RG

Ronald E. Graf

📍 Greensboro, NC: #119 of 1,557 inventorsTop 8%
🗺 North Carolina: #4,713 of 45,564 inventorsTop 15%
Overall (All Time): #459,463 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
10072665 Multistage compressors and reverse compressors comprising a series of centrifugal pumps alternating flow toward and away from axle with better flow transitions between stages 2018-09-11
8087247 Heat engine/ heat pump using centrifugal fans 2012-01-03
7874175 Heat engine / heat pump using centrifugal fans 2011-01-25
4371753 Miniature fluid-controlled switch 1983-02-01
4356500 Droplet control aspects--ink evaporation reduction; low voltage contact angle control device; droplet trajectory release modes; uses for metallic ink drops in circuit wiring and press printing 1982-10-26
4286627 Vortex chamber controlling combined entrance exit 1981-09-01
4283730 Droplet control aspects--ink evaporation reduction; low voltage contact angle control device; droplet trajectory release modes; uses for metallic ink drops in circuit wiring and press printing 1981-08-11
4264798 Electrostatic switch 1981-04-28
4264910 Electrostatically controlled and segmented liquid ribbon 1981-04-28
4249188 Uncharged ink drop rastering, monitoring, and control 1981-02-03
4205975 Methods of making a sunlight admitting heat impeding panel 1980-06-03