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Inventor

Teruo Maruyama

Inventor
Hirakata, JP

Overview

72→
Patents
1981–2019
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 72 as inventor

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

F04Cprimary
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids26%
F04DNon-positive-displacement pumps14%
F16CShafts8%
G11BInformation storage based on relative movement between record carrier and transducer6%
F04BPositive-displacement machines for liquids5%
H02KDynamo-electric machines5%
B05CApparatus for applying fluent materials to surfaces, in general4%
F01CRotary-piston or oscillating-piston machines or engines3%
A47LDomestic washing or cleaning1%
B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles1%
PatentTitleYear
10,465,816Fluid servo valve and fluid servo apparatus20198,833,511'Insulator for audio and method for evaluating same'20147,647,883'Fluid injection method and apparatus and display panel'20107,520,967'Fluid applying apparatus'20097,470,447'Method and device for discharging fluid'20087,323,960'Electromagnetostrictive actuator'20087,131,555'Method and device for discharging fluid'20067,118,353'Fluid transport system and method therefor'20067,059,538'Method and apparatus of applying fluid'20066,770,320'Apparatus and method for applying fluid'20046,679,685'Method and device for discharging viscous fluids'20046,610,435'Fuel cell with reduced gas leakage'20036,565,333'Fluid discharge apparatus and fluid discharge method'20036,558,127'Fluid discharge device and fluid discharge method'20036,194,800'Magnetic bearing'20015,951,266'Evacuating apparatus having interengaging rotors with threads having a decreasing pitch at the exhaust side'19995,836,746'Vacuum pump having lubrication and cooling systems'19985,782,609'Vacuum pump having different diameter rotors and a drive motor synchronization system'19985,709,537'Evacuating apparatus'19985,674,051'Positive displacement pump having synchronously rotated non-circular rotors'19975,564,907'Evacuating apparatus'19965,553,742'Fluid feed apparatus and method'19965,533,887'Fluid rotary apparatus having tapered rotors'19965,478,210'Multi-stage vacuum pump'19955,449,276'Two stage vacuum pump having different diameter interengaging rotors'19955,445,502'Vacuum pump having parallel kinetic pump inlet section'19955,417,551'Housing arrangement for a synchronous plural motor fluid rotary apparatus'19955,393,201'Synchronous rotating apparatus for rotating a plurality of shafts'19955,374,173'Fluid rotating apparatus with sealing arrangement'19945,367,997'Throttle actuator'19945,354,179'Fluid rotating apparatus'19945,352,097'Vacuum pump'19945,348,448'Fluid rotating apparatus with plural drive motor synchronization system'19945,329,216'Multi-shaft driving apparatus and fluid rotary apparatus'19945,314,312'Fluid-rotating apparatus'19945,302,089'Fluid rotating apparatus'19945,295,798'Fluid rotating apparatus with rotor communicating path'19945,271,719'Fluid rotating apparatus and method of controlling the same'19935,197,861'Fluid rotating apparatus'19934,969,797'Fan motor'19904,925,321'Dynamic pressure air bearing unit'19904,883,367'Bearing unit'19894,815,944'Variable capacity compressor'19894,797,011'Solid lubricant bearing'19894,781,103'Fluid servomechanism'19884,646,621'Hydraulic servo actuator'19874,627,291'Position sensing apparatus for an object to be measured'19864,580,949'Sliding vane type rotary compressor'19864,562,756'Numerical control screw tightening machine'19864,544,337'Rotary compressor with two or more suction parts'19854,536,141'Rotary vane compressor with suction passage changing in two steps'19854,509,905'Compressor with extended area between suction port and suction groove'19854,490,759'Rotary head assembly having fluid thrust and radial bearings'19844,486,158'Rotary vane compressor with suction port adjustment'19844,459,090'Rotary type compressor for automotive air conditioners'19844,415,308'Pump for supplying kerosene to combustion apparatus'19834,415,320'Sliding vane type rotary compressor'19834,413,963'Self-controllable capacity compressor'19834,408,966'Pump for supplying liquid fuel'19834,407,639'Compressor'19834,402,653'Rotary compressor'19834,395,208'Rotary vane compressor with wedge-like clearance between rotor and cylinder'19834,394,114'Compressor'19834,392,168'Rotary head assembly'19834,366,891'Push rod assembly for a clutch master cylinder'19834,366,519'Rotary head assembly for videotape recorder or reproducer'19824,363,047'Rotary head assembly for magnetic recording and reproducing device'19824,346,946'Rotary device'19824,332,428'Rotary mechanism with axial bearings'19824,316,225'Rotary head assembly for magnetic recording and reproducing device'19824,301,487'Rotary head assembly with lubricating double sleeve construction'19814,251,840'Rotary head assembly for magnetic recording and reproducing device'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (63)· patent assignee history
1981–1984Based in Neyagawa, JP· patent location history
1983–2003Patents assigned to AISIN SEIKI (2)· patent assignee history
1983Based in Chita, JP· patent location history
1984Based in Osaka, JP· patent location history
1985–2014Patents assigned to MARUYAMA TERUO (2)· patent assignee history
1985–2019Based in Hirakata, JP· patent location history
2003Based in Aichi, JP· patent location history
2008–2010Patents assigned to PANASONIC CORP (3)· patent assignee history
2014–2019Patents assigned to TOKKYOKIKI CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD631981–2008
PANASONIC CORP32008–2010
AISIN SEIKI21983–2003
MARUYAMA TERUOself21985–2014
TOKKYOKIKI CORP22014–2019
Locations
LocationPatentsSpan
Hirakata, JP511985–2019
Neyagawa, JP181981–1984
Aichi, JP12003
Osaka, JP11984
Chita, JP11983