Inventor

Akira Yamamura

Inventor

Tokyo, JP

Overview

25→

Patents

1982–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 25 as inventor

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

F16Cprimary

F16CShafts21%

H04NPictorial communication, e.g. television14%

F04DNon-positive-displacement pumps10%

F16JPistons10%

G03GElectrography7%

G11BInformation storage based on relative movement between record carrier and transducer5%

H02KDynamo-electric machines5%

H10NElectric solid-state devices not otherwise provided for5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

A63FCard, board, or roulette games2%

PatentTitleYear

11,119,434Discrimination device and image forming apparatus2021 10,999,450Image inspection apparatus and image forming apparatus using reading result of incident light reflected from target both via and not via light guide member2021 10,462,315Image reading apparatus2019 10,382,642Image reading apparatus2019 9,521,287'Light guide, illuminating device for image reading, and image reading apparatus'2016 9,295,918'Game control server apparatus providing strong enemy character in game'2016 8,953,194'Image forming apparatus'2015 8,923,720'Control panel support mechanism, control panel assembly, and image forming apparatus'2014 8,570,615'Image scanning device'2013 8,007,176'Dynamic pressure bearing and rotation machine employing same'2011 6,385,976'Thermoelectric module with integrated heat exchanger and method of use'2002 6,290,233'Sealing apparatus'2001 5,394,044'Magnetic bearing device'1995 5,362,983'Thermoelectric conversion module with series connection'1994 5,092,740'Composite vacuum pump'1992 5,073,737'Magnetic bearing device'1991 5,068,558'Magnetic bearing device'1991 5,066,879'Single power source magnetic bearing device'1991 5,046,151'Magnetic bearing device'1991 4,964,167'Apparatus for generating synthesized voice from text'1990 4,955,731'Bearing equipment for vacuum devices'1990 4,847,526'Variant-pole electric motor'1989 4,357,023'Ferrofluid rotary-shaft seal apparatus and method'1982 4,340,233'Ferrofluid seal apparatus'1982 4,312,628'Turbomolecular vacuum pump having virtually zero power magnetic bearing assembly with single axis servo control'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Patents assigned to FERROFLUIDICS CORP (2)· patent assignee history

1982Based in Framingham, MA, US· patent location history

1989–1995Patents assigned to NIPPON FERROFLUIDICS KK (8)· patent assignee history

1990–2016Based in Tokyo, JP· patent location history

1990Based in Kadoma, JP· patent location history

1994–2014Patents assigned to YAMAMURA AKIRA (3)· patent assignee history

1994Based in Minato-ku, JP· patent location history

2013–2014Patents assigned to KONICA MINOLTA BUSINESS TECH (2)· patent assignee history

2013–2021Based in Toyokawa, JP· patent location history

2015–2021Patents assigned to KONICA MINOLTA INC (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON FERROFLUIDICS KK	8	1989–1995
KONICA MINOLTA INC	6	2015–2021
YAMAMURA AKIRAself	3	1994–2014
FERROFLUIDICS CORP	2	1982
KONICA MINOLTA BUSINESS TECH	2	2013–2014

Locations

Location	Patents	Span
Tokyo, JP	11	1990–2016
Toyokawa, JP	8	2013–2021
Framingham, Massachusetts, US	3	1982
Minato-ku, JP	1	1994
Kadoma, JP	1	1990