Inventor
Charles John Razzell
Inventor
Pleasanton, CA, US
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission22%
H04LTransmission of digital information, e.g. telegraphic communication20%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution7%
H02JElectric power networks4%
H02SGeneration of electric power by conversion of infrared radiation, visible light or ultraviolet light, e.g. using photovoltaic [pv] modules4%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner4%
H03DDemodulation or transference of modulation from one carrier to another4%
H03FAmplifiers4%
H04JMultiplex communication4%
G01RMeasuring electric variables2%
PatentTitleYear
10,985,843Systems and methods for polarization control using blind source separation202110,777,851Multipoint communication systems for battery management systems, and associated systems and methods202010,777,697Photovoltaic assemblies capable of communicating an event occurrence, and associated systems and methods202010,735,104Systems and methods for analog electronic polarization control for coherent optical receivers202010,680,717Systems and methods for polarization control using blind source separation202010,187,115Systems and methods for DC power line communication in a photovoltaic system20199,231,538'Energy efficient, low distortion amplification apparatus'20168,958,769'Direct conversion receiver for angle modulated signals'20158,442,171'Digital correction of analog polyphase filters'20138,126,096'System, apparatus, and method for multi-band OFDM systems with receiver antenna selection per sub-band'20126,975,692'Scaling of demodulated data in an interleaver memory'20056,954,486'Early-late detection'20056,901,105'Tracking of a multi-path resolved signal in a rake receiver'20056,002,725'M-ary FSK receiver'19995,892,803'Determination of symbol sample timing using soft decisions'19995,428,643'Method of, and transmitter for, transmitting a digital signal'19954,712,073'Frequency multiplying circuit'19874,638,263'Voltage controlled oscillator including two variable gain feedback circuits'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1999Patents assigned to PHILIPS CORP (5)· patent assignee history
1987–1999Based in Cambridge, GB· patent location history
1999–2021Based in Pleasanton, CA, US· patent location history
2005–2012Patents assigned to KONINKL PHILIPS ELECTRONICS NV (3)· patent assignee history
2012Patents assigned to BIRRU DAGNACHEW (1)· patent assignee history
2012Based in Pleasenton, CA, US· patent location history
2013–2021Patents assigned to MAXIM INTEGRATED PRODUCTS (9)· patent assignee history
2013–2015Patents assigned to RAZZELL CHARLES JOHN (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MAXIM INTEGRATED PRODUCTS | 9 | 2013–2021 |
| PHILIPS CORP | 5 | 1987–1999 |
| KONINKL PHILIPS ELECTRONICS NV | 3 | 2005–2012 |
| RAZZELL CHARLES JOHNself | 2 | 2013–2015 |
| BIRRU DAGNACHEW | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Pleasanton, California, US | 13 | 1999–2021 |
| Cambridge, GB | 4 | 1987–1999 |
| Pleasenton, California, US | 1 | 2012 |