Patents by Inventor Randall Wayne Stephens

Randall Wayne Stephens 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).

  • Chemical markers
    Patent number: 8252594
    Abstract: A composition containing a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, and an organic marker compound.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: August 28, 2012
    Assignee: Rohm and Haas Company
    Inventors: Rajiv Manohar Banavali, Randall Wayne Stephens
  • Solid microbicidal composition
    Patent number: 8197836
    Abstract: A solid microbicidal composition containing a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, magnesium sulfate, a metal nitrate, magnesium chloride, and water.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Rohm and Haas Company
    Inventors: Beverly Jean El A'mma, Randall Wayne Stephens
  • CHEMICAL MARKERS
    Publication number: 20110056121
    Abstract: A composition containing a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, and an organic marker compound.
    Type: Application
    Filed: November 15, 2010
    Publication date: March 10, 2011
    Inventors: RAJIV MANOHAR BANAVALI, Randall Wayne Stephens
  • MICROBICIDAL COMPOSITION
    Publication number: 20110003871
    Abstract: A solid microbicidal composition containing a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, magnesium sulfate, a metal nitrate, magnesium chloride, and water.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 6, 2011
    Inventors: Beverly Jean El A'mma, Randall Wayne Stephens
  • Chemical markers
    Patent number: 7858373
    Abstract: A method for marking a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, by adding an organic marker compound.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: December 28, 2010
    Assignee: Rohm and Haas Company
    Inventors: Rajiv Manohar Banavali, Randall Wayne Stephens
  • Preparation of MBH
    Patent number: 7563934
    Abstract: A method for producing MnB12H12, wherein M is a metal or ammonium cation and n is one or two, by combining a metal borohydride and XBH3; wherein X is a substituted amine; a substituted phosphine; or tetrahydrofuran.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: July 21, 2009
    Assignee: Rohn and Haas Company
    Inventors: Rajiv Manohar Banavali, Randall Wayne Stephens, John Hiroshi Yamamoto
  • Preparation of MnB12H12
    Publication number: 20090118526
    Abstract: A method for producing MnB12H12, wherein M is a metal or ammonium cation and n is one or two, by combining a metal borohydride and XBH3; wherein X is a substituted amine; a substituted phosphine; or tetrahydrofuran.
    Type: Application
    Filed: November 3, 2008
    Publication date: May 7, 2009
    Inventors: Rajiv Manohar Banavali, Randall Wayne Stephens, John Hiroshi Yamamoto
  • Chemical markers
    Publication number: 20070184555
    Abstract: A composition containing a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, and an organic marker compound.
    Type: Application
    Filed: January 22, 2007
    Publication date: August 9, 2007
    Inventors: Rajiv Manohar Banavali, Randall Wayne Stephens
  • Continuous process for the preparation of encapsulated cyclopropenes
    Patent number: 6953540
    Abstract: The present invention relates to a continuous method to prepare encapsulated cyclopropenes, a method to purify cyclopropene gas, and a method to prepare an ?-cyclodextrin/cyclopropene complex.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 11, 2005
    Assignee: Rohm and Haas Company
    Inventors: Joshua Anthony Chong, Vincent John Farozic, Richard Martin Jacobson, Bret Alan Snyder, Randall Wayne Stephens, David Wayne Mosley
  • Method for marking hydrocarbons with anthraquinone imines
    Publication number: 20040102340
    Abstract: A method for invisibly marking a liquid petroleum hydrocarbon.
    Type: Application
    Filed: November 4, 2003
    Publication date: May 27, 2004
    Inventors: Kim Sang Ho, Randall Wayne Stephens
  • Continuous process for the preparation of encapsulated cyclopropenes
    Publication number: 20020043730
    Abstract: The present invention relates to a continuous method to prepare encapsulated cyclopropenes, a method to purify cyclopropene gas, and a method to prepare an &agr;-cyclodextrin/cyclopropene complex.
