John A. Persson has been granted 15 US patents while listed as an inventor at Lectromelt . The first was granted in 1981 and the most recent in November 2014. John A. Persson ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list John A. Persson in Gibsonia, PA, US.
Patents per Year Patents granted per year, 1981 to 2014 Bar chart with a peak of 3 patents in 1981. peak 3 1981: 3 patents 1981 1982: 2 patents 1982 1983: 2 patents 1983 1984: 3 patents 1984 1985: 1 patents 1985 1986: 2 patents 1986 2012: 1 patents 2012 2014: 1 patents 2014
Issued Patents All Time
Profile Widget
Showing 1–15 of 15 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
8893714 Expansion joints for panels in solar boilers Russell Ricci , Andrew Plotkin , Kevin Toupin 2014-11-25
8096268 Municipal solid waste fuel steam generator with waterwall furnace platens Arthur W. Cole , Robert Faia , Thomas P. Kelly , Frank J. Zone, JR. 2012-01-17
4620308 Arc furnace electrode control Ross E. Andrews , Michael A. Maola 1986-10-28
$207,000
4575856 Iron free self baking electrode — 1986-03-11
$323,000
4527817 Quick coupling device — 1985-07-09
4490825 Water-cooled electrode — 1984-12-25
4490169 Method for reducing ore — 1984-12-25
4447906 Arc furnace for producing aluminum — 1984-05-08
$573,000
4385930 Method of producing aluminum — 1983-05-31
$2,094,000
4375297 Quick coupling device — 1983-03-01
4353738 Lead smelting method — 1982-10-12
$495,000
4326093 Electrode contact assembly — 1982-04-20
$422,000
4307872 Apparatus for reducing ore — 1981-12-29
$387,000
4289537 Method of producing cement Howard Davis 1981-09-15
$478,000
4249952 Method for producing cement clinker from cement kiln waste dust Howard Davis 1981-02-10
$619,000