Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Petro Vlahos — 15 Patents

ULUltimate: 6 patents #3 of 13Top 25%
IMImatte: 2 patents #4 of 5Top 80%
Calabasas, CA: #226 of 4,119 inventorsTop 6%
California: #40,789 of 386,348 inventorsTop 15%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Petro Vlahos has been granted 15 US patents while listed as an inventor at Ultimate. The first was granted in 1980 and the most recent in May 2009. Petro Vlahos ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Petro Vlahos in Calabasas, CA, US.

Patents per Year

Patents granted per year, 1980 to 2009Bar chart with a peak of 2 patents in 1982.peak 21980: 1 patents19801982: 2 patents1983: 1 patents19831986: 2 patents1991: 1 patents19911995: 1 patents1996: 1 patents19961998: 2 patents2002: 1 patents20022003: 2 patents2009: 1 patents2009

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
7530954 Method and apparatus for identifying the valid systolic blood pressure of a person with hardened arteries 2009-05-12
6616281 Visible-invisible background prompter Paul Vlahos 2003-09-09
6538396 Automatic foreground lighting effects in a composited scene Paul Vlahos, Allen Dadourian, Joseph Parker 2003-03-25
6361173 Method and apparatus for inhibiting projection of selected areas of a projected image Paul Vlahos, Arpag Dadourian 2002-03-26
5831685 Backing color and luminance nonuniformity compensation Paul Vlahos 1998-11-03
5742354 Method for generating non-visible window edges in image compositing systems Paul Vlahos 1998-04-21
5515109 Backing color and luminance nonuniformity compensation Paul Vlahos 1996-05-07
5424781 Backing color and luminance nonuniformity compensation for linear image compositing 1995-06-13
5032901 Backing color and luminance nonuniformity compensation for linear image compositing 1991-07-16
4625231 Comprehensive electronic compositing system 1986-11-25
4589013 Automated encoded signal color image compositing Paul Vlahos, David Fellinger 1986-05-13
4409611 Encoded signal color image compositing 1983-10-11
4344085 Comprehensive electronic compositing system 1982-08-10
4338165 Method of making a high-gain projection screen 1982-07-06
4235513 High-gain projection screen 1980-11-25