Inventor

Kotaro Hirasawa

Inventor

Hitachi, JP

Overview

21→

Patents

1977–1999

Patent span

Physics

Primary field (CPC G)

Patents· 21 as inventor

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

B66Bprimary

B66BElevators26%

G06FElectric digital data processing19%

F02DControlling combustion engines10%

G06VImage or video recognition or understanding10%

F02PIgnition, other than compression ignition, for internal-combustion engines6%

G06TImage data processing or generation, in general6%

Y02TClimate change mitigation technologies related to transportation6%

B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors3%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock3%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes3%

PatentTitleYear

5,892,190'Method and system of controlling elevators and method and apparatus of inputting requests to the control system'1999 5,307,903'Method and system of controlling elevators and method and apparatus of inputting requests to the control system'1994 5,274,717'Parallel image processor for performing local neighboring image processing'1993 5,109,509'System for processing natural language including identifying grammatical rule and semantic concept of an undefined word'1992 4,853,890'Vector processor'1989 4,766,590'Loop transmission system having plural stations connected in a variable order'1988 4,718,091'Multifunctional image processor'1988 4,680,804'Method for designating a recognition mode in a hand-written character/graphic recognizer'1987 4,653,107'On-line recognition method and apparatus for a handwritten pattern'1987 4,641,354'Apparatus for recognizing and displaying handwritten characters and figures'1987 4,530,050'Central processing unit for executing instructions of variable length having end information for operand specifiers'1985 4,448,286'Elevator group control system'1984 4,411,338'Apparatus for calculating elevator cage call forecast'1983 4,408,279'Method and apparatus for adjusting the supply of fuel to an internal combustion engine for an acceleration condition'1983 4,341,287'Elevator control apparatus'1982 4,326,606'Apparatus for controlling rescue operation of an elevator'1982 4,282,573'Processor interrupt device for an electronic engine control apparatus'1981 4,274,142'Apparatus for detecting revolutions of an internal combustion engine'1981 4,109,808'Method of storing articles in a warehouse to form an imaginary link of articles'1978 4,081,059'Elevator control system'1978 4,043,429'Elevator car group control system'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1999Patents assigned to HITACHI LTD (21)· patent assignee history

1977–1999Based in Hitachi, JP· patent location history

1981Based in Ibaraki, JP· patent location history

1985Patents assigned to HITACHI ENG CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	21	1977–1999
HITACHI ENG CO LTD	1	1985

Locations

Location	Patents	Span
Hitachi, JP	20	1977–1999
Ibaraki, JP	1	1981