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USPTO Patent Rankings Data through Dec 31, 2025
Home › Polhemus › Igor Khalfin
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Igor Khalfin — 7 Patents

POPolhemus: 5 patents #1 of 4Top 25%
PEPenumbra: 1 patents #38 of 89Top 45%
SESixense Entertainment: 1 patents #11 of 12Top 95%
Pleasanton, CA: #828 of 3,062 inventorsTop 30%
California: #83,669 of 386,348 inventorsTop 25%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Igor Khalfin has been granted 7 US patents while listed as an inventor at Polhemus. The first was granted in 2002 and the most recent in August 2022. Igor Khalfin ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Igor Khalfin in Pleasanton, CA, US.

Patents per Year

Patents granted per year, 2002 to 2022Bar chart with a peak of 3 patents in 2002.peak 32002: 3 patents20022003: 1 patents20032004: 1 patents20042016: 1 patents20162022: 1 patents2022

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11428546 Method and apparatus for synchronizing multiple magnetic tracking systems Amir Rubin, Oded Zur 2022-08-30 $63,591,000
9459124 Electromagnetic tracker (AC) with extended range and distortion compensation capabilities employing multiple transmitters Amir Rubin 2016-10-04
6762600 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation employing a modulated signal — 2004-07-13
6624626 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation employing modulated signal — 2003-09-23
6400139 Methods and apparatus for electromagnetic position and orientation tracking with distortion compensation Herbert R. Jones 2002-06-04
6377041 Method and apparatus for determining electromagnetic field characteristics within a volume Herbert R. Jones 2002-04-23
6369564 Electromagnetic position and orientation tracking system with distortion compensation employing wireless sensors Herbert Stephen Jones 2002-04-09

Frequent Collaborators

Amir Rubin2 shared
Herbert R. Jones2 shared
Oded Zur1 shared
Herbert Stephen Jones1 shared

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