Inventor
Douglas L. Richards
Inventor
Stilwell, KS, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission43%
H04LTransmission of digital information, e.g. telegraphic communication14%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers14%
G01MTesting static or dynamic balance of machines or structures7%
H03MCoding7%
H04WWireless communication networks7%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use7%
PatentTitleYear
9,241,316'System and procedure to reduce the power consumption of a mobile device through automated disabling of RF filters'20168,189,839'Hearing device improvements using modulation of acoustically coupled signals at middle ear resonance'20128,059,958'Measurement of polarization dependent loss in an optical transmission system'20117,788,547'Systems and methods for generation of communication channel fault information'20107,616,771'Acoustic coupler for skin contact hearing enhancement devices'20097,394,980'Systems and methods for testing a circuit in a communication network'20087,221,871'Identification of polarization-mode dispersion on a communication network'20076,907,196'Arrangement and method for testing fiber optic telecommunications circuits over dense wavelength division multiplexing (DWDM)'20056,879,827'Testing a communication network with a shared test port'20056,781,679'Identifying a polarization-mode dispersion event'20046,778,778'Arrangement and method for testing fiber optic telecommunications circuits over dense wavelength division multiplexing (DWDM)'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2011Patents assigned to SPRINT COMMUNICATIONS CO (8)· patent assignee history
2004–2011Based in Stilwell, KS, US· patent location history
2009–2012Patents assigned to UNIV VIRGINIA COMMONWEALTH (2)· patent assignee history
2009–2012Based in Virginia Beach, VA, US· patent location history
2011Patents assigned to HUI RONGQING (1)· patent assignee history
2011Patents assigned to JIANG JUNFENG (1)· patent assignee history
2012Patents assigned to LENHARDT MARTIN (1)· patent assignee history
2016Based in Stillwell, KS, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SPRINT COMMUNICATIONS CO | 8 | 2004–2011 |
| UNIV VIRGINIA COMMONWEALTH | 2 | 2009–2012 |
| HUI RONGQING | 1 | 2011 |
| JIANG JUNFENG | 1 | 2011 |
| LENHARDT MARTIN | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Stilwell, KS, US | 8 | 2004–2011 |
| Virginia Beach, Virginia, US | 2 | 2009–2012 |
| Stillwell, KS, US | 1 | 2016 |