HA

Howard L. Acla

GP Gte Products: 11 patents #57 of 928Top 7%
GL Gte Sylvania Limited: 1 patents #17 of 98Top 20%
📍 Towanda, PA: #21 of 182 inventorsTop 15%
🗺 Pennsylvania: #6,628 of 74,527 inventorsTop 9%
Overall (All Time): #430,058 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
4710368 High purity high surface area alpha crystalline silicon nitride Joseph E. Ritsko 1987-12-01
4695439 Yttrium oxide stabilized zirconium oxide Joseph E. Ritsko, David L. Houck 1987-09-22
4626422 High purity high surface area silicon nitride Joseph E. Ritsko 1986-12-02
4578251 Removal of chromium from cobalt Joseph E. Ritsko 1986-03-25
4537750 Process for producing high purity tantalum oxide Joseph E. Ritsko 1985-08-27
4495158 Process for the recovery of tantalum values Joseph E. Ritsko 1985-01-22
4490340 Process for the recovery of high purity tantalum oxide Joseph E. Ritsko 1984-12-25
4482526 Recovery of tungsten and molybdenum from sulfur-bearing material Joseph E. Ritsko 1984-11-13
4255397 Process for removing tungsten from cemented tungsten carbide Brice E. Martin, Joseph E. Ritsko 1981-03-10
4233063 Process for producing cobalt powder Joseph E. Ritsko, John J. Culkin, Martin B. MacInnis 1980-11-11
4214894 Method for producing cobalt metal powder Joseph E. Ritsko, Richard G. W. Gingerich 1980-07-29
4184868 Method for producing extra fine cobalt metal powder Joseph E. Ritsko, Clarence D. Vanderpool, William Scheithauer, Jr., Geoffrey L. Harris 1980-01-22