LexDanaLexDanabeta
Inventor

Randolph K. Armstrong

Inventor
Houston, TX, US

Overview

55→
Patents
1988–2019
Patent span
Human necessities
Primary field (CPC A)

Patents· 55 as inventor

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

A61Nprimary
A61NElectrotherapy64%
A61BDiagnosis6%
A61MDevices for introducing media into, or onto, the body5%
H01FMagnets5%
H02JElectric power networks5%
G01RMeasuring electric variables4%
G16HHealthcare informatics, i.e. information and communication technology [ict] specially adapted for the handling or processing of medical or healthcare data3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
C23FNon-mechanical removal of metallic material from surface1%
G01MTesting static or dynamic balance of machines or structures1%
PatentTitleYear
10,449,277Cardiac support systems and methods for chronic use20199,839,732'Wireless power system'20179,802,048'Variable output ramping for an implantable medical device'20178,942,798'Alternative operation mode for an implantable medical device based upon lead condition'20158,901,775'Implantable wireless power system'20148,868,203'Dynamic lead condition detection for an implantable medical device'20148,694,118'Variable output ramping for an implantable medical device'20148,600,521'Implantable medical device having multiple electrode/sensor capability and stimulation based on sensed intrinsic activity'20138,565,881'Power supply monitoring for an implantable device'20138,565,867'Changeable electrode polarity stimulation by an implantable medical device'20138,560,070'Power supply monitoring for an implantable device'20138,554,332'Method and apparatus for integrating implantable medical device data'20138,551,163'Cardiac support systems and methods for chronic use'20138,532,773'Lead condition assessment for an implantable medical device'20138,478,420'Implantable medical device charge balance assessment'20138,437,853'Safe-mode operation of an implantable medical device'20138,428,731'Sequenced therapy protocols for an implantable medical device'20138,306,627'Dosing limitation for an implantable medical device'20128,260,426'Method, apparatus and system for bipolar charge utilization during stimulation by an implantable medical device'20128,190,258'Lead condition assessment for an implantable medical device'20128,165,693'Safe-mode implantable medical devices'20128,140,159'Safe-mode operation of an implantable medical device'20128,086,310'Power supply monitoring for an implantable device'20118,086,311'Method and apparatus for integrating implantable medical device data'20117,996,079'Input response override for an implantable medical device'20117,974,701'Dosing limitation for an implantable medical device'20117,974,688'Trained and adaptive response in a neurostimulator'20117,869,867'Implantable neurostimulator with refractory stimulation'20117,769,455'Power supply monitoring for an implantable device'20107,751,891'Power supply monitoring for an implantable device'20107,711,426'Power supply monitoring for an implantable device'20107,711,419'Neurostimulator with reduced size'20107,643,881'Neurostimulation with activation based on changes in body temperature'20107,567,840'Lead condition assessment for an implantable medical device'20097,561,918'Autocapture in a neurostimulator'20097,489,561'Implantable medical device with reconfigurable non-volatile program'20097,454,245'Trained and adaptive response in a neurostimulator'20087,366,571'Neurostimulator with activation based on changes in body temperature'20086,920,356'Tachycardia rate hysteresis for dual-chambered cardiac stimulators'20056,510,343'Methods and apparatus for tachycardia rate hysteresis for dual-chamber cardiac stimulators'20036,282,447'Cardiac stimulator with rate-adaptive PVARP'20016,233,485'Methods and apparatus for tachycardia rate hysteresis for dual-chamber cardiac stimulators'20015,873,897'Method and apparatus for dual chambered tachyarrhythmia classification and therapy'19995,861,009'Implantable cardiac stimulator with rate-adaptive T-wave detection'19995,772,692'Implantable medical device with automatic adjustment to externally generated shocks'19985,713,366'Method and apparatus for dual chamber cardiac analysis'19985,709,710'Implantable cardioverter/defibrillator with adaptive shock coupling interval and method'19985,607,455'Method and apparatus for automatic shock electrode enabling'19975,480,415'Apparatus for high speed data communication between an external medical device and an implantable medical device'19965,456,699'Cardiac stimulator lead insertion tool'19955,411,536'Method and apparatus for communicating data between medical devices to improve detectability of errors'19955,383,912'Apparatus for high speed data communication between an external medical device and an implantable medical device'19955,354,315'Cardiac stimulator with data converter for cardiac signal'19944,940,944'Cathodic protection analyzer in which the fundamental and odd harmonics of a power line frequency are removed'19904,776,206'Leak testing by gas flow signature analysis'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1990Based in Cincinnati, OH, US· patent location history
1994–2005Patents assigned to INTERMEDICS INC (10)· patent assignee history
1994–2005Based in Missouri City, TX, US· patent location history
2008–2017Patents assigned to CYBERONICS INC (34)· patent assignee history
2008–2019Based in Houston, TX, US· patent location history
2011–2015Patents assigned to ARMSTRONG RANDOLPH K (19)· patent assignee history
2012–2013Patents assigned to ARMSTRONG SCOTT A (7)· patent assignee history
2013–2019Patents assigned to EVERHEART SYSTEMS INC (4)· patent assignee history
2017Based in San Clemente, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CYBERONICS INC342008–2017
ARMSTRONG RANDOLPH Kself192011–2015
INTERMEDICS INC101994–2005
ARMSTRONG SCOTT A72012–2013
EVERHEART SYSTEMS INC42013–2019
Locations
LocationPatentsSpan
Houston, Texas, US372008–2019
Missouri City, Texas, US151994–2005
Cincinnati, OH, US21988–1990
San Clemente, California, US12017