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Stephen H. Verhoff — 6 Patents

SCSurface Combustion: 6 patents #3 of 31Top 10%
Toledo, OH: #235 of 1,470 inventorsTop 20%
Ohio: #13,600 of 73,341 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Stephen H. Verhoff has been granted 6 US patents while listed as an inventor at Surface Combustion. The first was granted in 1989 and the most recent in September 2007. Stephen H. Verhoff ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Stephen H. Verhoff in Toledo, OH, US.

Patents per Year

Patents granted per year, 1989 to 2007Bar chart with a peak of 2 patents in 2006.peak 21989: 1 patents19891992: 1 patents19922006: 2 patents20062007: 2 patents2007

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7267793 Furnace for vacuum carburizing with unsaturated aromatic hydrocarbons Ralph P. Poor, Gary W. Barbee, James E. Brug 2007-09-11
7204952 Vacuum furnace for carburizing with hydrocarbons Ralph P. Poor, Gary W. Barbee, James E. Brug 2007-04-17
7033446 Vacuum carburizing with unsaturated aromatic hydrocarbons Ralph P. Poor, Garry W. Barbee, James E. Brug 2006-04-25
6991687 Vacuum carburizing with napthene hydrocarbons Ralph P. Poor, Garry W. Barbee, James E. Brug 2006-01-31
5127967 Ion carburizing Garrol Tackett 1992-07-07
4853046 Ion carburizing Garrol Tackett 1989-08-01

Frequent Collaborators

James E. Brug4 shared
Ralph P. Poor4 shared
Gary W. Barbee2 shared
Garrol Tackett2 shared
Garry W. Barbee2 shared

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Michael F. Vollero6
Stefano Fracassi6
Uwe Gruenbeck6
Alexander Matrosov6
Rouzbeh Behnia6
Carole Chapelat6
Mina Sedaghat6
Martinus Johannes Donatus Brakkee6