LexDanaLexDanabeta
Inventor

James J. Spilker, Jr.

Inventor
Woodside, CA, US

Overview

37→
Patents
1982–2014
Patent span
Physics
Primary field (CPC G)

Patents· 37 as inventor

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

G01Sprimary
G01SRadio direction-finding29%
H04NPictorial communication, e.g. television21%
A63FCard, board, or roulette games20%
G01CMeasuring distances, levels or bearings11%
H04HBroadcast communication4%
H04BTransmission3%
H04KSecret communication3%
H04WWireless communication networks2%
H03JTuning resonant circuits1%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses1%
PatentTitleYear
8,754,807'Time, frequency, and location determination for femtocells'20148,677,440'Position determination using ATSC-M/H signals'20148,233,091'Positioning and time transfer using television synchronization signals'20128,149,168'Position determination using wireless local area network signals and television signals'20128,102,317'Location identification using broadcast wireless signal signatures'20127,792,156'ATSC transmitter identifier signaling'20107,733,270'Position location using global positioning signals augmented by broadcast television signals'20107,471,244'Monitor units for television signals'20087,463,195'Position location using global positioning signals augmented by broadcast television signals'20087,372,405'Position location using digital video broadcast television signals'20087,126,536'Position location using terrestrial digital video broadcast television signals'20067,042,396'Position location using digital audio broadcast signals'20067,042,949'Robust data transmission using broadcast digital television signals'20066,970,132'Targeted data transmission and location services using digital television signaling'20056,963,306'Position location and data transmission using pseudo digital television transmitters'20056,961,020'Position location using broadcast analog television signals'20056,952,182'Position location using integrated services digital broadcasting—terrestrial (ISDB-T) broadcast television signals'20056,917,328'Radio frequency device for receiving TV signals and GPS satellite signals and performing positioning'20056,914,560'Position location using broadcast digital television signals comprising pseudonoise sequences'20056,879,286'Position location using ghost canceling reference television signals'20056,861,984'Position location using broadcast digital television signals'20056,859,173'Position location using broadcast television signals and mobile telephone signals'20056,839,024'Position determination using portable pseudo-television broadcast transmitters'20056,753,812'Time-gated delay lock loop tracking of digital television signals'20046,727,847'Using digital television broadcast signals to provide GPS aiding information'20046,717,547'Position location using broadcast television signals and mobile telephone signals'20046,559,800'Position location using broadcast analog television signals'20036,522,297'Position location using ghost canceling reference television signals'20036,058,135'Quasi-optimal receiver for tracking and acquisition of a split spectrum PN GPS C/A signal'20006,044,071'Signal structure for global positioning systems'20005,815,046'Tunable digital modulator integrated circuit using multiplexed D/A converters'19985,625,363'Paging/messaging system using GPS satellites'19975,477,195'Near optimal quasi-coherent delay lock loop (QCDLL) for tracking direct sequence signals and CDMA'19955,398,034'Vector delay lock loop processing of radiolocation transmitter signals'19954,363,130'Binary digital communication system'19824,326,292'Random energy communication system'19824,324,002'Delay-modulated random energy intelligence communication system'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Based in Palo Alto, CA, US· patent location history
1995–2000Patents assigned to STANFORD TELECOMM INC (4)· patent assignee history
1995–2014Based in Woodside, CA, US· patent location history
2000Based in Woodland, CA, US· patent location history
2003–2010Patents assigned to ROSUM CORP (23)· patent assignee history
2012–2014Patents assigned to RABINOWITZ MATTHEW (5)· patent assignee history
2012–2014Patents assigned to SPILKER JR JAMES J (5)· patent assignee history
2012–2014Patents assigned to TRUEPOSITION INC (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ROSUM CORP232003–2010
RABINOWITZ MATTHEW52012–2014
SPILKER JR JAMES Jself52012–2014
TRUEPOSITION INC52012–2014
STANFORD TELECOMM INC41995–2000
Locations
LocationPatentsSpan
Woodside, California, US331995–2014
Palo Alto, California, US31982
Woodland, California, US12000