    Type: Application
    Filed: September 12, 2001
    Publication date: April 18, 2002
    Inventors: Joshua Anthony Chong, Vincent John Farozic, Richard Martin Jacobson, Bret Alan Snyder, Randall Wayne Stephens, David Wayne Mosley
  • Process for substituted 3-hydroxybutyrate esters
    Patent number: 6307094
    Abstract: The present invention provides a solventless process for the catalytic hydrogenation of esters of 4,4,4-trihaloacetoacetic acid using a platinum catalyst in the presence of an acid or base co-catalyst to provide the analagous 3-hydroxybutyrate ester. Such 3-hydroxybutyrate esters are useful as solvents, cleaners or fine chemical intermediates.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: October 23, 2001
    Inventors: Joshua Anthony Chong, Fereydon Abdesaken, Lori Ann Spangler, Renee Caroline Roemmele, Randall Wayne Stephens, Peter David Nightingale, David John Hartley
  • Method to prepare dihydrothiazoles
    Patent number: 6063929
    Abstract: The present invention relates to a method to prepare 2-pyridyl substituted dihydrothiazoles.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: May 16, 2000
    Assignee: Rohm and Haas Company
    Inventors: Kathleen Anne Kas, Aaron Sarafinas, Randall Wayne Stephens
  • Process to chloroketones using oxazolines
    Patent number: 5977368
    Abstract: This invention relates to a process for the preparation of an .alpha.-chloroketone compound comprising the steps of(i) cyclizing an alkynyl amide to form a 5-methyleneoxazoline ##STR1## (ii) chlorinating the 5-methyleneoxazoline using trichloroisocyanuric acid to produce a chlorinated oxazoline intermediate ##STR2## and (iii) hydrolyzing the chlorinated oxazoline intermediate with an aqueous acid to produce the desired monochloroketone ##STR3## wherein Z is alkyl or substituted alkyl, aryl or substituted aryl, heteroaryl or substituted heteroaryl or phenylene,R is a hydrogen atom or alkyl, andR.sup.1 and R.sup.2 are each independently an alkyl or substituted alkyl group, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form a cyclic structure.Additionally, when R is a hydrogen atom, a dichloroketone can be conveniently formed through adjustment of reaction conditions.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: November 2, 1999
    Assignee: Rohm and Haas Company
    Inventors: Heather Lynnette Rayle, Renee Caroline Roemmele, Randall Wayne Stephens
  • Process for the manufacture of acetonylbenzamides
    Patent number: 5969200
    Abstract: Novel routes for the preparation of acetonylbenzamides are provided by the reaction of an amine and acyl chloride. Novel routes to various intermediates used in the manufacture of acetonylbenzamides are also disclosed.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 19, 1999
    Assignee: Rohm and Haas Company
    Inventors: Enrique Luis Michelotti, Heather Lynnette Rayle, Randall Wayne Stephens, William Joseph Zabrodski
  • Process to chloroketones using oxazolines
    Patent number: 5959114
    Abstract: This invention relates to a process for the preparation of an .alpha.-chloroketone compound comprising the steps of(i) cyclizing an alkynyl amide to form a 5-methyleneoxazoline ##STR1## (ii) chlorinating the 5-methyleneoxazoline using trichloroisocyanuric acid to produce a chlorinated oxazoline intermediate ##STR2## and (iii) hydrolyzing the chlorinated oxazoline intermediate with an aqueous acid to produce the desired monochloroketone ##STR3## wherein Z is alkyl or substituted alkyl, aryl or substituted aryl, heteroaryl or substituted heteroaryl or phenylene,R is a hydrogen atom or alkyl, andR.sup.1 and R.sup.2 are each independently an alkyl or substituted alkyl group, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form a cyclic structure.Additionally, when R is a hydrogen atom, a dichloroketone can be conveniently formed through adjustment of reaction conditions.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: September 28, 1999
    Assignee: Rohm and Haas Company
    Inventors: Heather Lynnette Rayle, Renee Caroline Roemmele, Randall Wayne Stephens
