David W. Trunko — 2 Patents at Halomet

David W. Trunko has been granted 2 US patents while listed as an inventor at Halomet. The first was granted in 1986 and the most recent in October 1987. David W. Trunko ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David W. Trunko in LaFayette, NY, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4698289	Process for making ferrite spherical particulate toner core from raw fly ash	Robert G. Aldrich, Geoffrey H. Earl	1987-10-06
4592988	Ferrite toner carrier core composition derived from fly ash	Robert G. Aldrich, Geoffrey H. Earl	1986-06-03

David W. Trunko — 2 Patents

Issued Patents All Time

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