Inventor

Tohru Miura

Inventor

Chofu, JP

Overview

35→

Patents

1988–1998

Patent span

Physics

Primary field (CPC G)

Patents· 35 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer29%

C07CAcyclic or carbocyclic compounds18%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds14%

G02BOptical elements, systems or apparatus13%

B29CShaping or joining of plastics9%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%

C08LCompositions of macromolecular compounds4%

G06FElectric digital data processing4%

A01NPreservation of bodies of humans or animals or plants or parts thereof2%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts2%

PatentTitleYear

5,753,730'Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur-containing urethane resin lens and lens prepared thereby'1998 5,602,812'Reproducing rate control apparatus for optical disk'1997 5,594,088'Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur containing urethane resin lens and lens prepared thereby'1997 5,590,105'Disk apparatus using constant linear velocity method and having head function stopped in standby mode'1996 5,552,945'Transducer recalibration system and method for a rotating disk data storage'1996 5,535,183'Optical disk reproducing device and its seek operation method'1996 5,521,895'Optical disk reproducing apparatus for controlling the rotational speed of a spindle motor between a CLV control and a CAV control'1996 5,434,724'Method and apparatus for the high speed driving of a stepper motor against seek error upon power restoration in a microcomputer system'1995 5,408,369'Power saving system for rotating disk data storage apparatus'1995 5,400,190'Power saving system for a disk sensor in rotating disk data storage apparatus'1995 5,357,384'Rotating disk data storage apparatus capable of preventing head travel when the disk is not loaded'1994 5,345,343'Power saving system for file protect and disk capacity sensors in rotating disk data storage apparatus'1994 5,309,296'System for eliminating noise arising from difference in polarity of magnetization by tunnel erase heads'1994 5,303,107'System for holding a track counter active despite power suspension in rotating disk data storage apparatus'1994 5,293,601'Floppy disk control unit and apparatus having a floppy disk control unit'1994 5,293,625'Signal selecting circuit which selectively outputs predetermined signal to host computer compatible with plurality of computer hardware types and disk drive having such signal selecting circuit'1994 5,283,702'Power saving system for rotating disk data storage apparatus'1994 5,150,340'Disc apparatus for reading out information from disc recording medium'1992 5,126,388'Highly-refractive plastic lens and process for making the lens'1992 5,123,954'3,4-trans-4-ethyl-1-(substituted phenyl)-3- (substituted phenyl) pyrrolidin-2-ones, method for preparing the same, and herbicidal method compositions containing the same as herbicidally active ingredients'1992 5,084,545'Resin having a large refractive index, lenses comprising the resin and process for preparing the lens'1992 5,021,503'Resin for plastic lens having high-refractive index, lens comprising the resin, and method for preparation of the lens'1991 5,013,496'Process for molding a highly-refractive plastic lens'1991 4,946,923'S-alkyl thiocarbamate base resin, plastic lens comprising the resin, and process for making the lens'1990 4,939,306'Preparation process of 4,4\'-biphenol, precursor of same and preparation process of precursor'1990 4,929,707'Polyurethane base lens resin, plastic lens comprising the resin and preparation method of the lens'1990 4,894,487'Preparation process of 4-(4-hydroxyphenyl)-cyclohexanol'1990 4,877,907'Preparation process of 4,4\'-biphenol, precursor of same and preparation process of precursor'1989 4,873,374'Preparation process of 4,4\'-biphenol, precursor of same and preparation process of precursor'1989 4,851,590'Method of purifying 2,4-xylenol'1989 4,814,488'4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives and process for preparing same'1989 4,785,132'Process for preparing cyclohexanonecarboxylic acid compounds'1988 4,755,616'4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid derivatives and process for preparing same'1988 4,755,617'Process for the preparation of 4\'-hydroxybiphenyl-4-carboxyl acid'1988 4,723,046'Process for the preparation of 4,4\'-biphenol'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1998Patents assigned to MITSUI TOATSU CHEMICALS (19)· patent assignee history

1988–1990Based in Ohmuta, JP· patent location history

1991–1992Based in Yokohama, JP· patent location history

1992–1997Patents assigned to TEAC CORP (16)· patent assignee history

1992–1994Based in Mitaka, JP· patent location history

1994–1997Based in Chofu, JP· patent location history

1997–1998Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUI TOATSU CHEMICALS	19	1988–1998
TEAC CORP	16	1992–1997

Locations

Location	Patents	Span
Chofu, JP	8	1994–1997
Ohmuta, JP	7	1988–1990
Mitaka, JP	6	1992–1994
Yokohama, JP	4	1991–1992
Chiba, JP	2	1997–1998