Resources Contact Us Home
Higgins; Robert F.
South Burlington, VT
No. of patents:

Patent Number Title Of Patent Date Issued
8121812 AC magnetic tracking with phase disambiguation February 21, 2012
A method and system for magnetic locating resolves phase ambiguity. The system uses time-division multiplexed magnetic fields emitted from plural transmit coils. The magnetic fields are alternating fields at a carrier frequency, and the fields emitted from different coils in different
8013595 AC magnetic tracking system with phase locking September 6, 2011
Plural transmitter coils of a magnetic locating system are driven with widely-separated main frequencies. One of the transmitter coils is also driven with a marker frequency close to the main frequency applied to that coil. The receiver determines a phase relationship with the transm

  Recently Added Patents
Oscillator circuit which compensates for external voltage supply, temperature and process
Location estimation of wireless terminals through pattern matching of deduced signal strengths
Extensible, filtered lists for mobile device user interface
Decontamination apparatus and method
Systems and methods for excluding undesirable network transactions
Polypropylene bottles
Determination and presentation of package pricing offers in response to customer interest in a product
  Randomly Featured Patents
Purification of anthocyan solutions
Vapor permeable poly(etherimide) ester elastomer films
Clinch-type blind nut
Fountain construction with lighting means
Wall constructions
Forgery-preventive fretwork paper
Video encoder transmitting extracted image to exterior during encoding process
Methods of administering and enhancing absorption of pharmaceutical agents
Efficient tile-based rasterization
Ferrule holder and associated fiber optic connector having anti-withdrawal and anti-rotation features