Patents by Inventor Derek Redmore
Derek Redmore 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: 5112496Abstract: A method for inhibiting oilfield scale formation including calcite in a high brine environment comprises introducing an effective amount of a scale inhibiting composition to a high brine environment susceptible to calcite scale formation. The environment has a total dissolved solids content of at least about 150 g/l, and the scale inhibiting composition comprises an aminomethylene posphonate of the formula ##STR1## wherein x is 2 or 3, each Z is independently selected from among H and CH.sub.3, and R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from among hydrogen and --CH.sub.2 PO.sub.3 M.sub.2 wherein the M's are independently selected from among the hydrogen and cations associated with Lewis bases, such that at least about 80% of the R.sup.1, R.sup.2, R.sup.3, and R.sup.4 in the composition is --CH.sub.2 PO.sub.3 M.sub.2.Type: GrantFiled: March 5, 1991Date of Patent: May 12, 1992Assignee: Petrolite CorporationInventors: Balram Dhawan, Derek Redmore, John L. Przybylinski
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Patent number: 4981609Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: November 25, 1988Date of Patent: January 1, 1991Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4931189Abstract: A method for preparation of an aminomethylene phosphonate useful as a scale inhibitor in high brine environments. The method comprises phosphonomethylating an amine of the formula ##STR1## wherein x is an integer from 1 to 6 and the Z's are selected from the group consisting of hydrogen and --CH.sub.3, to produce an aminomethylene phosphonate of the formula ##STR2## wherein x and the Z's are defined as above and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are indepenedently selected from the group consisting of hydrogen and --CH.sub.2 PO.sub.3 H.sub.2, such that at least about 80% of the R.sup.1, R.sup.2, R.sup.3 and R.sup.4 in a mixture of the aminomethylene phosphonate is --CH.sub.2 PO.sub.3 H.sub.2. Related methods and compositions are also disclosed.Type: GrantFiled: June 15, 1989Date of Patent: June 5, 1990Assignee: Petrolite CorporationInventors: Balram Dhawan, Derek Redmore, John L. Przybylinski
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Patent number: 4857205Abstract: A method for inhibition of scale formation using a composition comprising an N-phosphonomethylated amino-2-hydroxypropylene polymer having a molecular weight of between about 300 and about 5000 and having the structural formula ##STR1## wherein (i) R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, phosphonomethyl radical corresponding to the formula --CH.sub.2 PO(OH).sub.2, and water treating acceptable salts of such phosphonomethyl radical, with the proviso that the percentage of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.Type: GrantFiled: February 22, 1988Date of Patent: August 15, 1989Assignee: Petrolite CorporationInventors: Derek Redmore, Balram Dhawan, John L. Przybylinski
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Patent number: 4843176Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: October 25, 1985Date of Patent: June 27, 1989Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4751051Abstract: The uses of .alpha.-aminoalkyl sulfur compositions and to the preparation thereof, particularly as corrosion inhibitors. These compositions contain a moiety of the general formula ##STR1## in a linear or cyclic configuration.Type: GrantFiled: May 18, 1984Date of Patent: June 14, 1988Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. O. Alink
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Patent number: 4684507Abstract: A process for inhibiting the corrosion of ferrous metals in aqueous acidic or briny media comprising the step of adding a composition of the formula ##STR1## where R.sub.1 is a hydrocarbon group, O is a pyridine or substituted pyridine, and X is an anion.Type: GrantFiled: October 29, 1982Date of Patent: August 4, 1987Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4671815Abstract: This invention relates to salts of oxyalkylated amino compounds which render normally water insoluble components such as biocides, soluble in water and thereby improving their usefulness and effectiveness. These amino compounds render biocides such as methylene bis(thiocyanate) (MBT) and/or bis(trichloromethyl) sulfone (BTMS) water soluble. The soluble forms of these biocides afford more predictable, consistent and effective biocidal results when applied to systems contaminated with microorganisms such as bacteria, fungi, algae, molds, and certain yeasts and thus offer considerable advantages over insoluble, dispersible, emulsified forms of these biocides.Type: GrantFiled: September 13, 1979Date of Patent: June 9, 1987Assignee: Petrolite CorporationInventors: Thomas J. Bellos, Derek Redmore
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Patent number: 4633019Abstract: This invention relates to .alpha.-aminoalkylsulfur compositions and to the preparation and uses thereof, particularly as corrosion inhibitors. These compositions contain a moiety of the general formula ##STR1## in a linear or cyclic configuration.Type: GrantFiled: May 18, 1984Date of Patent: December 30, 1986Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. O. Alink
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Patent number: 4622404Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: November 10, 1981Date of Patent: November 11, 1986Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4616085Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: November 24, 1982Date of Patent: October 7, 1986Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4579956Abstract: Amino-phosphonates are prepared by reacting an enamine with a phosphite ester, for example, according to the equation ##STR1## where OR' is an alcohol moiety and NR.sub.2 is an amino moiety, both R and R' being preferably hydrocarbon such as alkyl or R.sub.2 is part of a ring structure. These compounds have many uses, for example, as corrosion inhibitors, scale inhibitors, fuel stabilizers, etc. In addition, amino-phosphonates can be converted to alpha, beta - unsaturated phosphonates according to the equation ##STR2## which are useful in forming flame retardant polymers and copolymers.Type: GrantFiled: October 20, 1978Date of Patent: April 1, 1986Assignee: Petrolite CorporationInventor: Derek Redmore
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Patent number: 4539404Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: November 24, 1982Date of Patent: September 3, 1985Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4450137Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: October 29, 1982Date of Patent: May 22, 1984Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4450138Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: October 29, 1982Date of Patent: May 22, 1984Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
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Patent number: 4443609Abstract: This invention relates to tetrahydrothiazole phosphonic acids or phosphonates and to the preparation thereof by reacting dihydrothiazoles with phosphorous acid or esters thereof.Type: GrantFiled: May 19, 1980Date of Patent: April 17, 1984Assignee: Petrolite CorporationInventors: Bernardus A. Oude Alink, Derek Redmore
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Patent number: 4442286Abstract: This invention relates to the preparation of amines by the reduction of imines with phosphorous acid, preferably under basic conditions.Type: GrantFiled: October 15, 1976Date of Patent: April 10, 1984Assignee: Petrolite CorporationInventor: Derek Redmore
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Patent number: 4420399Abstract: This invention relates to quaternary aminomethyl phosphonates and uses thereof for example as scale inhibitors, corrosion inhibitors, chelating agents, etc.Type: GrantFiled: May 28, 1982Date of Patent: December 13, 1983Assignee: Petrolite CorporationInventor: Derek Redmore
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Patent number: 4409151Abstract: This invention relates to a process of preparing N,N'-disubstituted methylene phosphonic acids by reacting .alpha.,.omega.-alkylene diamines with essentially 2 equivalents of formaldehyde and phosphorus acid based on replaced nitrogen-bonded hydrogens.This invention also relates to compositions formed by the process and to the uses for these compositions such as for inhibiting scale, etc.Type: GrantFiled: December 28, 1981Date of Patent: October 11, 1983Assignee: Petrolite CorporationInventors: Derek Redmore, William S. Paley
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Patent number: 4393026Abstract: This invention relates to the following:(a) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.Type: GrantFiled: November 10, 1981Date of Patent: July 12, 1983Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw