Inventor
John D. Marshall
Inventor
Campbell, CA, US
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis32%
G01NInvestigating or analysing materials by determining their chemical or physical properties15%
G01SRadio direction-finding15%
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general9%
G10KSound-producing devices6%
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons3%
B01DSeparation3%
G01RMeasuring electric variables3%
H01RElectrically-conductive connections3%
H02HEmergency protective circuit arrangements3%
PatentTitleYear
9,271,696'Ultrasound imaging systems with bias circuitry and methods of making and using'20168,946,972'Layer switching for an ultrasound transducer array'20158,206,308'Shielding for intravascular ultrasound imaging systems and methods of making and using'20128,197,413'Transducers, devices and systems containing the transducers, and methods of manufacture'20127,837,626'Contrast agent manipulation with medical ultrasound imaging'20107,481,577'Ultrasound transducer fault measurement method and system'20097,266,987'Ultrasound transmit and receive path calibration methods and systems'20077,162,912'Ultrasound transmit and receive path calibration methods and systems'20077,156,551'Ultrasound transducer fault measurement method and system'20077,125,482'Use of electrochemistry to detect buried service lead (Pb) and copper (Cu) water pipes'20066,270,460'Apparatus and method to limit the life span of a diagnostic medical ultrasound probe'20016,196,649'Convertible surgical equipment and appliance support system'20016,122,538'Motion--Monitoring method and system for medical devices'20005,995,348'Ground safety device for medical ultrasound probes'19995,776,065'Apparatus and method for controlling an ultrasound transducer array'19985,542,425'Apparatus and method for preventing contact damage in electrical equipment'19964,876,002'Reverse osmosis water purificaiton unit'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2001Based in Montgomery, AL, US· patent location history
1996–2001Patents assigned to ACUSON (5)· patent assignee history
1996–2001Based in Redwood City, CA, US· patent location history
2006Based in Fallston, MD, US· patent location history
2007–2015Patents assigned to SIEMENS MEDICAL SOLUTIONS (6)· patent assignee history
2007–2010Based in Campbell, CA, US· patent location history
2012–2016Patents assigned to BOSTON SCIENT SCIMED INC (3)· patent assignee history
2012Patents assigned to MARSHALL JOHN D (2)· patent assignee history
2012Patents assigned to CARIOGGIA JOE (1)· patent assignee history
2012–2016Based in Los Gatos, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SIEMENS MEDICAL SOLUTIONS | 6 | 2007–2015 |
| ACUSON | 5 | 1996–2001 |
| BOSTON SCIENT SCIMED INC | 3 | 2012–2016 |
| MARSHALL JOHN Dself | 2 | 2012 |
| CARIOGGIA JOE | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Campbell, California, US | 5 | 2007–2010 |
| Redwood City, California, US | 5 | 1996–2001 |
| Los Gatos, California, US | 4 | 2012–2016 |
| Montgomery, AL, US | 2 | 1989–2001 |
| Fallston, Maryland, US | 1 | 2006 |