Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
ML

Mark C. Langenohl — 10 Patents

INIndresco: 5 patents #1 of 35Top 3%
HRHarbison-Walker Refractories: 3 patents #2 of 22Top 10%
RPResco Products: 2 patents #2 of 15Top 15%
Venetia, PA: #7 of 75 inventorsTop 10%
Pennsylvania: #8,192 of 74,527 inventorsTop 15%
Overall (All Time): #494,186 of 4,157,543Top 15%
10 Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
11584691 Jamb spray mixes including fused silica and methods of utilizing the mixes Thomas H. Gisewhite, Lynn G. McGregor 2023-02-21
10364187 Jamb spray mixes including fused silica and methods of utilizing the mixes Thomas H. Gisewhite, Lynn G. McGregor 2019-07-30
6268018 Method of applying a non-slumping pumpable castable high purity silica composition 2001-07-31
6190448 Non-slumping, pumpable castable high purity silica composition 2001-02-20
5753572 Castable and gunning composition with improved resistance to build-up and alkali infiltration Christopher L. Macey 1998-05-19
5549745 Non-slumping, pumpable castable and method of applying the same Gustav G. Hughes 1996-08-27
5512325 Non-slumping, pumpable castable and method of applying the same Gustav O. Hughes 1996-04-30
5340782 Vitreous silica-based plastic refractory 1994-08-23
5318932 Silicon carbide refractory composition and products 1994-06-07
5214006 Cement-free silicon carbide monoliths 1993-05-25