Ernest V. Johnson — 2 Patents at Quantum

Ernest V. Johnson has been granted 2 US patents while listed as an inventor at Quantum. The first was granted in 1990 and the most recent in August 1995. Ernest V. Johnson ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Ernest V. Johnson in Phillipston, MA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5444587	Method and apparatus for attaching metallic and ceramic materials	Allen R. Creamer, Edward Mills	1995-08-22	$6,756,000
4949194	Ceramic support arm for movably positioning transducers	John MacPherson	1990-08-14

Ernest V. Johnson — 2 Patents

Issued Patents All Time

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