Inventor · disambiguated record
Robert B. Heithoff
Also filed as: HEITHOFF ROBERT B
19 granted patents·1 pending application·1,232 citations·filing 1976–2012
96Inventor score
Top patents by PatentIndex Score
20 records- 0198US5393593ADark gray, infrared absorbing glass composition and coated glass for privacy glazingPPG INDUSTRIES INC·Filed 1993·Granted Feb 28, 1995·310 cites·47 claims
- 0298US5030593ALightly tinted glass compatible with wood tonesPPG INDUSTRIES INC·Filed 1990·Granted Jul 9, 1991·222 cites·7 claims
- 0398US5030594AHighly transparent, edge colored glassPPG INDUSTRIES INC·Filed 1990·Granted Jul 9, 1991·255 cites·16 claims
- 0496US4886539AMethod of vacuum refining of glassy materials with selenium foaming agentPPG INDUSTRIES INC·Filed 1989·Granted Dec 12, 1989·76 cites·16 claims
- 0593US5023210ANeutral gray, low transmittance, nickel-free glassPPG INDUSTRIES INC·Filed 1989·Granted Jun 11, 1991·112 cites·11 claims
- 0692US7691763B2High performance blue glassPPG IND OHIO INC·Filed 2007·Granted Apr 6, 2010·18 cites·13 claims
- 0787US6962887B2Transparent glass having blue edge colorPPG IND OHIO INC·Filed 2003·Granted Nov 8, 2005·30 cites·32 claims
- 0887US5792559AComposite transparencyPPG INDUSTRIES INC·Filed 1994·Granted Aug 11, 1998·67 cites·39 claims
- 0986US8455066B2Low solar absorbing blue glass, solar reflecting coated blue glass, and insulating unit having a low solar heat gainHEITHOFF ROBERT B·Filed 2012·Granted Jun 4, 2013·12 cites·20 claims
- 1078US8268741B2Low solar absorbing blue glass, solar reflecting coated blue glass, and insulating unit having a low solar heat gainHEITHOFF ROBERT B·Filed 2007·Granted Sep 18, 2012·8 cites·28 claims
- 1178US6413893B1Green privacy glassPPG IND OHIO INC·Filed 1999·Granted Jul 2, 2002·45 cites·52 claims
- 1277US4047918AWater cooled glass stirrerPPG INDUSTRIES INC·Filed 1976·Granted Sep 13, 1977·22 cites·7 claims
- 1363US4836775AAir cooled rotary kiln collarPPG INDUSTRIES INC·Filed 1988·Granted Jun 6, 1989·15 cites·5 claims
- 1463US4055407AApparatus for the manufacture of flat glass having a glass refractory delivery piece and method of installationPPG INDUSTRIES INC·Filed 1976·Granted Oct 25, 1977·13 cites·12 claims
- 1560US4496387ATransition between batch preheating and liquefying stages apparatusPPG INDUSTRIES INC·Filed 1983·Granted Jan 29, 1985·13 cites·9 claims
- 1647US4521238AMethod and apparatus for controlling an ablation liquefaction processPPG INDUSTRIES INC·Filed 1983·Granted Jun 4, 1985·7 cites·24 claims
- 1747US2005170944A1High performance blue glassFiled 2004·Application pending·0 cites
- 1833US4707175AMethod of preheating pulverulent batch materialPPG INDUSTRIES INC·Filed 1985·Granted Nov 17, 1987·3 cites·13 claims
- 1933US4696691AMethod of glass batch preheating and liquefying with recycling of particulatesPPG INDUSTRIES INC·Filed 1986·Granted Sep 29, 1987·4 cites·19 claims
- 2030US4521235AMethod and apparatus for controlling wall layer thickness in a liquefaction processPPG INDUSTRIES INC·Filed 1983·Granted Jun 4, 1985·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →