Inventor
David H. Shen
Inventor
Saratoga, CA, US
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission15%
H03DDemodulation or transference of modulation from one carrier to another12%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy9%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution9%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner6%
H03FAmplifiers6%
H03JTuning resonant circuits6%
H03KPulse technique6%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses6%
G01RMeasuring electric variables3%
PatentTitleYear
10,868,580Ethernet link transmit power method based on alien crosstalk feedback20209,746,505'Radio frequency energy detection'20179,712,261'Apparatus and method of background temperature calibration'20179,680,478'Initializing a ring counter'20178,970,287'Apparatus and method of adjusting analog parameters for extended temperature operation'20157,982,539'High resolution variable gain control'20117,970,811'Continuous-time multi-gigahertz filter using transmission line delay elements'20117,657,246'Techniques for passive subharmonic mixing'20107,649,416'Load inductor sharing'20107,646,325'Analog to digital converter'20107,639,088'Phase-locked loop start-up techniques'20097,639,092'Crystal oscillator frequency tuning circuit'20097,532,079'Digital tuning of crystal oscillators'20097,521,976'Low power high speed latch for a prescaler divider'20097,474,885'Passive subharmonic mixer'20097,299,020'Tunable multi-band receiver by on-chip selectable filtering'20077,248,850'Passive subharmonic mixer design'20077,015,736'Symmetric charge pump'20065,942,932'Circuit and method for preventing latch-up in a CMOS semiconductor device'19995,815,452'High-speed asynchronous memory with current-sensing sense amplifiers'19985,640,698'Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion'19975,427,872'Dendrite preventing separator for secondary lithium batteries'19955,030,528'Mixed solvent electrolytes for ambient temperature secondary lithium cells'19914,550,064'High cycle life secondary lithium battery'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–1991Patents assigned to CALIFORNIA INST OF TECHN (2)· patent assignee history
1985Based in Rosemead, CA, US· patent location history
1991–1995Based in Arcadia, CA, US· patent location history
1997–2020Based in Saratoga, CA, US· patent location history
1999–2009Patents assigned to NANOAMP SOLUTIONS INC (4)· patent assignee history
2009–2011Patents assigned to NANOAMP MOBILE INC (6)· patent assignee history
2009Patents assigned to NANOAMP SOLUTIONS INC CAYMAN (2)· patent assignee history
2009–2011Based in San Jose, CA, US· patent location history
2015–2017Patents assigned to SILICON LAB INC (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NANOAMP MOBILE INC | 6 | 2009–2011 |
| NANOAMP SOLUTIONS INC | 4 | 1999–2009 |
| SILICON LAB INC | 4 | 2015–2017 |
| CALIFORNIA INST OF TECHN | 2 | 1985–1991 |
| NANOAMP SOLUTIONS INC CAYMAN | 2 | 2009 |
Locations
| Location | Patents | Span |
|---|---|---|
| Saratoga, California, US | 15 | 1997–2020 |
| San Jose, California, US | 6 | 2009–2011 |
| Arcadia, California, US | 2 | 1991–1995 |
| Rosemead, California, US | 1 | 1985 |