JP

John C. Purkett

IBM: 2 patents #396 of 3,557Top 15%
📍 Longmont, CO: #8 of 104 inventorsTop 8%
🗺 Colorado: #172 of 1,967 inventorsTop 9%
Overall (1997): #35,044 of 185,788Top 20%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5615064 Pulsed current velocity controlled head load method and apparatus which uses the back EMF to control the generation of head actuator driving pulses Timothy J. Blank, Kevin J. Erickson, Richard Greenberg 1997-03-25
5596460 System and method for encoding a servo address Richard Greenberg 1997-01-21