HB

Herbert W. Barch

PI Ppg Industries: 13 patents #60 of 1,216Top 5%
Overall (All Time): #391,329 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4941904 Method and apparatus for forming hollow fibers William P. Marshall 1990-07-17
4933307 Silica-rich porous substrates with reduced tendencies for breaking or cracking William P. Marshall, Joseph J. Hammel, Roy D. Hegedus, Walter J. Robertson 1990-06-12
4842620 Process of gas enrichment with porous siliceous-containing material Joseph J. Hammel, Walter J. Robertson, William P. Marshall, Balbhadra Daas, Michael A. Smoot +1 more 1989-06-27
4690760 Novel cartridge with stress relieving member Michael A. Smoot, Balbhadra Das 1987-09-01
4689255 Mat structure Michael A. Smoot, Balbhadra Das 1987-08-25
4610789 Filtration cartridge and reactor 1986-09-09
4517916 Applicator for treating textile filaments with chemical treatments George T. Salego, Rudolph Blair 1985-05-21
4491082 Cylindrical sleeve applicator for use in manufacturing chemically treated filaments George T. Salego, William H. Retsch, Jr., Rudolph Blair 1985-01-01
4466151 Applicator for applying a coating to a surface Emil Martin, S. Thomas Greer 1984-08-21
4434521 Applicator for applying a coating to a surface Emil Martin, S. Thomas Greer 1984-03-06
4370157 Stable sizing compositions used during forming of glass fibers and resulting fiber Carl A. Melle, Donald E. McWilliams, Howard J. Hudson 1983-01-25
4305742 Method of forming and sizing glass fibers Howard J. Hudson, Jerry C. Hedden 1981-12-15
4239162 Fiber traversing spiral Rudolph Blair 1980-12-16