  • Process for the manufacture of acetonylbenzamides
    Patent number: 5945565
    Abstract: Novel routes for the preparation of acetonylbenzamides are provided by the reaction of an amine and acyl chloride. Novel routes to various intermediates used in the manufacture of acetonylbenzamides are also disclosed.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: August 31, 1999
    Assignee: Rohm and Haas Company
    Inventors: Enrique Luis Michelotti, Heather Lynnette Rayle, Randall Wayne Stephens, William Joseph Zabrodski
  • Process to chloroketones using oxazolines
    Patent number: 5942621
    Abstract: This invention relates to a process for the preparation of an .alpha.-chloroketone compound comprising the steps of(i) cyclizing an alkynyl amide to form a 5-methyleneoxazoline ##STR1## (ii) chlorinating the 5-methyleneoxazoline using trichloroisocyanuric acid to produce a chlorinated oxazoline intermediate ##STR2## and (iii) hydrolyzing the chlorinated oxazoline intermediate with an aqueous acid to produce the desired monochloroketone ##STR3## wherein Z is alkyl or substituted alkyl, aryl or substituted aryl, heteroaryl or substituted heteroaryl or phenylene,R is a hydrogen atom or alkyl, andR.sup.1 and R.sup.2 are each independently an alkyl or substituted alkyl group, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form a cyclic structure.Additionally, when R is a hydrogen atom, a dichloroketone can be conveniently formed through adjustment of reaction conditions.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: August 24, 1999
    Assignee: Rohm and Haas Company
    Inventors: Heather Lynnette Rayle, Renee Caroline Roemmele, Randall Wayne Stephens
  • Process to chloroketones using oxazolines
    Patent number: 5936096
    Abstract: This invention relates to a process for the preparation of an .alpha.-chloroketone compound comprising the steps of(i) cyclizing an alkynyl amide to form a 5-methyleneoxazoline ##STR1## (ii) chlorinating the 5-methyleneoxazoline using trichloroisocyanuric acid to produce a chlorinated oxazoline intermediate ##STR2## and (iii) hydrolyzing the chlorinated oxazoline intermediate with an aqueous acid to produce the desired monochloroketone ##STR3## wherein Z is alkyl or substituted alkyl, aryl or substituted aryl, heteroaryl or substituted heteroaryl or phenylene,R is a hydrogen atom or alkyl, andR.sup.1 and R.sup.2 are each independently an alkyl or substituted alkyl group, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form a cyclic structure.Additionally, when R is a hydrogen atom, a dichloroketone can be conveniently formed through adjustment of reaction conditions.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: August 10, 1999
    Assignee: Rohm and Haas Company
    Inventors: Heather Lynnette Rayle, Renee Caroline Roemmele, Randall Wayne Stephens
  • Process to chloroketones using oxazolines
    Patent number: 5932738
    Abstract: This invention relates to a process for the preparation of an .alpha.-chloroketone compound comprising the steps of(i) cyclizing an alkynyl amide to form a 5-methyleneoxazoline ##STR1## (ii) chlorinating the 5-methyleneoxazoline using trichloroisocyanuric acid to produce a chlorinated oxazoline intermediate ##STR2## and (iii) hydrolyzing the chlorinated oxazoline intermediate with an aqueous acid to produce the desired monochloroketone ##STR3## wherein Z is alkyl or substituted alkyl, aryl or substituted aryl, heteroaryl or substituted heteroaryl or phenylene,R is a hydrogen atom or alkyl andR.sup.1 and R.sup.2 are each independently an alkyl or substituted alkyl group, or R.sup.1 and R.sup.2 together with the carbon atom to which they are attached form a cyclic structure.Additionally, when R is a hydrogen atom, a dichloroketone can be conveniently formed through adjustment of reaction conditions.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: August 3, 1999
    Assignee: Rohm and Haas Company
    Inventors: Heather Lynnette Rayle, Renee Caroline Roemmele, Randall Wayne Stephens