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Inventor

John P. Hill

Inventor
Nederland, CO, US

Overview

62→
Patents
1978–2021
Patent span
Physics
Primary field (CPC G)

Patents· 62 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus26%
G11BInformation storage based on relative movement between record carrier and transducer11%
G06FElectric digital data processing8%
Y10TTechnical subjects covered by former us classification7%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner6%
G01RMeasuring electric variables5%
G08CTransmission systems for measured values, control or similar signals5%
H03CModulation4%
B01DSeparation3%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors3%
PatentTitleYear
11,092,754Protective cap for an optical fiber connector202110,859,781Optical fiber distribution systems and components202010,852,498Optical fiber distribution systems and components202010,816,745Optical fiber pedestal box202010,606,006Optical fiber distribution systems and components202010,495,834Optical fiber management201910,444,458Optical fiber management201910,371,916Optical fiber pathway duct201910,353,156Pushable multi-fiber connector201910,281,673Optical fiber management201910,234,641In-line sealed adapter tube201910,209,469Optical fiber management system201910,031,304Optical fiber management system201810,012,814Optical fiber management201810,007,068Optical fiber connector20189,804,343'Multiport optical fiber terminal'20179,772,457'Pushable multi-fiber connector'20179,678,285'Optical fiber connector'20179,638,882'Spooling cable'20179,459,425'Spooling cable'20169,442,265'Optical fiber management system'20169,400,364'Multiport optical fiber terminal'20169,383,539'Pushable multi-fiber connector'20169,297,976'Optical fiber connector'20169,039,293'Multiport optical fiber terminal'20158,374,477'Modular optical fiber cassettes'20138,059,932'Modular optical fiber cassette'20117,945,138'Modular optical fiber cassette'20117,751,674'Modular optical fiber cassettes and fiber management methods'20107,230,981'Integrated data jitter generator for the testing of high-speed serial interfaces'20077,105,053'Energy efficient method for growing polycrystalline silicon'20066,809,564'Clock generator for an integrated circuit with a high-speed serial interface'20046,762,901'Back electromotive force voltage compensation method for switched, voltage-mode driver circuit'20046,735,038'Supply variance compensation method for switched voltage mode voice coil motor driver circuit'20046,617,817'Electrical time constant compensation method for switched, voltage-mode driver circuit'20036,608,483'Quadrature differential charge commutation sensor enabling wide bandwith field mills and other electrostatic field measuring devices'20036,583,715'Method and system for unlocking and/or opening at least one openable member of a motor vehicle'20036,584,516'High-speed servo data interface system'20036,320,711'High-speed unified data interface for a read channel in a disk drive system'20016,317,009'Frequency shift key modulating oscillator'20016,225,873'Frequency shift key modulating oscillator'20016,163,814'High speed servo data interface system for transferring high resolution servo position data through a data bus'20006,054,828'Circuitry and methods for adjusting and switching the gain of a digital-to-analog converter in a disk drive'20005,920,234'Buffered oscillator transmitter arrangement for power specific applications having parasitic impedances'19995,859,572'Oscillator and transmitter arrangement for power specific applications having parasitic impedances'19995,764,952'Diagnostic system including a LSI or VLSI integrated circuit with a diagnostic data port'19985,703,584'Analog data acquisition system'19975,699,021'Balanced and buffered oscillator and transmitter arrangement'19975,684,972'Programmable servo burst sequencer for a disk drive'19975,657,283'Diagnostic data port for a LSI or VLSI integrated circuit'19975,640,538'Programmable timing mark sequencer for a disk drive'19975,640,583'Programmable servo burst decoder'19975,568,095'Balanced oscillator and transmitter arrangement'19965,563,799'Low cost/low current watchdog circuit for microprocessor'19965,544,107'Diagnostic data port for a LSI or VLSI integrated circuit'19965,486,793'Balanced RF oscillator and transmitter'19965,191,610'Remote operating system having secure communication of encoded messages and automatic re-synchronization'19934,539,608'Low offset position demodular'19854,502,021'Constant bandwidth automatic gain control system'19854,480,217'Automatic velocity calibrator for a velocity servo loop in a magnetic disk drive'19844,321,517'Resonance suppression method'19824,126,915'Apparatus for stripping card flats and the like'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–1997Patents assigned to UNITED TECHNOLOGIES AUTOMOTIVE (5)· patent assignee history
1993–2001Based in Westland, MI, US· patent location history
1996–1998Patents assigned to ADAPTEC INC (7)· patent assignee history
1996–2007Based in Nederland, CO, US· patent location history
2000–2003Patents assigned to ST MICROELECTRONICS NV (4)· patent assignee history
2004–2007Patents assigned to ST MICROELECTRONICS INC (4)· patent assignee history
2010–2021Patents assigned to CLEARFIELD INC (26)· patent assignee history
2013–2020Based in Andover, MN, US· patent location history
2015–2016Based in Plymouth, MN, US· patent location history
2019–2021Based in Oak Grove, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CLEARFIELD INC262010–2021
ADAPTEC INC71996–1998
UNITED TECHNOLOGIES AUTOMOTIVE51993–1997
ST MICROELECTRONICS INC42004–2007
ST MICROELECTRONICS NV42000–2003
Locations
LocationPatentsSpan
Nederland, CO, US171996–2007
Andover, Minnesota, US162013–2020
Westland, MI, US91993–2001
Oak Grove, Minnesota, US72019–2021
Plymouth, Minnesota, US32015–2016