Inventor

Peter W. Richards

Inventor

San Francisco, CA, US

Overview

2002–2021

Patent span

Physics

Primary field (CPC G)

Patents· 68 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A61Bprimary

A61BDiagnosis15%

G02BOptical elements, systems or apparatus13%

G06FElectric digital data processing11%

G09GArrangements or circuits for control of indicating devices using static means to present variable information11%

H04NPictorial communication, e.g. television6%

G11CStatic stores4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

B82YSpecific uses or applications of nanostructures4%

H03KPulse technique4%

H04LTransmission of digital information, e.g. telegraphic communication4%

PatentTitleYear

10,966,643Wearable non-invasive carbon monoxide inhalation tracking2021 10,965,285Multiple controllers for a capacitive sensing device2021 10,918,289Ring for optically measuring biometric data2021 10,874,345Automated detection of breathing disturbances2020 10,817,096Force sensor incorporated into display2020 10,806,362Integrated ECG electrode and antenna radiator2020 10,624,542Circuits and methods for photoplethysmographic sensors2020 10,568,525Multi-wavelength pulse oximetry2020 10,540,036Multiple controllers for a capacitive sensing device2020 10,512,407Heart rate data collection2019 10,433,739Multi-channel photoplethysmography sensor2019 10,386,970Force determination based on capacitive sensing2019 10,282,014Operating multiple functions in a display of an electronic device2019 10,219,711Circuits and methods for photoplethysmographic sensors2019 10,185,446Touch sensor arrays with integrated inter-layer contacts2019 10,168,814Force sensing based on capacitance changes2019 10,162,444Force sensor incorporated into display2018 10,139,959Self-calibration of force sensors and inertial compensation2018 9,990,087Compensation for nonlinear variation of gap capacitance with displacement2018 9,983,715Force detection in touch devices using piezoelectric sensors2018 9,891,759'Frustrated total internal reflection and capacitive sensing'2018 9,851,828Touch force deflection sensor2017 9,775,548'Heart rate sensor with high-aspect-ratio photodetector element'2017 9,763,584'Intermeshing light barrier features in optical physiological parameter measurement device'2017 9,757,046'Intermeshing light barrier features in optical physiological parameter measurement device'2017 9,743,849'Intermeshing light barrier features in optical physiological parameter measurement device'2017 9,743,838'Circuits and methods for photoplethysmographic sensors'2017 9,730,644'Circuits and methods for selecting a mode of operation of a photoplethysmographic sensor'2017 9,662,053'Physiological data collection'2017 9,660,646'Multiple controllers for a capacitive sensing device'2017 9,402,552'Heart rate data collection'2016 9,392,946'Heart rate sensor with high-aspect-ratio photodetector element'2016 9,282,902'Heart rate data collection'2016 9,261,696'Micromirror array assembly'2016 9,044,149'Heart rate data collection'2015 9,042,132'Noise suppression circuit for power adapter'2015 9,014,790'Heart rate data collection'2015 8,797,282'Touch sensor with secondary sensor and ground shield'2014 8,693,082'Micromirror array assembly with in-array pillars'2014 7,999,833'Deinterleaving transpose circuits in digital display systems'2011 7,787,170'Micromirror array assembly with in-array pillars'2010 7,751,114'System and apparatus for repairing micromirrors in spatial light modulators'2010 7,498,648'Mirror-based projection system with a programmable control unit for controlling a spatial light modulator'2009 7,499,065'Asymmetrical switching delay compensation in display systems'2009 7,483,126'Performance analyses of micromirror devices'2009 7,459,333'Method for making a micromirror-based projection system with a programmable control unit for controlling a spatial light modulator'2008 7,375,873'Method of repairing micromirrors in spatial light modulators'2008 7,315,294'Deinterleaving transpose circuits in digital display systems'2008 7,307,775'Methods for depositing, releasing and packaging micro-electromechanical devices on wafer substrates'2007 7,221,498'Methods and apparatus for selectively updating memory cell arrays'2007 7,215,458'Deflection mechanisms in micromirror devices'2007 7,212,359'Color rendering of illumination light in display systems'2007 7,196,684'Spatial light modulator with charge-pump pixel cell'2007 7,167,148'Data processing methods and apparatus in digital display systems'2007 7,131,762'Color rendering of illumination light in display systems'2006 7,057,674'Projection display with full color saturation and variable luminosity'2006 7,027,205'Methods and apparatus for selectively updating memory cell arrays'2006 7,012,592'Spatial light modulator with charge-pump pixel cell'2006 6,980,197'Integrated driver for use in display systems having micromirrors'2005 6,958,846'Spatial light modulators with light absorbing areas'2005 6,950,217'Spatial light modulators having photo-detectors for use in display systems'2005 6,888,521'Integrated driver for use in display systems having micromirrors'2005 6,856,447'Methods and apparatus for selectively updating memory cell arrays'2005 6,809,977'Method for reading and writing memory cells of spatial light modulators used in display systems'2004 6,756,976'Monochrome and color digital display systems and methods for implementing the same'2004 6,726,333'Projection display with multiply filtered light'2004 6,523,961'Projection system and mirror elements for improved contrast ratio in spatial light modulators'2003 6,388,661'Monochrome and color digital display systems and methods'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002–2006Patents assigned to REFLECTIVITY INC (13)· patent assignee history

2002–2016Based in Menlo Park, CA, US· patent location history

2003–2007Based in Palo Alto, CA, US· patent location history

2005–2021Based in San Francisco, CA, US· patent location history

2006–2016Patents assigned to TEXAS INSTRUMENTS INC (18)· patent assignee history

2014–2021Patents assigned to APPLE INC (16)· patent assignee history

2014–2019Patents assigned to RICHARDS PETER W (3)· patent assignee history

2015–2021Patents assigned to FITBIT INC (21)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FITBIT INC	21	2015–2021
TEXAS INSTRUMENTS INC	18	2006–2016
APPLE INC	16	2014–2021
REFLECTIVITY INC	13	2002–2006
RICHARDS PETER Wself	3	2014–2019

Locations

Location	Patents	Span
San Francisco, California, US	49	2005–2021
Menlo Park, California, US	11	2002–2016
Palo Alto, California, US	8	2003–2007