74
US4194999AMar 25, 1980
Process for producing powdery rubber
TOYO SODA MFG CO LTD18 citations73
US4189540AFeb 19, 1980
Process for producing cation exchange membrane by impregnating a diene monomer having carboxylic acid groups into a fluorinated membrane having cation exchange groups and polymerizing
TOYO SODA MFG CO LTD11 citations73
US4174426ANov 13, 1979
Method of improving characteristic of cation-exchange membrane by swelling in water miscible organic solvent and treating further with hydrochloric acid
TOYO SODA MFG CO LTD14 citations73
US4154909AMay 15, 1979
Process for producing cation exchange membrane by treatment of fluorinated polymer containing sulfonyl halide groups with amine and vinyl monomer
TOYO SODA MFG CO LTD7 citations73
US4148979AApr 10, 1979
Method of improving characteristics of cation-exchange membrane by swelling in water miscible organic solvent
TOYO SODA MFG CO LTD12 citations73
US4136237AJan 23, 1979
Process for preparing cation-exchange membrane by polymerizing lactone ring containing unsaturated monomer in the presence of fluorinated polymer
TOYO SODA MFG CO LTD13 citations73
US4132682AJan 2, 1979
Process for preparing cation-exchange membrane
TOYO SODA MFG CO LTD17 citations73
RICOH KK
13 patentsUS6487149B1Nov 26, 2002
Optical recording and reproducing methods for optical disk
RICOH KK88 citations98
US5737307AApr 7, 1998
Method for recording-regenerating information from optical recording mediums
RICOH KK76 citations96
US5638354AJun 10, 1997
Optical information recording medium
RICOH KK50 citations96
US5926446AJul 20, 1999
Optical information recording medium and a method of tracking servo for optical information recording medium
RICOH KK43 citations93
US5812520ASep 22, 1998
Optical disk unit, control method thereof, optical information recording medium and recording-regenerating method using this optical information recording medium
RICOH KK26 citations93
US5344683ASep 6, 1994
Optical information recording medium with phase grooves in land portions of information recording areas
RICOH KK26 citations93
US5220556AJun 15, 1993
Optical disk with identification phase-encoded area
RICOH KK29 citations93
US7126897B2Oct 24, 2006
Multi-level information recording apparatus, multi-level information recording method, multi-level information recording medium and multi-level information recording-reproducing apparatus
RICOH KK25 citations92
US6127100AOct 3, 2000
Method of manufacturing a stamper for use in optical information recording medium
RICOH KK18 citations84
US6888479B2May 3, 2005
Data processing method, circuit, and apparatus with increased accuracy
RICOH KK15 citations83
US7027375B2Apr 11, 2006
Multi-value data recording and reproducing device
RICOH KK9 citations74
US6714230B2Mar 30, 2004
Method for optically recording information on an optically re-writable information medium
RICOH KK7 citations74
US7082091B2Jul 25, 2006
Information reproducing method judging a multivalued level of a present cell by referring to judged multivalued levels of a preceding cell and an ensuing cell
RICOH KK7 citations73
INOUE JAPAX RES
8 patentsUS4152570AMay 1, 1979
Drive assembly for multi-directional lateral displacement between tool and workpiece
INOUE JAPAX RES51 citations93
US3962069AJun 8, 1976
System for treating sludge
INOUE JAPAX RES50 citations93
US4751361AJun 14, 1988
Automatic TW electroerosion machining system
INOUE JAPAX RES17 citations82
US4629854ADec 16, 1986
TW-electroerosion with means for regulating flushing liquid in cutting slot
INOUE JAPAX RES20 citations82
US4558977ADec 17, 1985
NC Method and system for machining a 3D contour in a workpiece
INOUE JAPAX RES25 citations81
US4626645ADec 2, 1986
Automatic TW electroerosion machining system
INOUE JAPAX RES15 citations74
US4527034AJul 2, 1985
Electrode positioning method and apparatus for NC-EDM
INOUE JAPAX RES9 citations74
US4307279ADec 22, 1981
Electrode assembly for travelling-wire electroerosion machine
INOUE JAPAX RES17 citations74
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
5 patentsUS5885063AMar 23, 1999
Variable capacity scroll compressor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD80 citations96
US6379123B1Apr 30, 2002
Capacity control scroll compressor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD50 citations93
US6428286B1Aug 6, 2002
Capacity control scroll compressor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD45 citations92
US5597296AJan 28, 1997
Scroll compressor having a check valve received in a stationary scroll member recess
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations92
US5562436AOct 8, 1996
Scroll compressor having improved orbital drive mechanism
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations73
JAPAX INC
4 patentsUS4608476AAug 26, 1986
Retraction control for 3D-path controlled generic electrode electroerosion
JAPAX INC36 citations92
US4430180AFeb 7, 1984
Apparatus for and method of electroerosively drilling a thin hole in a workpiece
JAPAX INC27 citations92
US4439659AMar 27, 1984
Electrode feed system in electrical machining, capable of quick-response electrode retraction and reciprocation
JAPAX INC13 citations73
US4333000AJun 1, 1982
Apparatus for making hollow extrusion dies
JAPAX INC12 citations73
PACIFIC ENG
2 patentsKONAMI DIGITAL ENTERTAINMENT
1 patentINOUE JAPAX RESEARCH INC AND J
1 patentSEITA TORU
1 patentPACIFIC ENGINEERING CORP
1 patentShowing the top 50 of 84 patents by PatentIndex Score.