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Inventor

Daniel K. Freeman

Inventor
Reading, MA, US

Overview

11→
Patents
1991–2021
Patent span
Physics
Primary field (CPC G)

Patents· 11 as inventor

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

A61Bprimary
A61BDiagnosis29%
G10LSpeech analysis techniques or speech synthesis29%
A61NElectrotherapy14%
G01RMeasuring electric variables14%
G06FElectric digital data processing7%
H02NElectric machines not otherwise provided for7%
PatentTitleYear
11,103,190Circuits and methods for electrosurgical unit signal detection202110,859,620Miniature electric field detector202010,603,502Implantable wireless microstimulator for peripheral nerves202010,531,805Biophysical sensing systems and methods using non-contact electric field detectors202010,390,727Apparatus and method for imaging currents using nanoparticles and low-field magnetic resonance imaging (MRI)201910,039,923Neural implant for microstimulation20186,016,468'Generating the variable control parameters of a speech signal synthesis filter'20005,937,188'Instruction creation device'1999RE035057'Speech coding using sparse vector codebook and cyclic shift techniques'19955,276,765'Voice activity detection'19944,991,214'Speech coding using sparse vector codebook and cyclic shift techniques'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2000Patents assigned to BRITISH TELECOMM (5)· patent assignee history
1991–1995Based in Ipswich, GB· patent location history
1999–2000Based in Suffolk, GB· patent location history
2018–2020Patents assigned to CHARLES STARK DRAPER LABORATORY INC (5)· patent assignee history
2018–2021Based in Reading, MA, US· patent location history
2019Patents assigned to MASSACHUSETTS GEN HOSPITAL (1)· patent assignee history
2020Patents assigned to UNIV TEXAS (1)· patent assignee history
2021Patents assigned to DRAEGERWERK AG & CO KGAA (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BRITISH TELECOMM51991–2000
CHARLES STARK DRAPER LABORATORY INC52018–2020
DRAEGERWERK AG & CO KGAA12021
MASSACHUSETTS GEN HOSPITAL12019
UNIV TEXAS12020
Locations
LocationPatentsSpan
Reading, Massachusetts, US62018–2021
Ipswich, GB31991–1995
Suffolk, GB21999–2000