Inventor
David L. Freeman
Inventor
Plano, TX, US
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Rprimary
G01RMeasuring electric variables27%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy20%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution20%
H02JElectric power networks18%
G01DMeasuring not specially adapted for a specific variable4%
G05FSystems for regulating electric or magnetic variables4%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems2%
H05BElectric heating2%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
PatentTitleYear
10,823,581Sensor power management20209,222,802'Sensor power management'20158,575,845'Method and apparatus to measure light intensity'20138,570,012'Diode for use in a switched mode power supply'20136,892,148'Circuit and method for measurement of battery capacity fade'20056,832,171'Circuit and method for determining battery impedance increase with aging'20046,789,026'Circuit and method for monitoring battery state of charge'20046,650,089'Control circuit for multiple battery systems with capacity gauge on end equipment'20036,577,135'Battery pack with monitoring function utilizing association with a battery charging system'20036,377,028'System for charging monitoring batteries for a microprocessor based method'20026,369,576'Battery pack with monitoring function for use in a battery charging system'20026,107,802'Battery pack with monitoring function utilizing association with a battery charging system'20005,965,997'Battery monitoring circuit with storage of charge and discharge accumulation values accessible therefrom'19995,744,942'Linear slewing regulator'19985,548,204'Linear/switching regulator circuit'19965,454,710'Display system for a battery monitoring circuit'19955,440,221'Method and apparatus for monitoring batttery capacity with charge control'19955,432,429'System for charging/monitoring batteries for a microprocessor based system'19955,357,203'Battery monitoring circuit for operating with high battery discharge rates'19945,284,719'Method and apparatus for monitoring battery capacity'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–1998Patents assigned to BENCHMARQ MICROELECT INC (6)· patent assignee history
1994–2003Based in Plano, TX, US· patent location history
1996–1999Patents assigned to BENCHMARQ MICROELECTRONICS (2)· patent assignee history
2002–2020Patents assigned to TEXAS INSTRUMENTS INC (11)· patent assignee history
2003–2020Based in McKinney, TX, US· patent location history
2004–2005Based in McKinley, TX, US· patent location history
2013–2015Patents assigned to CORSI MARCO (3)· patent assignee history
2013Patents assigned to FREEMAN DAVID L (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TEXAS INSTRUMENTS INC | 11 | 2002–2020 |
| BENCHMARQ MICROELECT INC | 6 | 1994–1998 |
| CORSI MARCO | 3 | 2013–2015 |
| BENCHMARQ MICROELECTRONICS | 2 | 1996–1999 |
| FREEMAN DAVID Lself | 2 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Plano, Texas, US | 12 | 1994–2003 |
| McKinney, Texas, US | 5 | 2003–2020 |
| McKinley, Texas, US | 3 | 2004–2005 |