RH

Robert B. Heithoff

PI Ppg Industries: 12 patents #70 of 1,216Top 6%
PO Ppg Industries Ohio: 5 patents #264 of 1,316Top 25%
Overall (All Time): #277,843 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8455066 Low solar absorbing blue glass, solar reflecting coated blue glass, and insulating unit having a low solar heat gain Glenn T. Miner 2013-06-04
8268741 Low solar absorbing blue glass, solar reflecting coated blue glass, and insulating unit having a low solar heat gain Glenn T. Miner 2012-09-18
7691763 High performance blue glass Mehran Arbab, Larry J. Shelestak, Dennis Smith 2010-04-06
6962887 Transparent glass having blue edge color 2005-11-08
6413893 Green privacy glass Larry J. Shelestak, Andrew Calabrese, John F. Krumwiede, Anthony V. Longobardo 2002-07-02
5792559 Composite transparency Larry J. Shelestak 1998-08-11
5393593 Dark gray, infrared absorbing glass composition and coated glass for privacy glazing Joseph A. Gulotta, John F. Krumwiede, Luke A. Kutilek, Anthony V. Longobardo 1995-02-28
5030593 Lightly tinted glass compatible with wood tones 1991-07-09
5030594 Highly transparent, edge colored glass 1991-07-09
5023210 Neutral gray, low transmittance, nickel-free glass John F. Krumwiede, Paul W. Kopp 1991-06-11
4886539 Method of vacuum refining of glassy materials with selenium foaming agent Richard L. Gerutti, David R. Haskins, Ronald L. Schwenninger, Wright M. Welton 1989-12-12
4836775 Air cooled rotary kiln collar John K. Groetzinger 1989-06-06
4707175 Method of preheating pulverulent batch material John K. Groetzinger 1987-11-17
4696691 Method of glass batch preheating and liquefying with recycling of particulates Robert A. Lawhon, Wayne H. Gonzalez 1987-09-29
4521238 Method and apparatus for controlling an ablation liquefaction process 1985-06-04
4521235 Method and apparatus for controlling wall layer thickness in a liquefaction process 1985-06-04
4496387 Transition between batch preheating and liquefying stages apparatus John K. Groetzinger, Ronald L. Schwenninger 1985-01-29