John C. Orth — 2 Patents at Unknown

John C. Orth has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 1992 and the most recent in September 1993. John C. Orth ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John C. Orth in Bozeman, MT, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5246470	Removal of sulfur from coal and pitch with dolomite	Lloyd Berg, John Berg	1993-09-21
5125932	Dissolution of coal with petroleum pitch	Lloyd Berg	1992-06-30

John C. Orth — 2 Patents

Issued Patents All Time

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