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Inventor

John M. Clarke

Inventor
Chillicothe, IL, US

Overview

54→
Patents
1976–2018
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 54 as inventor

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

F02Bprimary
F02BInternal-combustion piston engines24%
Y02TClimate change mitigation technologies related to transportation11%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof9%
F01LCyclically operating valves for machines or engines8%
G01RMeasuring electric variables8%
F01BMachines or engines, in general or of positive-displacement type, e.g. steam engines6%
F01CRotary-piston or oscillating-piston machines or engines5%
F02DControlling combustion engines5%
F02FCylinders, pistons or casings, for combustion engines5%
F02GHot gas or combustion-product positive-displacement engine plants3%
PatentTitleYear
9,951,679Reciprocating internal combustion engine20189,334,844'Reciprocating internal combustion engine'20168,813,694'Piston cooling system'20148,763,593'Intake and exhaust chambers'20148,671,922'Combustion chamber intake and exhaust shutter'20148,381,691'Fuel injection system'20137,466,132'Squid detected NMR and MRI at ultralow fields'20087,218,104'Squid detected NMR and MRI at ultralow fields'20077,210,640'Fuel injector spray alteration through a moveable tip sleeve'20077,187,169'NMR and MRI apparatus and method'20077,116,102'SQUID detected NMR and MRI at ultralow fields'20067,053,610'Squid detected NMR and MRI at ultralow fields'20066,885,192'SQUID detected NMR and MRI at ultralow fields'20056,668,788'Homogenous charge compression ignition engine having a cylinder including a high compression space'20036,601,549'Two stroke homogenous charge compression ignition engine with pulsed air supplier'20036,546,909'Piston for a thermal regenerated engine'20036,324,846'Exhaust gas recirculation system for an internal combustion engine'20016,318,310'Internal combustion engine'20016,159,444'NMR/MRI with hyperpolarized gas and high Tc SQUID'20006,154,026'Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise'20006,135,069'Method for operation of a free piston engine'20006,070,408'Hydraulic apparatus with improved accumulator for reduced pressure pulsation and method of operating the same'20006,023,161'Low-noise SQUID'20005,699,758'Method and apparatus for multiple cycle internal combustion engine operation'19975,647,307'Valving for dual compression/expansion engine and method of assembling the same'19975,623,894'Dual compression and dual expansion engine'19975,566,549'In-line engines having residual cycles and method of operation'19965,542,382'Dual compression and dual expansion internal combustion engine and method therefor'19965,540,191'High efficiency thermal regenerated internal combustion engine'19965,522,358'Fluid controlling system for an engine'19965,497,743'Injector for separate control of flow and momentum'19965,456,219'Dual compression and dual expansion internal combustion engine and method therefor'19955,448,979'Dual compression and dual expansion internal combustion engine and method therefor'19955,445,248'Exhaust brake'19955,339,775'Cooling arrangement for a piston assembly'19945,291,035'Microelectronic superconducting crossover and coil'19945,277,222'Pressure actuatable valve assembly'19945,271,229'Method and apparatus to improve a turbocharged engine transient response'19935,226,401'Method and apparatus for exhaust gas recirculation via reverse flow motoring'19935,216,987'Method and apparatus for optimizing breathing utilizing unit valve actuation'19935,205,152'Engine operation and testing using fully flexible valve and injection events'19935,205,259'Modified cylinder head'19935,117,790'Engine operation using fully flexible valve and injection events'19924,447,235'Thoracentesis device'19844,392,395'Infinitely variable transmission'19834,341,070'High thermal efficiency power plant and operating method therefor'19824,324,535'Slant axis rotary piston mechanism with fixed sinuous partition in grooved rotor'19824,318,675'Rotary expansible chamber apparatus with stress relief'19824,137,706'Engine in which fuel is reacted in a plurality of stages'19794,124,060'Rotor'19784,044,629'Reciprocating piston machine'19774,029,444'Sealing bolt seat for rotary piston machine'19774,008,989'Bolt seal for rotary piston machine'19773,972,657'Slant axis rotary mechanism'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1983Patents assigned to CATERPILLAR TRACTOR CO (8)· patent assignee history
1977–1979Based in Banbury, GB· patent location history
1982–1983Based in Dunlap, IL, US· patent location history
1984–2014Patents assigned to CLARKE JOHN M (5)· patent assignee history
1992–2007Patents assigned to CATERPILLAR INC (26)· patent assignee history
1992–2007Based in Chillicothe, IL, US· patent location history
1994–2008Patents assigned to UNIV CALIFORNIA (8)· patent assignee history
1994–2008Based in Berkeley, CA, US· patent location history
2013–2018Patents assigned to Motiv Engines LLC (6)· patent assignee history
2013–2018Based in Woodsboro, MD, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CATERPILLAR INC261992–2007
CATERPILLAR TRACTOR CO81976–1983
UNIV CALIFORNIA81994–2008
Motiv Engines LLC62013–2018
CLARKE JOHN Mself51984–2014
Locations
LocationPatentsSpan
Chillicothe, Illinois, US261992–2007
Berkeley, California, US101994–2008
Woodsboro, Maryland, US62013–2018
Dunlap, Illinois, US41982–1983
Banbury, GB41977–1979