Patents by Inventor John Lee Dawkins
John Lee Dawkins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10787403Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: December 5, 2019Date of Patent: September 29, 2020Assignee: Occidental Chemical CorporationInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
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Publication number: 20200109097Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: ApplicationFiled: December 5, 2019Publication date: April 9, 2020Inventors: Richard L. WILSON, Rodney L. KLAUSMEYER, John Lee DAWKINS, Daniel D. ROHRBACK, James S. STRATHE, Lloyd B. BRANAM
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Patent number: 10526261Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: May 16, 2018Date of Patent: January 7, 2020Assignee: Occidental Chemical CorporationInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
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Patent number: 10207970Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: GrantFiled: March 3, 2017Date of Patent: February 19, 2019Assignee: Occidental Chemical CorporationInventors: John Lee Dawkins, Darrell G Hollis, Rodney L Klausmeyer, Keith S Kramer, Michael A Garmon
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Publication number: 20180265438Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: ApplicationFiled: May 16, 2018Publication date: September 20, 2018Inventors: Richard L. WILSON, Rodney L. KLAUSMEYER, John Lee DAWKINS, Daniel D. ROHRBACK, James S. STRATHE, Lloyd B. BRANAM
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Patent number: 9981892Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: April 21, 2017Date of Patent: May 29, 2018Assignee: OCCIDENTAL CHEMICAL CORPORATIONInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
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Publication number: 20170226033Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: ApplicationFiled: April 21, 2017Publication date: August 10, 2017Inventors: Richard L. WILSON, Rodney L. KLAUSMEYER, John Lee DAWKINS, Daniel D. ROHRBACK, James S. STRATHE, Lloyd B. BRANAM
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Publication number: 20170174590Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: ApplicationFiled: March 3, 2017Publication date: June 22, 2017Applicant: OCCIDENTAL CHEMICAL CORPORATIONInventors: John Lee DAWKINS, Darrell G HOLLIS, Rodney L KLAUSMEYER, Keith S KRAMER, Michael A GARMON
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Patent number: 9650319Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: August 17, 2015Date of Patent: May 16, 2017Assignee: OCCIDENTAL CHEMICAL CORPORATIONInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
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Patent number: 9598337Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: GrantFiled: February 12, 2014Date of Patent: March 21, 2017Assignee: OCCIDENTAL CHEMICAL CORPORATIONInventors: John Lee Dawkins, Darrell Gene Hollis, Rodney L. Klausmeyer, Keith S. Kramer, Michael Andrew Garmon
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Patent number: 9586877Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: GrantFiled: June 4, 2015Date of Patent: March 7, 2017Assignee: OCCIDENTAL CHEMICAL CORPORATIONInventors: John Lee Dawkins, Darrell Gene Hollis, Rodney L. Klausmeyer, Keith S. Kramer, Michael Andrew Garmon
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Publication number: 20150376094Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: ApplicationFiled: February 12, 2014Publication date: December 31, 2015Inventors: John Lee DAWKINS, Darrell Gene HOLLIS, Rodney L. KLAUSMEYER, Keith S. KRAMER, Michael Andrew GARMON
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Publication number: 20150353451Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: ApplicationFiled: August 17, 2015Publication date: December 10, 2015Inventors: Richard L. WILSON, Rodney L. KLAUSMEYER, John Lee DAWKINS, Daniel D. ROHRBACK, James S. STRATHE, Lloyd B. BRANAM
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Publication number: 20150266799Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: ApplicationFiled: June 4, 2015Publication date: September 24, 2015Inventors: John Lee DAWKINS, Darrell Gene HOLLIS, Rodney L. KLAUSMEYER, Keith S. KRAMER, Michael Andrew GARMON
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Patent number: 9139495Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: November 26, 2014Date of Patent: September 22, 2015Assignee: Occidental Chemical CorporationInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
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Patent number: 9067858Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.Type: GrantFiled: March 14, 2013Date of Patent: June 30, 2015Assignee: Occidental Chemical CorporationInventors: John Lee Dawkins, Darrell Gene Hollis, Rodney L. Klausmeyer, Keith S. Kramer, Michael Andrew Garmon
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Publication number: 20150087870Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: ApplicationFiled: November 26, 2014Publication date: March 26, 2015Inventors: Richard L. WILSON, Rodney L. KLAUSMEYER, John Lee DAWKINS, Daniel D. ROHRBACK, James S. STRATHE, Lloyd B. BRANAM
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Patent number: 8912372Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: November 15, 2013Date of Patent: December 16, 2014Assignee: Occidental Chemical CorporationInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
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Publication number: 20140081056Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: ApplicationFiled: November 15, 2013Publication date: March 20, 2014Applicant: OCCIDENTAL CHEMICAL CORPORATIONInventors: Richard L. WILSON, Rodney L. KLAUSMEYER, John Lee DAWKINS, Daniel D. ROHRBACK, James S. STRATHE, Lloyd B. BRANAM
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Patent number: 8614363Abstract: Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.Type: GrantFiled: August 17, 2012Date of Patent: December 24, 2013Assignee: Occidental Chemical CorporationInventors: Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam