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Peter Gideon Gelblum, Velliyur Nott Mallikarjuna Rao, Charles Joseph Noelke, Norman Herron: Disposal of fluoroform (HFC-23). E I du Pont de Nemours and Company, October 19, 2004: US06806396 (12 worldwide citation)

The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF


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Peter Gideon Gelblum, Norman Herron, Charles Joseph Noelke, Velliyur Nott Mallikarjuna Rao: Synthesis of perfluoroolefins. E I du Pont de Nemours and Company, September 18, 2007: US07271301

A gold-lined pyrolysis reactor is used to pyrolyze compounds to form fluoroolefins like tetrafluoroethylene and hexafluoropropylene in high yield, with minimum to no formation of perfluoroisobutylene, chlorotrifluoroethylene, coke, salts, or polymer.


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Thomas R Keane, Tiberiu M Leib, William H Manogue, Peter Gideon Gelblum: Hydrofluorocarbon production using heat carriers in high temperature hydrogenolysis. E I du Pont de Nemours and Company, November 24, 1998: US05841008

This invention relates to a process for the hydrogenolysis of halogenated hydrocarbons containing fluorine together with chlorine and/or bromine.


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Peter Gideon Gelblum, John J Barnes, Ioannis V Bletsos, Norman Herron, Tae Hoon Kim: Process for the nondestructive heating and supply of hot ammonia or hot ammonia containing feed gas. E I du Pont de Nemours and Company, May 29, 2001: US06238634

A process for nondestructive heating and supplying of ammonia feed gas wherein high quality ammonia (typically greater than 90% and as high as 99%) is preserved at temperatures well in excess of the conventional limit of 230° C. (typically from 400 to 700° C.) by controlling the selection of metal s ...


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Peter Gideon Gelblum, Velliyur Nott Mallikarjuna Rao, Charles Joseph Noelke, Norman Herron: Disposal of fluoroform (HFC-23). E I Du Pont de Nemours And Company, Legal Patent Records Center, September 4, 2003: US20030166981-A1

The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF3CHF2 and CF3CHFCF3, respectively.


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Peter Gideon Gelblum, Norman Herron, Charles Joseph Noelke, Velliyur Nott Mallikarjuna Rao: Synthesis of perfluoroolefins. E I Du Pont de Nemours And Company, Legal Department Patents, March 14, 2002: US20020032356-A1

A gold-lined pyrolysis reactor is used to pyrolyze compounds to form fluoroolefins like tetrafluoroethylene and hexafluoropropylene in high yield, with minimum to no formation of perfluoroisobutylene, chlorotrifluoroethylene, coke, salts, or polymer.