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Inventor

Daniel W. Griffin

Inventor
Hollis, NH, US

Overview

11→
Patents
1989–2019
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.

G10Lprimary
G10LSpeech analysis techniques or speech synthesis77%
A62BDevices, apparatus or methods for life-saving8%
G06FElectric digital data processing8%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers8%
PatentTitleYear
10,210,875Audio watermarking via phase modification20199,990,928Audio watermarking via phase modification20188,433,562'Speech coder that determines pulsed parameters'20138,265,937'Breathing apparatus speech enhancement using reference sensor'20128,036,886'Estimation of pulsed speech model parameters'20116,912,495'Speech model and analysis, synthesis, and quantization methods'20055,826,222'Estimation of excitation parameters'19985,754,974'Spectral magnitude representation for multi-band excitation speech coders'19985,715,365'Estimation of excitation parameters'19985,701,390'Synthesis of MBE-based coded speech using regenerated phase information'19974,866,663'Simulation system'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to SANDERS ASSOCIATES INC (1)· patent assignee history
1989–2019Based in Hollis, NH, US· patent location history
1997–2019Patents assigned to DIGITAL VOICE SYSTEMS INC (10)· patent assignee history
2012–2013Patents assigned to GRIFFIN DANIEL W (2)· patent assignee history
2012Patents assigned to HARDWICK JOHN C (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DIGITAL VOICE SYSTEMS INC101997–2019
GRIFFIN DANIEL Wself22012–2013
HARDWICK JOHN C12012
SANDERS ASSOCIATES INC11989
Locations
LocationPatentsSpan
Hollis, NH, US111989–2019